# Figure Some common monatomic ions of the elements. Can you see any patterns?

Save this PDF as:

Size: px
Start display at page:

Download "Figure Some common monatomic ions of the elements. Can you see any patterns?"

## Transcription

1 Figure 2.16 Some common monatomic ions of the elements. Can you see any patterns?

2 Table 2.3 Common ions are in blue. Common Monoatomic Ions Cations Anions Charge Formula Name Charge Formula Name H + hydrogen hydride Li + lithium F - fluoride Na + K + Cs + Ag + Mg 2+ Ca 2+ Sr 2+ Ba 2+ Zn 2+ Cd 2+ Al 3+ sodium potassium cesium silver magnesium calcium strontium barium zinc cadmium aluminum H - Cl - Br - I - O 2- S 2- N 3- chloride bromide iodide oxide sulfide nitride

3 Naming binary ionic compounds The name of the cation is written first, followed by that of the anion. The name of the cation is the same as the name of the metal. Many metal names end in -ium. The name of the anion takes the root of the nonmetal name and adds the suffix -ide. Calcium and bromine form calcium bromide.

4 Sample Problem 2.5 Naming Binary Ionic Compounds PROBLEM: Name the ionic compound formed from the following pairs of elements: (a) magnesium and nitrogen (b) iodine and cadmium (c) strontium and fluorine (d) sulfur and cesium PLAN: SOLUTION: Use the periodic table to decide which element is the metal and which the nonmetal. The metal (cation) is named first and we use the -ide suffix on the nonmetal name root. (a) magnesium nitride (b) cadmium iodide (c) strontium fluoride (d) cesium sulfide

5 Sample Problem 2.6 Determining Formulas of Binary Ionic Compounds PROBLEM: PLAN: Write empirical formulas for the compounds named in Sample Problem 2.5. Compounds are neutral. We find the smallest number of each ion which will produce a neutral formula. Use subscripts to the right of the element symbol. SOLUTION: (a) Mg 2+ and N 3- ; three Mg 2+ (6+) and two N 3- (6-); Mg 3 N 2 (b) Cd 2+ and I - ; one Cd 2+ (2+) and two I - (2-); CdI 2 (c) Sr 2+ and F - ; one Sr 2+ (2+) and two F - (2-); SrF 2 (d) Cs + and S 2 - ; two Cs+ (2+) and one S 2 - (2-); Cs2 S

6 Table 2.4 (partial) Metals With Several Oxidation States Element Ion Formula Systematic Name Common Name Copper Cu +1 copper(i) cuprous Cobalt Iron Manganese Tin Cu +2 Co +2 Co +3 Fe +2 copper(ii) cupric cobalt(ii) cobalt (III) iron(ii) ferrous Fe +3 iron(iii) ferric Mn +2 Mn +3 Sn +2 Sn +4 manganese(ii) manganese(iii) tin(ii) stannous tin(iv) stannic

7 Sample Problem 2.7 PROBLEM: Determining Names and Formulas of Ionic Compounds of Elements That Form More Than One Ion Give the systematic names for the formulas or the formulas for the names of the following compounds: PLAN: SOLUTION: (a) tin(ii) fluoride (b) CrI 3 (c) ferric oxide (d) CoS Compounds are neutral. We find the smallest number of each ion which will produce a neutral formula. Use subscripts to the right of the element symbol. (a) Tin (II) is Sn 2+ ; fluoride is F - ; so the formula is SnF 2. (b) The anion I is iodide(i - ); 3I - means that Cr(chromium) is +3. CrI 3 is chromium(iii) iodide (c) Ferric is a common name for Fe 3+ ; oxide is O 2-, therefore the formula is Fe 2 O 3. (d) Co is cobalt; the anion S is sulfide(2-); the compound is cobalt (II) sulfide.

8 Table 2.5 (partial) Formula Name Some Common Polyatomic Ions Formula Name NH 4 + Cations ammonium H 3 O + hydronium Common Anions CH 3 COO - acetate CO 3-2 carbonate CN - OH - cyanide hydroxide CrO Cr 2 O chromate dichromate ClO 3 - chlorate O 2-2 oxide NO 2 - nitrite SO 4-2 sulfate NO 3 - nitrate PO 4-3 phosphate MnO 4 - permanganate

9 Figure 2.17 Naming oxoanions Prefixes Root Suffixes Examples No. of O atoms per root ate ClO - perchlorate 4 root ate ClO - chlorate 3 root ite ClO - chlorite 2 hypo root ite ClO - hypochlorite Table 2.6 Numerical Prefixes for Hydrates and Binary Covalent Compounds Number Prefix Number Prefix Number Prefix 1 mono 2 di 3 tri 4 tetra 5 penta 6 hexa 7 hepta 8 octa 9 nona 10 deca

