Name Chemistry-PAP. Notes: Periodic Table and Periodic Trends

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Name Chemistry-PAP. Notes: Periodic Table and Periodic Trends"

Transcription

1 Name Chemistry-PAP Period I. History Notes: Periodic Table and Periodic Trends Dmitri Mendeleev ( ) Russian professor Gathered a wealth of data on all chemical elements known at the time noticed similarities in properties when known elements were arranged in order of increasing atomic created first table in which he placed elements with similar properties into the same groups left spaces in table to allow for discovery of Inductive reasoning is the use of detailed facts to form a general principle or model (going from specific to general). How did Mendeleev use inductive reasoning? Deductive reasoning is the use of a general principle or model to draw specific inferences (going from general to specific). How did Mendeleev use deductive reasoning? Mendeleev placed the elements in order of atomic mass to create his table, but he was forced to break the order a few times to preserve the patterns he had discovered. Something was not quite right, but it would take further scientific discovery to shed light on the problem. Henry Moseley ( ) scientist working with Work using x-ray spectroscopy led to definition of atomic as the number of in the nucleus of the atom. Realized that Mendeleev s table is actually arranged by increasing atomic Was killed in action in WWI at the age of 27. Isaac Asimov once wrote, "In view of what he [Moseley] might still have accomplished... his death might well have been the most costly single death of the War to mankind generally." [ Periodic Law: the physical and chemical properties of the elements are functions of their atomic. 1

2 ** Use your Gallery Walk notes to help you fill in pp. 2-3! ** Modern Periodic Table the is an arrangement of elements in order of their atomic numbers so that elements with similar physical/chemical fall in the same column II. Elements of the Periodic Table the electron of an atom s energy level governs the atom s chemical properties 1. Organization horizontal rows are called vertical columns are called and correspond to the element s electron config 2. s-block elements groups and and the element Group 1 has configuration known as metals (except hydrogen, a nonmetal) color enough to cut with knife VERY! (most reactive metals on table) not found in nature (only in compounds) typically stored in oil to prevent with air and water Group 2 has configuration called metals harder,, stronger than alkalis also very, but not as much as alkali metals not found in nature 3. d- block elements Hard, silvery, solid (except Hg) metals that have a density also known as metals less than alkali and alkaline earth metals Examples of d-block elements: 2

3 4. p-block elements all elements of Groups except also known as elements (along with s-block) contains, nonmetals, and have properties of metals and non-metals Group 17 called most reactive strong and will burn Group 18 called Not chemically (inert) Have configuration All have 8 valence electrons except, which is still stable because it has a filled outer energy level. 5. f-block elements the and sublevels are being filled these elements have very unpredictable electron configurations Also known as the transition metals 6 th period f-block elements are called the series (rare earth elements) 7 th period f-block elements are called the series The actinides are all (unstable nuclei) Most actinides are also (do not occur in nature) Useful definitions: Metal: a substance that conducts heat and electricity, is shiny and reflects many colors of light, and can be hammered into sheets (malleable) or drawn into wire (ductile). Metals lose electrons to form cations (positive ions). All solid at room temperature except mercury. About 80% of the known elements are metals. Nonmetal: a substance that is a poor conductor of heat and electricity, is brittle or waxy or gaseous, and is not malleable or ductile. Nonmetals gain electrons to form anions (negative ions). About 20% of the known elements are metals. Metalloid: An element with some metallic and some nonmetallic properties. Semiconductors. They are boron, silicon, germanium, arsenic, antimony, tellurium, and polonium. 3

4 III. Periodic Trends Keep these 3 factors in mind when considering periodic trends: 1. Nuclear charge Whenever a is added to the nucleus, it creates a stronger pulling the in to the nucleus even more. Nuclear charge increases across a period Comparison of nuclear charge: (compare K to Br) 2. Shielding Effect When an is added to the atom (each new on the periodic table), you are adding a between the nucleus and the electrons. As energy levels are added, the atom becomes in radius. The pull of the for the electrons is decreased, because not only are there more, but the valence electrons are also now from the nucleus. It is easier to a valence electron as energy levels are added. Diagram of the shielding effect: (compare Li to K) 3. Octet Rule will lose, gain or share so they can achieve the electron configuration of the closest. As elements get to the noble gases on the periodic table (further to the ), the greater the attraction they have for electrons. Elements on the side of the periodic table want to lose electrons, so they will not have a great for electrons. 4

5 Trends in the Properties of the Elements A. Atomic Radius Atomic radius can be thought of as the distance from the center of the nucleus to the edge of the electron cloud, but it is officially defined as one-half the distance between of two like atoms in a molecule Ex: diagrams of H 2 and O 2 measured in picometers (pm), m or Angstroms (A), m atomic radius indicates relative or size of the atom 1. Group trend Atomic radius generally as you move down a group. This is mainly due to succeeding being filled. 2. Periodic trend Atomic radius generally as you move across a period from left to right. This is mainly due to increasing. B. Ionic Radius A positive ion is known as a. It is a metal atom that has electrons. A negative ion is known as an. It is a nonmetal atom that has electrons. Ex: Na and Na + F and F - 5

6 Positive ions are always smaller than the neutral metal atoms from which they were formed. When metal ions form, typically the outer energy level will be emptied, resulting in an overall smaller electron cloud. Also, the excess of protons compared to electrons draws the remaining electrons in closer. Ex. Which is larger, Na or Na+? Circle one. Negative ions are always larger than the neutral nonmetal atoms from which they were formed. There is more repulsion in the cloud due to the added electrons, therefore making it spread out, but there are no extra protons to pull it closer. Ex. Which is larger, F or F? Circle one. 1. Group trend Ionic radius (for both cations and anions) generally as you move down a group. This is mainly due to succeeding being filled. 2. Periodic trend Cation radius generally as you move across a period from left to right. This is mainly due to increasing. The same trend is observed for anions across a period, for the same reason. Note that overall, anions within one period are larger than the cations within one period. This is due to the fact that cations have lost an energy level. C. Ionization Energy Ionization energy is defined as the amount of energy required to remove an from a gaseous atom, producing a (a positively-charged ion). Na (g) kj Na + (g) + e - (energy) 1. Group Trend Ionization energy as you move down a group. This is mainly due to the. 2. Periodic trend Ionization energy as you move left to right across a period. This is mainly due to increasing and the octet rule. 6

7 The energy required to remove the first outermost electron is called the ionization energy. To remove the second outermost electron is called the ionization energy, and so on. Element First IE (kj/mol) Second IE (kj/mol) Third IE (kj/mol) Li Be F Ne Note the sharp increase for the second IE for Li and for the third IE for Be. Why? D. Electronegativity Electronegativity is defined as the tendency for atoms of an element to attract bonding when they are chemically combined with atoms of another element. Ex: H 2 O 1. Group trend Electronegativity as you move down a group. This is because the from the nucleus is. 2. Periodic Trend Electronegativity as you move left to right across a period. This is mainly due to increasing and the octet rule. 7

8 Electronegativities of the Elements Note: Noble gases have no electronegativity because they don t attract electrons at all. Think of the octet rule. IV. Summary of Periodic Trends With your teacher s help, summarize the trends on the periodic table using arrows and labels. 1 Group 1 2 Periodic Table

Unit 3.2: The Periodic Table and Periodic Trends Notes

Unit 3.2: The Periodic Table and Periodic Trends Notes Unit 3.2: The Periodic Table and Periodic Trends Notes The Organization of the Periodic Table Dmitri Mendeleev was the first to organize the elements by their periodic properties. In 1871 he arranged the

More information

Ch. 14 The Periodic Table p. 390-406

Ch. 14 The Periodic Table p. 390-406 Name Period PRE-AP 14-1 Development of the Periodic Table Ch. 14 The Periodic Table p. 390-406 Dmitri Mendeleev published the first periodic table in 1869. He organized the elements by atomic mass. He

More information

Chapter 5: The Periodic Law

Chapter 5: The Periodic Law Chapter 5: The Periodic Law Section 5.1: The History of the Periodic Table Dmitri Mendeleev (1869) first person to organize the elements in a chart Organized about 70 elements by increasing atomic mass

More information

Chapter 6 The Periodic Table

Chapter 6 The Periodic Table Chapter 6 The Periodic Table Organizing the Periodic Table In a grocery store, the products are grouped according to similar characteristics. With a logical classification system, finding and comparing

More information

Organizing the Elements

Organizing the Elements The Periodic Table Organizing the Elements A few elements, such as gold and copper, have been known for thousands of years - since ancient times Yet, only about 13 had been identified by the year 1700.

More information

Unit 2 Periodic Behavior and Ionic Bonding

Unit 2 Periodic Behavior and Ionic Bonding Unit 2 Periodic Behavior and Ionic Bonding 6.1 Organizing the Elements I. The Periodic Law A. The physical and chemical properties of the elements are periodic functions of their atomic numbers B. Elements

More information

Chapter 5. Chapter 5. Objectives. Table of Contents. Chapter 5. Chapter 5. Mendeleev and Chemical Periodicity

Chapter 5. Chapter 5. Objectives. Table of Contents. Chapter 5. Chapter 5. Mendeleev and Chemical Periodicity The Periodic Law of Contents and Periodic Properties Objectives Explain the roles of Mendeleev and Moseley in the development of the periodic table. Describe the modern periodic table. Explain how the

More information

Chapter 5, Section 5.1 History of the Periodic Table

Chapter 5, Section 5.1 History of the Periodic Table i) Objectives Chapter 5, Section 5.1 History of the Periodic Table ii) Mendeleev and Chemical Periodicity iii) Moseley and the Periodic Law i) The Modern Periodic Table Objectives i) Explain the roles

More information

Periodic Table Instructional Background Patterns in Element Properties (History): Elements vary widely in their properties, but in an orderly way.

Periodic Table Instructional Background Patterns in Element Properties (History): Elements vary widely in their properties, but in an orderly way. Periodic Table Instructional Background Patterns in Element Properties (History): Elements vary widely in their properties, but in an orderly way. In 1869, the Russian chemist Dmitri Mendeleev produced

More information

Horizontal Rows are called Periods. Elements in the same period have the same number of energy levels for ground state electron configurations.