10 Sample Problem 2.8 Determining Names and Formulas of Ionic Compounds Containing Polyatomic Ions PROBLEM: Give the systematic names or the formula or the formulas for the names of the following compounds: (a) Fe(ClO 4 ) 2 (b) sodium sulfite (c) Ba(OH) 2 8H 2 O PLAN: SOLUTION: Note that polyatomic ions have an overall charge so when writing a formula with more than one polyatomic unit, place the ion in a set of parentheses. (a) ClO - 4 is perchlorate; iron must have a 2+ charge. This is iron(ii) perchlorate. (b) The anion sulfite is SO 2-3 therefore you need 2 sodiums per sulfite. The formula is Na 2 SO 3. (c) Hydroxide is OH - and barium is a 2+ ion. When water is included in the formula, we use the term hydrate and a prefix which indicates the number of waters. So it is barium hydroxide octahydrate.

11 Sample Problem 2.9 Recognizing Incorrect Names and Formulas of Ionic Compounds PROBLEM: Something is wrong with the second part of each statement. Provide the correct name or formula. (a) Ba(C 2 H 3 O 2 ) 2 is called barium diacetate. (b) Sodium sulfide has the formula (Na) 2 SO 3. (c) Iron(II) sulfate has the formula Fe 2 (SO 4 ) 3. (d) Cesium carbonate has the formula Cs 2 (CO 3 ). SOLUTION: (a) Barium is always a +2 ion and acetate is -1. The di- is unnecessary. (b) An ion of a single element does not need parentheses. Sulfide is S 2-, not SO 2-3. The correct formula is Na 2 S. (c) Since sulfate has a 2- charge, only 1 Fe 2+ is needed. The formula should be FeSO 4. (d) The parentheses are unnecessary. The correct formula is Cs 2 CO 3.

12 Naming Acids 1) Binary acids solutions form when certain gaseous compounds dissolve in water. For example, when gaseous hydrogen chloride(hcl) dissolves in water, it forms a solution called hydrochloric acid. Prefix hydro- + anion nonmetal root + suffix -ic + the word acid - hydrochloric acid 2) Oxoacid names are similar to those of the oxoanions, except for two suffix changes: Anion -ate suffix becomes an -ic suffix in the acid. Anion -ite suffix becomes an -ous suffix in the acid. The oxoanion prefixes hypo- and per- are retained. Thus, BrO - 4 is perbromate, and HBrO 4 is perbromic acid; IO - 2 is iodite, and HIO 2 is iodous acid.

13 Sample Problem 2.10 Determining Names and Formulas of Anions and Acids PROBLEM: Name the following anions and give the names and formulas of the acids derived from them: (a) Br - (b) IO 3 - (c) CN - (d) SO 4 2- (e) NO 2 - SOLUTION: (a) The anion is bromide; the acid is hydrobromic acid, HBr. (b) The anion is iodate; the acid is iodic acid, HIO 3. (c) The anion is cyanide; the acid is hydrocyanic acid, HCN. (d) The anion is sulfate; the acid is sulfuric acid, H 2 SO 4. (e) The anion is nitrite; the acid is nitrous acid, HNO 2.

14 Sample Problem 2.11 Determining Names and Formulas of Binary Covalent Compounds PROBLEM: (a) What is the formula of carbon disulfide? (b) What is the name of PCl 5? (c) Give the name and formula of the compound whose molecules each consist of two N atoms and four O atoms. SOLUTION: (a) Carbon is C, sulfide is sulfur S and di-means 2 - CS 2. (b) P is phosphorous, Cl is chloride, the prefix for 5 is penta-. Phosphorous pentachloride. (c) N is nitrogen and is in a lower group number than O (oxygen). Therefore the formula is N 2 O 4 - dinitrogen tetraoxide.

15 Sample Problem 2.12 Recognizing Incorrect Names and Formulas of Binary Covalent Compounds PROBLEM: Explain what is wrong with the name of formula in the second part of each statement and correct it: (a) SF 4 is monosulfur pentafluoride. (b) Dichlorine heptaoxide is Cl 2 O 6. (c) N 2 O 3 is dinitrotrioxide. SOLUTION: (a) The prefix mono- is not needed for one atom; the prefix for four is tetra-. So the name is sulfur tetrafluoride. (b) Hepta- means 7; the formula should be Cl 2 O 7. (c) The first element is given its elemental name so this is dinitrogen trioxide.