Horizontal Rows are called Periods. Elements in the same period have the same number of energy levels for ground state electron configurations. The Periodic Table Horizontal Rows are called Periods. Elements in the same period have the same number of energy levels for ground state electron configurations. Vertical Rows are called Families or Groups.

More information

The Periodic Table of The Elements

The Periodic Table of The Elements The Periodic Table of The Elements Elements are like a collection As more and more elements were discovered it became more important to organize and classify them Between the late 1700 s and mid 1800 s

More information

Periodic Table & Periodic Trends I. Importance of Classification II. History & Development law of octaves III. Periodic Law

Periodic Table & Periodic Trends I. Importance of Classification II. History & Development law of octaves III. Periodic Law Periodic Table & Periodic Trends I. Importance of Classification A. Makes large sums of information manageable. B. In chemistry, it reduces the number of reactions that need to be studied. II. History

More information

Periodicity. The Periodic Table. Dmitri Mendeleev. and the Periodic Table. Periods. Metals vs. Non-Metals. Groups

Periodicity. The Periodic Table. Dmitri Mendeleev. and the Periodic Table. Periods. Metals vs. Non-Metals. Groups Periodicity and the Periodic Table the result Dmitri Mendeleev arranged elements in order of their atomic numbers, such that elements with similar properties fell into the same column or group. The Periodic

More information

Class Notes Standards Addressed: 8.3.11

Class Notes Standards Addressed: 8.3.11 Name: Period #: Class Notes Standards Addressed: 8.3.11 History of the Periodic Table: Demitri Mendeleev = Russian chemist who discovered a pattern to the in 1869. o How did he discovery a pattern to the

More information

Chapter 4. Section 1 How Are Elements Organized? Section 2 Tour of the Periodic Table. Section 3 Trends in the Periodic Table

Chapter 4. Section 1 How Are Elements Organized? Section 2 Tour of the Periodic Table. Section 3 Trends in the Periodic Table The Periodic Table Section 1 How Are Elements Organized? Section 2 Tour of the Periodic Table Section 3 Trends in the Periodic Table Section 4 Where Did the Elements Come From? Section 1 How Are Elements

More information

The Periodic Table. Name: Class: Date: ID: A. Multiple Choice Identify the choice that best completes the statement or answers the question:

The Periodic Table. Name: Class: Date: ID: A. Multiple Choice Identify the choice that best completes the statement or answers the question: Name: Class: Date:, ID: A The Periodic Table Multiple Choice Identify the choice that best completes the statement or answers the question: 1. What are the elements with atomic numbers from 58 to 71 called?

More information

Key: Periodic Table Blocks. s block p block d block f block

Key: Periodic Table Blocks. s block p block d block f block Name Chemistry / / Periodic Table Today you will learn about the organization of the elements of the periodic table into groups (or families) and periods and the properties of these groups. Groups (or

More information

Chapter 5 TEST: The Periodic Table name

Chapter 5 TEST: The Periodic Table name Chapter 5 TEST: The Periodic Table name HPS # date: Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The order of elements in the periodic table is based

More information

Mendeleev s s Periodic Table. Dmitri Mendeleev

Mendeleev s s Periodic Table. Dmitri Mendeleev The Periodic Table History Russian scientist Dmitri Mendeleev taught chemistry in terms of properties. Mid 1800 - molar masses of elements were known. Wrote down the elements in order of increasing mass.

More information

Unit 5 Elements and their Properties

Unit 5 Elements and their Properties Unit 5 Elements and their Properties 1. In 1871, Russian chemist Mendeleev created the forerunner of the modern periodic table. 2. The elements in Mendeleev's table were arranged in order of increasing

More information

Chapter 6 : The Periodic Table and Periodic Law. Section 1 Notes

Chapter 6 : The Periodic Table and Periodic Law. Section 1 Notes Chapter 6 : The Periodic Table and Periodic Law Section 1 Notes Section 6-1 Development of the Periodic Table In the 1700s, Lavoisier compiled a list of all the known elements of the time. Development

More information

SCPS Chemistry Worksheet Periodicity A. Periodic table 1. Which are metals? Circle your answers: C, Na, F, Cs, Ba, Ni

SCPS Chemistry Worksheet Periodicity A. Periodic table 1. Which are metals? Circle your answers: C, Na, F, Cs, Ba, Ni SCPS Chemistry Worksheet Periodicity A. Periodic table 1. Which are metals? Circle your answers: C, Na, F, Cs, Ba, Ni Which metal in the list above has the most metallic character? Explain. Cesium as the

More information

Chapter 7. Chemistry, The Central Science, 11th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten

Chapter 7. Chemistry, The Central Science, 11th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Chemistry, The Central Science, 11th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Chapter 7 John D. Bookstaver St. Charles Community College Cottleville, MO Development of Table

More information

Chemistry: The Periodic Table and Periodicity

Chemistry: The Periodic Table and Periodicity Chemistry: The Periodic Table and Periodicity Name: Hour: Date: Directions: Answer each of the following questions. You need not use complete sentences. 1. Who first published the classification of the

More information

Chemistry A: Periodic Table Packet Name: Hour: Page 1. Chemistry A Periodic Table

Chemistry A: Periodic Table Packet Name: Hour: Page 1. Chemistry A Periodic Table Chemistry A: Periodic Table Packet Name: Hour: Page 1 Chemistry A Periodic Table Chemistry A: Periodic Table Packet Name: Hour: Page 2 Worksheet #1: Periodic Table Inquiry Activity Directions: I know that

More information

Chemistry: The Periodic Table and Periodicity

Chemistry: The Periodic Table and Periodicity Chemistry: The Periodic Table and Periodicity Name: per: Date:. 1. By what property did Mendeleev arrange the elements? 2. By what property did Moseley suggest that the periodic table be arranged? 3. What

More information

The Periodic Table of Elements

The Periodic Table of Elements The Periodic Table of Elements (AKA THE MOST AWESOME THING EVER!) 1 2 The Development of the Periodic Table of Elements In 1869, Dmitri Mendeleev was studying the physical and chemical properties of the

More information

Key Idea questions > How did Mendeleev arrange the elements in his periodic table? > How are elements arranged in the modern periodic table?

Key Idea questions > How did Mendeleev arrange the elements in his periodic table? > How are elements arranged in the modern periodic table? CHAPTER OUTLINE Section 1 Organizing the Elements Key Idea questions > How did Mendeleev arrange the elements in his periodic table? > How are elements arranged in the modern periodic table? Recognizing

More information

Development of the Periodic Table

Development of the Periodic Table Father of the Periodic Table Dmitri Mendeleev put the elements in order by atomic mass. He noticed similar properties of atoms at regular intervals. His first periodic table was published in 869. Mendeleev

More information

The Periodic Table; Chapter 5: Section 1 - History of the Periodic Table Objectives: Explain the roles of Mendeleev and Moseley in the development of

The Periodic Table; Chapter 5: Section 1 - History of the Periodic Table Objectives: Explain the roles of Mendeleev and Moseley in the development of The Periodic Table; Chapter 5: Section 1 - History of the Periodic Table Objectives: Explain the roles of Mendeleev and Moseley in the development of the periodic table. Describe the modern periodic table.

More information

Periodic Table Study Guide

Periodic Table Study Guide Chemistry Periodic Table Name: Period: 1 2 3 4 5 6 7 8 Periodic Table Study Guide Directions: Please use this packet as practice and review. DO NOT try to answer these questions during presentations, take

More information

6. Each column of the periodic table is

6. Each column of the periodic table is 1. Atoms of elements that are in the same group have the same number of 5. Mendeleev left gaps in his periodic table because A. Protons B. Valence Electrons A. the table was too full B. no known elements

More information

Periodic Table of the Elements

Periodic Table of the Elements Periodic Table of the Elements Where did it come from? 1869 Demitri Mendeleev Russian chemist who discovered a pattern to the elements Wrote properties on cards Arranged cards according to properties

More information

Chapter 5 Periodic Table. Dmitri Mendeleev: Russian Chemist credited with the discovery of the periodic table.

Chapter 5 Periodic Table. Dmitri Mendeleev: Russian Chemist credited with the discovery of the periodic table. Chapter 5 Periodic Table Dmitri Mendeleev: Russian Chemist credited with the discovery of the periodic table. How did he organize the elements? According to similarities in their chemical and physical

More information

Trends of the Periodic Table Diary

Trends of the Periodic Table Diary Trends of the Periodic Table Diary Trends are patterns of behaviors that atoms on the periodic table of elements follow. Trends hold true most of the time, but there are exceptions, or blips, where the

More information

Worksheet 11 - Periodic Trends

Worksheet 11 - Periodic Trends Worksheet 11 - Periodic Trends A number of physical and chemical properties of elements can be predicted from their position in the Periodic Table. Among these properties are Ionization Energy, Electron

More information

Periodic Table Trends in Element Properties Ron Robertson

Periodic Table Trends in Element Properties Ron Robertson Periodic Table Trends in Element Properties Ron Robertson r2 n:\files\courses\1110-20\2010 possible slides for web\ch9trans2.doc The Periodic Table Quick Historical Review Mendeleev in 1850 put together

More information

6.5 Periodic Variations in Element Properties

6.5 Periodic Variations in Element Properties 324 Chapter 6 Electronic Structure and Periodic Properties of Elements 6.5 Periodic Variations in Element Properties By the end of this section, you will be able to: Describe and explain the observed trends

More information

Periodic Table and Periodic Trends

Periodic Table and Periodic Trends Periodic Table and Periodic Trends Periodic Table The first reasonably successful attempt to organize the elements was made by Dimitri Mendeleevin 1869. He had the idea of arranging elements in order of

More information

PERIODIC TABLE NOTES (from chapters 5 and 6)

PERIODIC TABLE NOTES (from chapters 5 and 6) PERIODIC TABLE NOTES (from chapters 5 and 6) I. History of the Periodic Table As the number of elements began to grow, chemists needed a way to all of these elements. [In the 1700 s there were known elements.