16 Sample Problem 2.13 Calculating the Molecular Mass of a Compound PROBLEM: Using the data in the periodic table, calculate the molecular (or formula) mass of the following compounds: (a) tetraphosphorous trisulfide (b) ammonium nitrate PLAN: Write the formula and then multiply the number of atoms(in the subscript) by the respective atomic masses. Add the masses for the compound. SOLUTION: (a) P 4 S 3 molecular = (4xatomic mass of P) mass + (3xatomic mass of S) = (4x30.97amu) + (3x32.07amu) = amu molecular mass (b) NH 4 NO 3 = (2xatomic mass of N) + (4xatomic mass of H) + (3xatomic mass of O) = (2x14.01amu)+ (4x1.008amu) + (3x16.00amu) = 80.05amu

17 Sample Problem 2.14 Determining Formulas and Names from Molecular Depictions PROBLEM: Each box contains a representation of a binary compound. Determine its formula, name, and molecular (formula) mass. (a) (b) SOLUTION: (a) There is 1 sodium (brown) for every fluorine (green), so the formula is NaF. formula mass = (1x atomic mass of Na) + (1x atomic mass of F) = amu amu = amu (b) There are 3 fluorines (green) for every nitrogen (blue), so the formula is NF 3. molecular mass = (3x atomic mass of F) + (1x atomic mass of N) = (3x amu) amu = amu

18 Figure 2.19 The distinction between mixtures and compounds. S Fe Physically mixed therefore can be separated by physical means; in this case by a magnet. Allowed to react chemically therefore cannot be separated by physical means.

19 Organic chemistry is the branch of chemistry that deals with carbon compounds H Functional Groups H H O H C OH H C NH 2 H C C OH H methanol H methylamine H acetic acid 19

20 20

### Naming Compounds Handout

Naming Compounds Handout IONIC COMPOUNDS versus MOLECULAR COMPOUNDS ionic compound: consist of cations (positive ions) and anions (negative ions) held together by electrostatic attraction usually metal

### Nomenclature of Ionic Compounds

Nomenclature of Ionic Compounds Ionic compounds are composed of ions. An ion is an atom or molecule with an electrical charge. Monatomic ions are formed from single atoms that have gained or lost electrons.

### Naming Ionic Compounds

Naming Ionic Compounds I. Naming Ions A. Cations (+ions) 1. Element name followed by "ion" (when in Group IA, IIA, Al 3+, Ga 3+, Zn 2+, Cd 2+, Ag +, Ni 2+ ). Na + sodium ion, K + potassium ion, Al 3+ aluminum

### CHAPTER 5: MOLECULES AND COMPOUNDS

CHAPTER 5: MOLECULES AND COMPOUNDS Problems: 1-6, 9-13, 16, 20, 31-40, 43-64, 65 (a,b,c,e), 66(a-d,f), 69(a-d,f), 70(a-e), 71-78, 81-82, 87-96 A compound will display the same properties (e.g. melting

### Inorganic Nomenclature

Inorganic Nomenclature Chem 1-A Lab Lecture Spring 010 Chemical Formulas: the acronyms of chemistry Composed of element symbols, subscripts and sometimes parentheses Subscripts tell the number of atoms

### Naming Compounds. There are three steps involved in naming ionic compounds- naming the cation, naming the anion, and naming the entire compound.

Naming Compounds Naming compounds is an important part of chemistry. Most compounds fall in to one of three categories ionic compounds, molecular compounds, or acids. Part One: Naming Ionic Compounds Identifying

### Elements and Compounds. Chemical Bonds compounds are made of atoms held together by chemical bonds bonds are forces of attraction between atoms

Elements and Compounds elements combine together to make an almost limitless number of compounds the properties of the compound are totally different from the constituent elements Tro, Chemistry: A Molecular

### Monatomic Ions. A. Monatomic Ions In order to determine the charge of monatomic ions, you can use the periodic table as a guide:

Monatomic Ions Ions are atoms that have either lost or gained electrons. While atoms are neutral, ions are charged particles. A loss of electrons results in a positive ion or cation (pronounced cat-eye-on

### Summer Assignment Coversheet

Summer Assignment Coversheet Course: A.P. Chemistry Teachers Names: Mary Engels Assignment Title: Summer Assignment A Review Assignment Summary/Purpose: To review the Rules for Solubility, Oxidation Numbers,

### Naming ions and chemical compounds Worksheet #1. a. iodide ion b. barium ion c. mercury(ii) ion. d. Tin(IV) ion e. Phosphide ion f.

Naming ions and chemical compounds Worksheet #1 Write the symbol for each ion. Be sure to include the charge. a. iodide ion b. barium ion c. mercury(ii) ion d. Tin(IV) ion e. Phosphide ion f. Silver ion

### CHEMICAL NAMES AND FORMULAS

9 CHEMICAL NAMES AND FORMULAS SECTION 9.1 NAMING IONS (pages 253 258) This section explains the use of the periodic table to determine the charge of an ion. It also defines polyatomic ion and gives the

### Compounds (structure and naming)

Compounds (structure and naming) Compounds Ionic (made of ions) Composed of a Metal (left side) and a Nonmetal (right side) One element from the left side and one from the right side of the Periodic Table

### Formulas and Nomenclature

Formulas and Nomenclature Formulas First of all, the formulas are the symbols for compounds and molecules. There are three different types of formulas, which are, Empirical formula Molecular formula Structural