More information

Review- The Periodic Table

Review- The Periodic Table Review- The Periodic Table Name Date Block Matching: Match the description in with the correct term in. Write the letter in the blank provided. Each term matches with only one description, so be sure to

More information

The Periodic Table and Periodic Law

The Periodic Table and Periodic Law The Periodic Table and Periodic Law Section 6.1 Development of the Modern Periodic Table In your textbook, reads about the history of the periodic table s development. Use each of the terms below just

More information

Chapter Test. Teacher Notes and Answers 5 The Periodic Law TEST A 1. b 2. d 3. b 4. b 5. d 6. a 7. b 8. b 9. b 10. a 11. c 12. a.

Chapter Test. Teacher Notes and Answers 5 The Periodic Law TEST A 1. b 2. d 3. b 4. b 5. d 6. a 7. b 8. b 9. b 10. a 11. c 12. a. Assessment Chapter Test A Teacher Notes and Answers 5 The Periodic Law TEST A 1. b 2. d 3. b 4. b 5. d 6. a 7. b 8. b 9. b 10. a 11. c 12. a 13. c 14. d 15. c 16. b 17. d 18. a 19. d 20. c 21. d 22. a

More information

Periodic Table of Elements

Periodic Table of Elements Periodic Table of Elements Periodic Table: The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations (electron shell

More information

EXPERIMENT 4: Electron Configuration of elements

EXPERIMENT 4: Electron Configuration of elements Material: laboratory display of the elements and a wall periodic table is required. Objective: To learn the use of periodic table for writing electron configuration of elements. INTRODUCTION Basic building

More information

CHAPTER 6: THE PERIODIC TABLE

CHAPTER 6: THE PERIODIC TABLE CHAPTER 6: THE PERIODIC TABLE Problems to try in the textbook. Answers in Appendix I: 5,9,13,15,17,19,21,25,27,29,31,33,35,41,43,45,47,49,55abcde,57,59,61,63,65,67,69,71,73,75,89,91 6.1 CLASSIFICATION

More information

Test 7: Periodic Table Review Questions

Test 7: Periodic Table Review Questions Name: Wednesday, January 16, 2008 Test 7: Periodic Table Review Questions 1. Which halogen is a solid at STP? 1. fluorine 3. bromine 2. chlorine 4. iodine 2. Element M is a metal and its chloride has the

More information

Chapter 6: The Periodic Table Study Guide

Chapter 6: The Periodic Table Study Guide Chapter 6: The Periodic Table Study Guide I. General organization of table A. Modern periodic table 1. Increasing atomic number B. 3 major blocks 1. Metals a. Mostly solids at room temperature b. Conduct

More information

Mr. Dolgos Regents Chemistry. NOTE PACKET Unit 3: Periodic Table

Mr. Dolgos Regents Chemistry. NOTE PACKET Unit 3: Periodic Table *KEY* *KEY* Mr. Dolgos Regents Chemistry NOTE PACKET Unit 3: Periodic Table 1 *KEY* Click here to watch the vodcast: Unit 3 - The Periodic Table *KEY* VOCABULARY: Ionization energy Electronegativity Atomic

More information

B) atomic number C) both the solid and the liquid phase D) Au C) Sn, Si, C A) metal C) O, S, Se C) In D) tin D) methane D) bismuth B) Group 2 metal

B) atomic number C) both the solid and the liquid phase D) Au C) Sn, Si, C A) metal C) O, S, Se C) In D) tin D) methane D) bismuth B) Group 2 metal 1. The elements on the Periodic Table are arranged in order of increasing A) atomic mass B) atomic number C) molar mass D) oxidation number 2. Which list of elements consists of a metal, a metalloid, and

More information

The Periodic Table of The Elements

The Periodic Table of The Elements The Periodic Table of The Elements The Periodic Table The periodic table is a chart that organizes all the elements according to different categories Divided into three basic categories: Metals Non-Metals

More information

Composition and Structure of the Atom. Protons: Positively charged, high mass particle. Neutrons: Neutral (no) charge, high mass

Composition and Structure of the Atom. Protons: Positively charged, high mass particle. Neutrons: Neutral (no) charge, high mass Composition and Structure of the Atom Atom: basic unit of an element; smallest unit that retains chemical properties of an element Subatomic particles: Small particles that are the building blocks from

More information

The Periodic Table. Chapter 6

The Periodic Table. Chapter 6 The Periodic Table Chapter 6 Why is the Periodic Table important to me? The periodic table is the most useful tool to a chemist. You get to use it on every test. It organizes lots of information about

More information

Trends of the Periodic Table Basics

Trends of the Periodic Table Basics Trends of the Periodic Table Basics Trends are patterns of behaviors that atoms on the periodic table of elements follow. Trends hold true most of the time, but there are exceptions, or blips, where the

More information

Chemistry - Elements Electron Configurations The Periodic Table. Ron Robertson

Chemistry - Elements Electron Configurations The Periodic Table. Ron Robertson Chemistry - Elements Electron Configurations The Periodic Table Ron Robertson History of Chemistry Before 16 th Century Alchemy Attempts (scientific or otherwise) to change cheap metals into gold no real

More information

Copyrighted by Gabriel Tang B.Ed., B.Sc.