### Nomenclature and Formulas of Ionic Compounds. Section I: Writing the Name from the Formula

Purpose: Theory: Nomenclature and Formulas of Ionic Compounds 1. To become familiar with the rules of chemical nomenclature, based on the classification of compounds. 2. To write the proper name of the

### Naming Compounds Handout Key

Naming Compounds Handout Key p. 2 Name each of the following monatomic cations: Li + = lithium ion Ag + = silver ion Cd +2 = cadmium ion Cu +2 = copper (II) ion Al +3 = aluminum ion Mg +2 = magnesium ion

### Name: Block: Date: Test Review: Chapter 8 Ionic Bonding

Name: Block: Date: Test Review: Chapter 8 Ionic Bonding Part 1: Fill-in-the-blank. Choose the word from the word bank below. Each word may be used only 1 time. electron dot structure metallic electronegativity

### Sample Exercise 2.1 Illustrating the Size of an Atom

Sample Exercise 2.1 Illustrating the Size of an Atom The diameter of a US penny is 19 mm. The diameter of a silver atom, by comparison, is only 2.88 Å. How many silver atoms could be arranged side by side

### Polyatomic ions can form ionic compounds just as monatomic ions.

1 POLYATOMIC IONS We have seen that atoms can lose or gain electrons to become ions. Groups of atoms can also become ions. These groups of atoms are called polyatomic ions. Examples: O hydroxide ion NO

### Chapter 5 - Molecules and Compounds

Chapter 5 - Molecules and Compounds How do we represent molecules? In pictures In formula In name Ionic compounds Molecular compounds On the course website, you will find a list of ions that I would like

### 19.2 Chemical Formulas

In the previous section, you learned how and why atoms form chemical bonds with one another. You also know that atoms combine in certain ratios with other atoms. These ratios determine the chemical formula

### CHEMICAL NOMENCLATURE

CHEMICAL NOMENCLATURE Chemical nomenclature The process of giving unambiguous chemical formulas or chemical names to elements and compounds Introduction Chemistry is the study of matter (elements and compounds)

### Rules for Naming and Writing Compounds

Rules for Naming and Writing Compounds I. Ionic Bonds bonding between a metal and nonmetal or the bond between a positive ion and a negative ion forming a binary compound. end in the suffix "ide" Or bonding

### CHAPTER 9. 9.1 Naming Ions. Chemical Names and Formulas. Naming Transition Metals. Ions of Transition Metals. Ions of Transition Metals

CHAPTER 9 Chemical Names and Formulas 9.1 Naming Ions Monatomic Ions: a single atom with a positive or negative charge Cation (rules): listed first Anion (rules): ide ending Transition Metals have a varying

### Oxidation States of Nitrogen

Oxidation States of Nitrogen HNO 3 NH 3 HNO 2 NO N 2 O N 2 HN 3 N 2 H 5 + +3 +2 +1 0-1/3-2 Oxidation +5-3 Reduction Oxidation States of Chlorine HClO 4 HClO 3 ClO 2 HClO 2 HClO Cl 2 HCl +5 +4 +3 +1 0 Oxidation

### Rules of Nomenclature for Binary Compounds

NAME: DATE: Rules of Nomenclature for Binary Compounds There are three types of binary compounds: Type I. A metal of fixed charge and a nonmetal; Type II. A metal of variable charge and a nonmetal; and

### Nomenclature Packet. 1. Name the following ionic compounds: a. Al 2 O 3 Aluminum oxide. b. Cs 2 O Cesium oxide. c. Rb 3 N Rubidium nitride

Nomenclature Packet Worksheet I: Binary Ionic Compounds (representative metals) metals from groups 1A, 2A, and 3A (1, 2, and 13) have constant charges as ions and do NOT get Roman Numerals in their names

### Language of Chemistry

CHAPTER Language of Chemistry 6 Sect 6.1 Classificat of Compounds 2. Compound Classificat Compound Classificat (a) NH 3 binary molecular (b) Fe 2 O 3 binary ic (c) BaSO 4 ternary ic (d) H 2 SO 4 (aq) ternary

### EXPERIMENT 5: CHEMICAL REACTIONS AND EQUATIONS

PURPOSE EXPERIMENT 5: CHEMICAL REACTIONS AND EQUATIONS To perform and observe simple chemical reactions. To identify the products of chemical reactions and write balanced equations for those reactions.

### FORMULAS AND NOMENCLATURE OF IONIC AND COVALENT COMPOUNDS Adapted from McMurry/Fay, section 2.10, p. 56-63 and the 1411 Lab Manual, p. 27-31.