Copyrighted by Gabriel Tang B.Ed., B.Sc. Chapter 8: The Periodic Table 8.1: Development of the Periodic Table Johann Dobereiner: - first to discover a pattern of a group of elements like Cl, Br, and I (called triads). John Newland: - suggested

More information

Metals and Nonmetals

Metals and Nonmetals The Periodic Table and Atomic Properties The periodic table originally came from the observation that when the elements are arranged by atomic mass, properties recur periodically. (Mendeleev) Now we understand

More information

The Periodic Table - Grade 10 [CAPS]

The Periodic Table - Grade 10 [CAPS] OpenStax-CNX module: m38133 1 The Periodic Table - Grade 10 [CAPS] Free High School Science Texts Project This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License

More information

Untitled Document. 1. Which of the following best describes an atom? 4. Which statement best describes the density of an atom s nucleus?

Untitled Document. 1. Which of the following best describes an atom? 4. Which statement best describes the density of an atom s nucleus? Name: Date: 1. Which of the following best describes an atom? A. protons and electrons grouped together in a random pattern B. protons and electrons grouped together in an alternating pattern C. a core

More information

Atoms. Chemistry 100. Bettelheim, Brown, Campbell & Farrell. Introduction to General, Organic and Biochemistry Chapter 2

Atoms. Chemistry 100. Bettelheim, Brown, Campbell & Farrell. Introduction to General, Organic and Biochemistry Chapter 2 Chemistry 100 Bettelheim, Brown, Campbell & Farrell Ninth Edition Introduction to General, Organic and Biochemistry Chapter 2 Atoms Classifications of Matter: Elements An Element is a substance (for example,

More information

Transition metals: half-filled and fully-filled subshells have extra stability. d 5 s 1 d 10 s 1

Transition metals: half-filled and fully-filled subshells have extra stability. d 5 s 1 d 10 s 1 Unusual electron configurations Transition metals: half-filled and fully-filled subshells have extra stability. d 5 s 1 d 10 s 1 Examples: Cr and Cu Transition metal ions: s and d energy levels change

More information

What is an Atom? smallest particle of an element that still has the properties of that element

What is an Atom? smallest particle of an element that still has the properties of that element Date: Science 10 4.1 Atomic Theory & Bonding What is an Atom? smallest particle of an element that still has the properties of that element An atom = proton(s) + electron(s) + neutron(s) (PEN) Fun Fact:

More information

The Periodic Table: Periodic trends

The Periodic Table: Periodic trends Unit 1 The Periodic Table: Periodic trends There are over one hundred different chemical elements. Some of these elements are familiar to you such as hydrogen, oxygen, nitrogen and carbon. Each one has

More information

APS Science Curriculum Unit Planner

APS Science Curriculum Unit Planner APS Science Curriculum Unit Planner Grade Level/Subject Chemistry Stage 1: Desired Results Enduring Understanding Topic 1: Elements and the Periodic Table: The placement of elements on the periodic table

More information

Explain 'Dobereiner's Triads and its drawback.

Explain 'Dobereiner's Triads and its drawback. CLASS: X NCERT (CBSE) Chemistry: For Class 10 Page : 1 Question 1: Explain 'Dobereiner's Triads and its drawback. Dobereiner classified elements into groups of three where the atomic weight of the middle

More information

Atomic Structure & the Periodic Table CHAPTERS 4 & 5

Atomic Structure & the Periodic Table CHAPTERS 4 & 5 Atomic Structure & the Periodic Table CHAPTERS 4 & 5 Objectives Understandings: Chemical structure determines the properties of matter The identity and properties of individual elements is determined by

More information

Ch 3 Atomic Structure and the Periodic Table. Figure 3.1 size relationship is not to scale, ratio of average diameters atom/nucleus = 10 5

Ch 3 Atomic Structure and the Periodic Table. Figure 3.1 size relationship is not to scale, ratio of average diameters atom/nucleus = 10 5 1 Ch 3 Atomic Structure and the Periodic Table Figure 3.1 size relationship is not to scale, ratio of average diameters atom/nucleus = 10 5 2 Atoms are very small and spherical. Radii Range 0.9 x 10-10

More information

Unit 3 Study Guide: Electron Configuration & The Periodic Table

Unit 3 Study Guide: Electron Configuration & The Periodic Table Name: Teacher s Name: Class: Block: Date: Unit 3 Study Guide: Electron Configuration & The Periodic Table 1. For each of the following elements, state whether the element is radioactive, synthetic or both.

More information

PERIODIC TABLE. reflect

PERIODIC TABLE. reflect reflect Suppose you wanted to organize your locker at school. How could you separate and arrange everything in an organized way? You could place the books, notebooks, and folders on a shelf that is separate

More information

DEVELOPMENT OF THE PERIODIC TABLE

DEVELOPMENT OF THE PERIODIC TABLE DEVELOPMENT OF THE PERIODIC TABLE Prior to the 1700s, relatively few element were known, and consisted mostly of metals used for coinage, jewelry and weapons. From early 1700s to mid-1800s, chemists discovered

More information

Atoms and Elements. Outline Atoms Orbitals and Energy Levels Periodic Properties Homework

Atoms and Elements. Outline Atoms Orbitals and Energy Levels Periodic Properties Homework Atoms and the Periodic Table The very hot early universe was a plasma with cationic nuclei separated from negatively charged electrons. Plasmas exist today where the energy of the particles is very high,

More information

CLASSIFICATION OF ELEMENTS

CLASSIFICATION OF ELEMENTS CLASSIFICATION OF ELEMENTS Long Answer Questions: ) Define first and second ionization potentials. Why is the second ionization potential greater than the first ionization potential? Discuss three factors

More information

Name: Class: Date: ID: A

Name: Class: Date: ID: A Name: Class: Date: ID: A Chapter 5 Assessment Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Mendeleev arranged the elements in his periodic table in

More information

IONISATION ENERGY CONTENTS

IONISATION ENERGY CONTENTS IONISATION ENERGY IONISATION ENERGY CONTENTS What is Ionisation Energy? Definition of t Ionisation Energy What affects Ionisation Energy? General variation across periods Variation down groups Variation

More information

TRENDS IN THE PERIODIC TABLE

TRENDS IN THE PERIODIC TABLE Noble gases Period alogens Alkaline earth metals Alkali metals TRENDS IN TE PERIDI TABLE Usual charge +1 + +3-3 - -1 Number of Valence e - s 1 3 4 5 6 7 Electron dot diagram X X X X X X X X X 8 Group 1

More information

Chapter 8 Basic Concepts of the Chemical Bonding

Chapter 8 Basic Concepts of the Chemical Bonding Chapter 8 Basic Concepts of the Chemical Bonding 1. There are paired and unpaired electrons in the Lewis symbol for a phosphorus atom. (a). 4, 2 (b). 2, 4 (c). 4, 3 (d). 2, 3 Explanation: Read the question

More information

PERIODIC TABLE OF GROUPS OF ELEMENTS Elements can be classified using two different schemes.

PERIODIC TABLE OF GROUPS OF ELEMENTS Elements can be classified using two different schemes. 1 PERIODIC TABLE OF GROUPS OF ELEMENTS Elements can be classified using two different schemes. Metal Nonmetal Scheme (based on physical properties) Metals - most elements are metals - elements on left

More information

Chapter 3 Atoms & the. Chapter 3 Section 2 The Simplest Matter Pages 80-85

Chapter 3 Atoms & the. Chapter 3 Section 2 The Simplest Matter Pages 80-85 Chapter 3 Atoms & the Periodic Table Chapter 3 Section 2 The Simplest Matter Pages 80-85 The Elements There are many different types of atoms. An element is matter made up of only one kind of atom. An

More information

Section 11.3 Atomic Orbitals Objectives

Section 11.3 Atomic Orbitals Objectives Objectives 1. To learn about the shapes of the s, p and d orbitals 2. To review the energy levels and orbitals of the wave mechanical model of the atom 3. To learn about electron spin A. Electron Location

More information

Directions: Multiple Choice For each of the following questions, choose the answer that best answers the question and place it on your answer sheet.

Directions: Multiple Choice For each of the following questions, choose the answer that best answers the question and place it on your answer sheet. CHEMISTRY TEST: THE PERIODIC TABLE Directions: Multiple Choice For each of the following questions, choose the answer that best answers the question and place it on your answer sheet. 1. Which of the following

More information

1 Arranging the Elements

1 Arranging the Elements CHAPTER 12 1 Arranging the Elements SECTION The Periodic Table BEFORE YOU READ After you read this section, you should be able to answer these questions: How are elements arranged on the periodic table?

More information

Chemical Building Blocks: Chapter 3: Elements and Periodic Table

Chemical Building Blocks: Chapter 3: Elements and Periodic Table Name: Class: Date: Chemical Building Blocks: Chapter 3: Elements and Periodic Table Study Guide Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

More information

EXPERIMENT 4 The Periodic Table - Atoms and Elements

EXPERIMENT 4 The Periodic Table - Atoms and Elements EXPERIMENT 4 The Periodic Table - Atoms and Elements INTRODUCTION Primary substances, called elements, build all the materials around you. There are more than 109 different elements known today. The elements

More information

Introduction to the Periodic Table 3.1 Chemistry Periodic Table Layout 3.2 Periodic Table Trends 3.3 Periodic Table Basics - ptable.

Introduction to the Periodic Table 3.1 Chemistry Periodic Table Layout 3.2 Periodic Table Trends 3.3 Periodic Table Basics - ptable. The Periodic Table How is it set-up? Introduction to the Periodic Table 3.1 http://www.youtube.com/watch?v=tixidesxc0i&feature=relmfu Chemistry Periodic Table Layout 3.2 http://www.youtube.com/watch?v=pifpljgoah8

More information

Chemical Bonds: A Preview Chapter 9 Section 1.1 Forces called chemical bonds hold atoms together in molecules and keep ions in place in solid ionic

Chemical Bonds: A Preview Chapter 9 Section 1.1 Forces called chemical bonds hold atoms together in molecules and keep ions in place in solid ionic Chemical Bonds: A Preview Chapter 9 Section 1.1 Forces called chemical bonds hold atoms together in molecules and keep ions in place in solid ionic compounds. Chemical bonds are electrostatic forces; they

More information

TRENDS OF CHEMICAL AND PHYSICAL PROPERTIES IN PERIODIC TABLE

TRENDS OF CHEMICAL AND PHYSICAL PROPERTIES IN PERIODIC TABLE TRENDS OF CHEMICAL AND PHYSICAL PROPERTIES IN PERIODIC TABLE Sixth Course (General Chemistry) by Dr. Istadi 1 Trends in Atomic Size All physical and chemical behavior of the elements is based ultimately