FORMULAS AND NOMENCLATURE OF IONIC AND COVALENT COMPOUNDS Adapted from McMurry/Fay, section 2.10, p. 56-63 and the 1411 Lab Manual, p. 27-31. TYPES OF COMPOUNDS Ionic compounds are compounds composed of

### CHEMICAL NAMES AND FORMULAS

6 CEMICAL NAMES AND FORMULAS SECTION 6.1 INTRODUCTION TO CEMICAL BONDING (pages 133 137) This section explains how to distinguish between ionic and molecular compounds. It also defines cation and anion

### Chapter 5. Chapter 5. Naming Ionic Compounds. Objectives. Chapter 5. Chapter 5

Objectives Name cations, anions, and ionic compounds. Write chemical formulas for ionic compounds such that an overall neutral charge is maintained. Explain how polyatomic ions and their salts are named

### The Chemistry Name Game

The Chemistry Name Game Contributed by Butane: The Carroll College Chemistry Club Main Science Idea for Kids As students play the Chemistry Name Game, they will learn why compounds form as they do. They

### Chapter 3 Chemical Compounds

Chapter 3 Chemical Compounds 3.1 (a) formula unit; (b) strong electrolyte; (c) molecular compound; (d) acid; (e) nonelectrolyte; (f) oxoanion 3.2 (a) molecular formula; (b) weak electrolyte; (c) ionic

### Elements, Compounds, subscript, superscript, coefficient Periodic Table o Periods, groups, etc. o Metals o Non-metals o Metalloids

Chemistry Elements, Compounds, subscript, superscript, coefficient Periodic Table o Periods, groups, etc. o Metals o Non-metals o Metalloids The patterns are related to the chemical properties of the element.

### Nomenclature: How to Name Chemicals

Nomenclature: How to Name Chemicals Introduction Many of the chemicals we use at home have common names. Baking soda is used as a rising agent in cookies. Bleach is used to whiten our clothes. Ammonia

### Ionic Compounds and Ionic Bonding

Ionic Compounds and Ionic Bonding 1 Chemical Bonds There are three basic types of bonds: Ionic The electrostatic attraction between ions Covalent The sharing of electrons between atoms Metallic Each metal

### 4. FORMATION OF COMPOUNDS

4. FORMATION OF COMPOUNDS The noble (inert) gases 2 He, 10 Ne, 18 Ar, 36 Kr, 54 Xe are so called because they are chemically unreactive. In science, this is indicative of stability. The noble gases are

### Tutorial 2 FORMULAS, PERCENTAGE COMPOSITION, AND THE MOLE

T-6 Tutorial 2 FORMULAS, PERCENTAGE COMPOSITION, AND THE MOLE FORMULAS: A chemical formula shows the elemental composition of a substance: the chemical symbols show what elements are present and the numerical

### Chapter 4: Nonionic Compounds and Their Nomenclature

50 Chapter 4: Nonionic Compounds and Their Nomenclature A nonionic compound is a substance composed of atoms held together by chemical bonding forces, called covalent bonds. Covalent bonds are formed by

### Activity One: Binary Ionic Compounds Composed of Main Group Elements

Activity One: Binary Ionic Compounds Composed of Main Group Elements This activity focuses on the nomenclature rules for ionic compounds composed of two different elements from select groups on the periodic

### Naming Compounds Tutorial and Worksheet

Naming Compounds Tutorial and Worksheet Since we use different methods in naming binary covalent (molecular) compounds and ionic compounds, the first step in naming or writing the formula of a compound

### Welcome to AP CHEMISTRY

Welcome to AP CHEMISTRY Things To Know for AP Chem with Mrs. Johnson: 1) Get REALLY comfortable with the Periodic Table that I have provided in this packet. Use it for practice problems in the summer work;

### Chapter 6 More on Chemical Compounds. An Introduction to Chemistry by Mark Bishop

Chapter 6 More on Chemical Compounds An Introduction to Chemistry by Mark Bishop Chapter Map Monatomic Ion Names Monatomic Cations (name of metal) Groups 1, 2, and 3 metals Al 3+, Zn 2+, Cd 2+, Ag + (name

### Ionic bonds are the electrostatic attraction of oppositely charged ions. The cation is usually a metal, and the anion is usually a nonmetal.

Chapter 4 Ionic Bond Introduction Atoms can gain or lose valence electrons to become ions. Ions can be monatomic, such as Ca 2+ and Cl, or polyatomic, such as NH 4 1+ and CO 3. An bond is the electrostatic

### The Components of Matter

Chapter 2 The Components of Matter 1 Chapter 2: The Components of Matter 2.1 Elements, Compounds, and Mixtures: An Atomic Overview 2.2 The Observations That Led to an Atomic View of Matter 2.3 Dalton s

### WRITING CHEMICAL FORMULA

WRITING CHEMICAL FORMULA For ionic compounds, the chemical formula must be worked out. You will no longer have the list of ions in the exam (like at GCSE). Instead you must learn some and work out others.

### Chapter 9 Practice Test - Naming and Writing Chemical Formulas

Chapter 9 Practice Test - Naming and Writing Chemical Formulas Matching Match each itme with the correct statement below. Match each item with the correct statement below. a. monatomic ion f. cation b.

### 9/4/11. Chapter 2. The Components of Matter. Definitions for Components of Matter. Definitions for Components of Matter. Law of Mass Conservation

Chapter 2: The Components of Matter Chapter 2 2.1 Elements, Compounds, and Mixtures: An Atomic Overview 2.2 The Observations That Led to an Atomic View of Matter 2.3 Dalton s Atomic Theory The Components

### ANSWERS: Formula writing and nomenclature of inorganic compounds

ANSWERS: Formula writing and nomenclature of inorganic compounds 1. Determine the oxidation number of S in each of the following compounds: a) Na 2 S 2 O 3 ans. a) +2 b) H 2 SO 3 b) +4 c) SO 2 c) +4 d)

### PERIODIC TABLE OF THE ELEMENTS

PERIODIC TABLE OF THE ELEMENTS Periodic Table: an arrangement of elements in horizontal rows (Periods) and vertical columns (Groups) exhibits periodic repetition of properties First Periodic Table: discovered

### AP Chemistry Chapter 2 Notes: Atoms, Molecules, & Ions

AP Chemistry Chapter 2 Notes: Atoms, Molecules, & Ions The History of Atomic Theory Circa. 400-5 BC. Greek philosopher Democritus proposes the idea of matter being made up of small, indivisible particles

### AP Chemistry Pre-Course Packet

AP Chemistry PreCourse Packet AP Chemistry, Fall 2015 Get excited (and ready) for AP Chemistry! Name: Included in this packet is information about the exam and information you should KNOW (memorize or

### Topic 4 National Chemistry Summary Notes. Formulae, Equations, Balancing Equations and The Mole

Topic 4 National Chemistry Summary Notes Formulae, Equations, Balancing Equations and The Mole LI 1 The chemical formula of a covalent molecular compound tells us the number of atoms of each element present

### Chapter 4 Compounds and Their Bonds

Chapter 4 Compounds and Their Bonds 4.1 Octet Rule and Ions Octet Rule An octet is 8 valence electrons. is associated with the stability of the noble gases. He is stable with 2 valence electrons (duet).

### Chapter 2 Atoms Molecules and Ions

Chapter 2 Atoms Molecules and Ions Student: NOTE: A periodic table is required to work many of the problems in this chapter. 1. The elements in a column of the periodic table are known as A. metalloids.

### Nomenclature and the Periodic Table To name compounds and to determine molecular formulae from names a knowledge of the periodic table is helpful.

Nomenclature and the Periodic Table To name compounds and to determine molecular formulae from names a knowledge of the periodic table is helpful. Atomic Number = number of protons Mass Number = number

### Chemical Nomenclature and Formula Writing

Chemical Nomenclature and Formula Writing Chemical nomenclature is the system that chemists use to identify and name compounds. Compounds can have two types of names: systematic names (names that identify

### Nomenclature of chemical compounds

Nomenclature of chemical compounds Oxidation state - an alternate term that can be used when referring to the charge on an atom. The oxidation number is assigned according to a standard set of rules. They

### CHAPTER 3 COMPOUNDS AND MOLECULES

Chapter 3 Compounds and Molecules Page 1 CHAPTER 3 COMPOUNDS AND MOLECULES 3-1. Octane, a component of gasoline, has eight carbon atoms and eighteen hydrogen atoms per molecule. Its formula is written

### PART I: MULTIPLE CHOICE (30 multiple choice questions. Each multiple choice question is worth 2 points)

CHEMISTRY 123-07 Midterm #1 Answer key October 14, 2010 Statistics: Average: 74 p (74%); Highest: 97 p (95%); Lowest: 33 p (33%) Number of students performing at or above average: 67 (57%) Number of students

### Principles and Modern Applications Petrucci Harwood Herring 8 th Edition. A combination of two or more different elements.

General Chemistry Principles and Modern Applications Petrucci Harwood Herring 8 th Edition Chapter 3: Chemical Compounds Dr. Burak Esat Fatih University Chem 107Fall 2013 1 Compound: A combination of two

### Chemistry B2A Chapter 12 Chemical Bonding

Chemistry B2A Chapter 12 Chemical Bonding Octet rule-duet role: when undergoing chemical reaction, atoms of group 1A-7A elements tend to gain, lose, or share sufficient electrons to achieve an electron

### Solution. Practice Exercise. Concept Exercise

Example Exercise 8.1 Evidence for a Reaction Which of the following is experimental evidence for a chemical reaction? (a) Pouring vinegar on baking soda gives foamy bubbles. (b) Mixing two solutions produces

### Decomposition. Composition

Decomposition 1. Solid ammonium carbonate is heated. 2. Solid calcium carbonate is heated. 3. Solid calcium sulfite is heated in a vacuum. Composition 1. Barium oxide is added to distilled water. 2. Phosphorus

### Chapter 2 Part 2 Honors Review

Chapter 2 Part 2 Honors Review Student: 1. An anion is defined as A. a charged atom or group of atoms with a net negative charge. B. a stable atom. C. a group of stable atoms. D. an atom or group of atoms

### Naming Ionic Compounds. Names of Ionic Compounds. Identify the Ions. Identifying Ions Examples. 1. Identify the ions. 2.