More information

Chapter 3, Elements, Atoms, Ions, and the Periodic Table

Chapter 3, Elements, Atoms, Ions, and the Periodic Table 1. Which two scientists in 1869 arranged the elements in order of increasing atomic masses to form a precursor of the modern periodic table of elements? Ans. Mendeleev and Meyer 2. Who stated that the

More information

Periodic Table Questions

Periodic Table Questions Periodic Table Questions 1. The elements characterized as nonmetals are located in the periodic table at the (1) far left; (2) bottom; (3) center; (4) top right. 2. An element that is a liquid at STP is

More information

Chapter -9. Classification of Elements The periodic Table

Chapter -9. Classification of Elements The periodic Table Chapter -9 Classification of Elements The periodic Table SYNOPSIS From the earliest times, scientists have been trying to classify the available elements on the basis of their properties. Dobereiner proposed

More information

ATOMS AND THE PERIODIC TABLE CHAPTER 3 PHYSICAL SCIENCE

ATOMS AND THE PERIODIC TABLE CHAPTER 3 PHYSICAL SCIENCE ATOMS AND THE PERIODIC TABLE CHAPTER 3 PHYSICAL SCIENCE Chapter 3 Vocabulary Words (27 words) Nucleus Atomic number Proton Mass number Neutron Isotopes Electron Atomic mass unit (amu) Energy level Average

More information

Look at a periodic table to answer the following questions:

Look at a periodic table to answer the following questions: Look at a periodic table to answer the following questions: 1. What is the name of group 1? 2. What is the name of group 2? 3. What is the name of group 17? 4. What is the name of group 18? 5. What is

More information

Name. Worksheet: Periodic Trends. 11. Which sequence of elements is arranged in order of decreasing atomic radii?

Name. Worksheet: Periodic Trends. 11. Which sequence of elements is arranged in order of decreasing atomic radii? 1. Which statement best describes Group 2 elements as they are considered in order from top to bottom of the Periodic Table? (A) The number of principal energy levels increases, and the number of valence

More information

Mendeleev s s Table. Periodic Table Revisited. The Modern Periodic Table. Section 14.1 Classification of the Elements. Chapter 14 Chemical Periodicity

Mendeleev s s Table. Periodic Table Revisited. The Modern Periodic Table. Section 14.1 Classification of the Elements. Chapter 14 Chemical Periodicity Chapter Chemical Periodicity Section. Classification of the Elements OBJECTIVES: Explain why you can infer the properties of an element based on those of other elements in the periodic table. Use electron

More information

Cathkin High School CfE Higher Chemistry. Chemical Changes & Structure Trends in the Periodic Table

Cathkin High School CfE Higher Chemistry. Chemical Changes & Structure Trends in the Periodic Table Cathkin High School CfE Higher Chemistry Unit 1 : Part 2 Chemical Changes & Structure Trends in the Periodic Table Melting Point vs Atomic Number Boiling Point vs Atomic Number Page 1 of 11 Learning Outcomes

More information

CHAPTER REVIEW. 3. What category do most of the elements of the periodic table fall under?

CHAPTER REVIEW. 3. What category do most of the elements of the periodic table fall under? CHAPTER REVIEW EVIEW ANSWERS 1. alkaline-earth metals 2. halogens 3. metals. electron affinity 5. actinides 6. answers should involve the transmutation of one element to another by a change in the number

More information

Atomic Theory and Bonding

Atomic Theory and Bonding Atomic Theory and Bonding Textbook pages 168 183 Section 4.1 Summary Before You Read What do you already know about Bohr diagrams? Record your answer in the lines below. What are atoms? An atom is the

More information

Question Bank Periodic Table and Periodic Properties

Question Bank Periodic Table and Periodic Properties Question Bank Periodic Table and Periodic Properties 1. Name the following with reference to the elements of Modern Periodic Table. (1 26) (a) An alkali metal in period 2. Ans. Lithium (b) A halogen in

More information

Chapter 2 The Periodic Table

Chapter 2 The Periodic Table Chapter 2 The Periodic Table Periodic Pattern Classification of the Elements A. Metals vs. Nonmetals (Before 1800) 1. Metals - Solids, Lustrous, Malleable, Ductile, Conductors 2. Nonmetals - Solids, Liquids,

More information

Periodic Properties of the Elements. Effective Nuclear Charge, Zeff

Periodic Properties of the Elements. Effective Nuclear Charge, Zeff Key Concepts: Periodic Properties of the Elements 1. Understand and be able to predict and explain trends in effective nuclear charge, Z eff. 2. Understand and be able to predict and explain the periodic

More information

Elements may combine in more than one proportion to form more than one compound. Examples...

Elements may combine in more than one proportion to form more than one compound. Examples... 1 UNIT 5 - ATOMIC THEORY: THE NUCLEAR MODEL OF THE ATOM 2 3 Dalton s Atomic Theory 1) Each element is made up of tiny, individual particles called atoms. 2) Atoms are indivisible; they cannot be created

More information