Naming Ionic Compounds Names of Ionic Compounds 1. Identify the ions 2. Name the cation 3. Name the The ions are d in the same order that they are written in the. Name only one cation and only one. Identify

### Formulae, Equations & Formula Mass

St Peter the Apostle High School Chemistry Department Formulae, Equations & Formula Mass N4 & N5 Homework Questions Answer questions as directed by your teacher. National 4 level questions are first followed

### AP Chemistry Reaction Questions

AP Chemistry Reaction Questions Directions: Give the formulas to show the reactants and the products for the following chemical reactions. Each of the reactions occurs in aqueous solution unless otherwise

### CHAPTER 3: ANSWERS TO SELECTED PROBLEMS. F Se F

APTER 3: ANSWERS T SELETED PRBLEMS SAMPLE PRBLEMS ( Try it yourself ).... 3.1 : l.. : I.. :.. 3.2 : l.. : 3.3 Selenium needs two more electrons to satisfy the octet rule, and fluorine needs one. The simplest

### Chemical Nomenclature

Naming and Writing hemical Formulas hemical Nomenclature VOABULARY Ion an atom or group of atoms that has gained or lost electrons Monatomic ion an atom that has gained or lost electrons and has a charge

### Balancing Chemical Equations

Balancing Chemical Equations 1. sodium carbonate + calcium hydroxide sodium hydroxide + calcium carbonate Na 2 CO 3 + Ca(OH) 2 2 NaOH + CaCO 3 2. carbon dioxide + water carbonic acid CO 2 + H 2 O H 2 CO

### Chapter 9. Answers to Questions

Chapter 9 Answers to Questions 1. Word equation: Silicon Tetrachloride + Water Silicon Dioxide + Hydrogen Chloride Formulas: Next, the chemical formulas are needed. As these are all covalent compounds,

### COMPOUNDS. 8]VeiZg. Introduction. In this chapter

8]VeiZg ( COMPOUNDS Introduction Compounds are formed when different elements react chemically. This chemical interaction involves the outermost electrons of the atoms of each element. To understand the

### Chapter 4: Structure and Properties of Ionic and Covalent Compounds

Chapter 4: Structure and Properties of Ionic and Covalent Compounds 4.1 Chemical Bonding o Chemical Bond - the force of attraction between any two atoms in a compound. o Interactions involving valence

### WRITE IN THE CORRECT FORMULA THEN BALANCE THE CHEMICAL EQUATIONS

WRITE IN THE CORRECT FORMULA THEN BALANCE THE CHEMICAL EQUATIONS 1. Hydrogen Oxygen Water METALLIC OXIDE WATER BASE 2. Sodium oxide Water Sodium hydroxide 3. Calcium oxide Water Calcium hydroxide 4. Potassium

### FUNDAMENTAL LAWS OF CHEMISTRY

1 FUNDAMENTAL LAWS OF CHEMISTRY Lavoisier s Fundamental Laws of Chemistry - Father of Modern Chemistry - Late 18 th century French aristocrat - Guillotined during the French Revolution. 1. Law of Mass

### Chapter 6 Assessment. Name: Class: Date: ID: A. Multiple Choice Identify the choice that best completes the statement or answers the question.

Name: Class: Date: ID: A Chapter 6 Assessment Multiple Choice Identify the choice that best completes the statement or answers the question. 1. When an atom loses an electron, it forms a(n) a. anion. c.

### *The first spelling is used if the stem of the element begins with a consonant and the second spelling if the stem of the element begins with a vowel.

NAMING INORGANIC COMPOUNDS Introduction A primary control in chemical experiments is knowing the identity of the initial substances. This knowledge can be communicated by the name of the substances and

### INORGANIC NOMENCLATURE ~ NAMING INORGANIC COMPOUNDS

INORGANIC NOMENCLATURE ~ NAMING INORGANIC COMPOUNDS Every compound has its own CHEMICAL FORMULA and its own NAME. The nomenclature (naming systems) for IONIC and MOLECULAR compounds are different. IONIC

### Unit 4 Conservation of Mass and Stoichiometry

9.1 Naming Ions I. Monatomic Ions A. Monatomic ions 1. Ions formed from a single atom Unit 4 Conservation of Mass and Stoichiometry B. Naming Monatomic Ions 1. Monatomic cations are a. Identified by the

### Balancing Chemical Equations Worksheet

Balancing Chemical Equations Worksheet Student Instructions 1. Identify the reactants and products and write a word equation. 2. Write the correct chemical formula for each of the reactants and the products.

### NAMING QUIZ 3 - Part A Name: 1. Zinc (II) Nitrate. 5. Silver (I) carbonate. 6. Aluminum acetate. 8. Iron (III) hydroxide

NAMING QUIZ 3 - Part A Name: Write the formulas for the following compounds: 1. Zinc (II) Nitrate 2. Manganese (IV) sulfide 3. Barium permanganate 4. Sulfuric acid 5. Silver (I) carbonate 6. Aluminum acetate

### HOMEWORK 4A. Definitions. Oxidation-Reduction Reactions. Questions

HOMEWORK 4A Oxidation-Reduction Reactions 1. Indicate whether a reaction will occur or not in each of following. Wtiring a balcnced equation is not necessary. (a) Magnesium metal is added to hydrochloric

### Instructions and Sequence for Using the Atom Board

Instructions and Sequence for Using the Atom Board Bohr s atomic model is a representation of protons, neutrons, and electrons and their relationships within an atom. Because these particles are so small

### Chapter 3. Molecules, Compounds and Chemical Equations

3. Molecules, Compounds and Chemical Equations Stoichiometry Mole concept and Avogadro s Number Determining Chemical Formulas Name Compound Balancing Chemical Reactions Yields Solutions and Stoichiometry

### CHEMICAL EQUATIONS and REACTION TYPES

31 CHEMICAL EQUATIONS and REACTION TYPES The purpose of this laboratory exercise is to develop skills in writing and balancing chemical equations. The relevance of this exercise is illustrated by a series

### Naming and Writing Formulas for Ionic Compounds Using IUPAC Rules

Naming and Writing Formulas for Ionic Compounds Using IUPAC Rules There are three categories of ionic compounds that we will deal with. 1.Binary ionic o simple ions (only single charges) o multivalent

### Worksheet 25 - Oxidation/Reduction Reactions

Worksheet 25 Oxidation/Reduction Reactions Oxidation number rules: Elements have an oxidation number of 0 Group I and II In addition to the elemental oxidation state of 0, Group I has an oxidation state

### The Periodic Table, and naming inorganic compounds

Haverford College, Chemistry 100 POGIL exercise on Periodic Table and Nomenclature p. 1 The Periodic Table, and naming inorganic compounds Why? The periodic table is a useful visual aid to remembering

### Moles, Molecules, and Grams Worksheet Answer Key

Moles, Molecules, and Grams Worksheet Answer Key 1) How many are there in 24 grams of FeF 3? 1.28 x 10 23 2) How many are there in 450 grams of Na 2 SO 4? 1.91 x 10 24 3) How many grams are there in 2.3

### Name period Unit 3 worksheet

Name period Unit 3 worksheet Read chapter 8, 2.52.7 1. Explain the difference between metallic, ionic, and covalent bonding Metallic cations share a sea of electrons Ionic atoms give and take electrons

### Exercise 3.5 - Naming Binary Covalent Compounds:

Chapter Exercise Key 1 Chapter Exercise Key Exercise.1 Classifying Compounds: Classify each of the following substances as either a molecular compound or an ionic compound. a. formaldehyde, CH 2 O (used

### Study Guide For Chapter 7

Name: Class: Date: ID: A Study Guide For Chapter 7 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The number of atoms in a mole of any pure substance

### Polyatomic Ions Worksheet. 2. Name or write the formula for the following Type I polyatomic ionic compounds

Polyatomic Ions Worksheet Polyatomic Practice 1. Name or write the formula for the following polyatomic ions sulfate - CO nitrite MnO perphosphate - SO hypoiodite BrO chlorite - CO phosphite - PO percarbonate

### CHEMISTRY Quiz #1 answer key September 16, 2010

CHEMISTRY 123-07 Quiz #1 answer key September 16, 2010 Statistics: Average: 37 p (74%); Highest: 48 p (96%); Lowest: 20 p (40%) Number of students performing at or above average: 69 (58%) Number of students

### SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001

SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001 1. A small pin contains 0.0178 mol of iron. How many atoms of iron are in the pin? 2. A sample

### 9. The molar mass of hydrazine is 32 g/mol and its empirical formula is NH 2. What is its molecular formula?

Dr. Rogers Solutions Homework 1. Give the name for the following compounds and state whether they are ionic or not A. Ba(NO 3 ) 2 B. NaH C. PCl 5 D. CO E. NH 4 OH F. Ca(MnO 4 ) 2 G. N 2 O 4 H. NaHSO 4

Naming Ionic Compounds Practice Worksheet Name the following ionic compounds: 1) NH 4 Cl 2) Fe(NO 3 ) 3 3) TiBr 3 4) Cu 3 P 5) SnSe 2 6) GaAs 7) Pb(SO 4 ) 2 8) Be(HCO 3 ) 2 9) Mn 2 (SO 3 ) 3 10) Al(CN)