Writing Chemical Formulas
|
|
|
- Lawrence Cross
- 7 years ago
- Views:
Transcription
1 Science Objectives Students will understand that the chemical formula identifies each constituent element by its chemical symbol. Students will understand that a subscript after the chemical symbol indicates the number of atoms of each element found in each discrete molecule of that compound. Students will recognize that the valence of an element determines the ratio that atoms will combine with one another to form a neutral compound. Students will understand that atoms always combine with one another in simple whole number ratios. Vocabulary cation ionic compound valence anion ionic charge About the Lesson This lesson involves students practicing writing chemical formulas for ionic binary compounds. The activity consists of four parts: Students will write chemical formulas given a cation and an anion. Students will determine the charge of a transition metal given a formula of a compound. Students will write chemical formulas given the name of a compound. Students will name a compound given its formula. As a result, students will: Reinforce understanding of the concept of ionic charges necessary to write the chemical formula of ionic compounds. Recognize that the valences of the elements determine the ratio of the elements in a compound. TI-Nspire Navigator Send out the Writing_Chemical_Formulas.tns file. Monitor student progress using Class Capture. Use Live Presenter to spotlight student answers. Activity Materials Compatible TI Technologies: TI-Nspire CX Handhelds, TI-Nspire Apps for ipad, TI-Nspire Software Tech Tips: This activity includes class Nspire CX handheld. It is also appropriate for use with the TI-Nspire family of products including TI-Nspire software and TI-Nspire App. Slight variations to these directions may be required if using other technologies besides the handheld. Watch for additional Tech Tips throughout the activity for the specific technology you are using. Access free tutorials at captures taken from the TI- calculators/pd/us/online- Learning/Tutorials Lesson Files: Student Activity Writing_Chemical_Formulas _Student.doc Writing_Chemical_Formulas _Student.pdf Periodic table of elements. TI-Nspire document Writing_Chemical_ Formulas.tns 2014 Texas Instruments Incorporated 1 education.ti.com
2 Discussion Points and Possible Answers Have students answer all questions on the student worksheet. Move to page Students are to review the directions given in the pop-up information box. They can close the Directions box by selecting. In this part of the activity students will write a chemical formula for a given cation and anion pair. Tech Tip: To access the Directions again, select b or Document Tools ( ) > Writing Chemical Formulas > Directions. Tech Tip: To access the Directions again, select > Directions. Q1. Using the Periodic table, determine the valence of Li and F and record it in the table below in the corresponding boxes. Explain your answer. Answer: Li is in group 1, it has a valence 1+. F is in group 7 and has a valence1-. Q2. What are ionic charges of the given cation and anion, Li and F? Why? Answer: Valences help to determine the ionic charge. The lithium ion Li + has a charge of 1+, the fluorine ion, F + is 1+. Note: The 1 is ignored when determining the ionic charge in group 1 and group 7 elements. Q3. What is the simplest ratio of positive and negative ions that is needed to produce a neutral compound? Answer: the ratio is 1 Li to 1 F. Q4. Determine the chemical formula for the Li and F compound. Check your answer by typing the formula in the ChemBox on page 1.2 Then write correct formula in the corresponding box in the table below Texas Instruments Incorporated 2 education.ti.com
3 Anions F Cl Br O S N P Cations + Valence Li 1+ LiF LiCl LcBr Li 2 O Li 2 S Li 3 N Li 3 P Na 1+ NaF NaCl NaBr Na 2 O Na 2 S Na 3 N Na 3 P K 1+ KF KCl KBr K 2 O K 2 S K 3 N K 3 P Mg 2+ MgF 2 MgCl 2 MgBr 2 MgO MgS Mg 3 N 2 Mg 3 P 2 Ca 2+ CaF 2 CaCl 2 CaBr 2 CaO CaS Ca 3 N 2 Ca 3 P 2 Sr 2+ SrF 2 SrCl 2 SrBr 2 SrO SrS Sr 3 N 2 Sr 3 P 2 Al 3+ AlF 3 AlCl 3 AlBr 3 Al 2 O 3 Al 2 S 3 AlN AlP 2. Students are to click the up or down arrows to select different cation and anion combinations. Q5. Determine the valence of each cation and anion and record them in the table above in the corresponding boxes. Explain your answers. Answer: Na and K are in group 1 and have valences of 1+. Mg, Ca, and Sr are in group 2 and have valences of 2+, Al is in group 3 and has a valence of 3+. Cl and Br are in group 7 and have valences of 1-, O and S are in group 6 and have valences of 2-, N and P are in group 5 and have valences of 3-. Q6. Determine the chemical formula for each cation and anion combination. Check your answer by typing the formula in the ChemBox on page 1.2 Then write correct formula in the corresponding box in the table above. Q7. Explain how to choose the subscripts in a chemical formula of an ionic compound given the valences of the anion and cation. Answer: The subscripts are the numbers in the simplest ratio of anions and cations that is needed to produce a neutral compound in each case. The ionic charge is determined by the valence of an element. For example, since charge of Al is +3 and charge of O is -2, two aluminum ions (charge +6) will balance three oxygen ions (charge 6). Thus the ratio of Al to O is 2 to 3 to produce the neutral compound. The resulting formula is Al 2 O Texas Instruments Incorporated 3 education.ti.com
4 Move to page Students are to review the directions given in the pop-up information box. They can close the Directions box by selecting. In this part of the activity students will determine the charge of the transition metal in the given compound. Q8. Given the correct chemical formula for a compound containing transition metal, how can you determine the charge of the metal cation? Answer: The charge of the metal cation can be found knowing the ionic charge of the anion and number of anions and cations in the compound and using the fact that total charge of the compound is zero. Q9. What is the ionic charge of the anion in the given compound ScCl 3? Explain your answer. Answer: The anion is Cl, located in group 7, so its valency is 1- and its charge is 1. Q10. What is the ionic charge of the cation in the given compound ScCl 3? Explain your answer. Answer: Since there are three atoms of Cl, so the total charge of atoms of Cl is 3. Thus, the charge of one atom of Sc is +3 in order to have neutral compound. 4. Students need to type their answer in the ChemBox on page 1.3 to check it. They need to use l to insert superscript for the charge. 5. Students are to use the up or down arrows to select all available compounds. Q11. For each given compound, complete the table below and determine the ionic charge of the metal in the compound. Check your answer by typing the ion formula in the ChemBox on page Texas Instruments Incorporated 4 education.ti.com
5 Compound Anion Cation Ionic Number of Total Total Number of Ionic Formula Charge Elements Charge Charge Elements Charge ScCl Sc 3+ CoF Co 2+ VCl V 4+ CrBr Cr 3+ MnCl Mn 2+ FeCl Fe 2+ Cu 2 O Cu + ZnF Zn 2+ FeCl Fe 3+ MnCl Mn 4+ MnBr Mn 4+ CrP Cr 6+ MnS Mn 10+ Mn 2 O Mn 7+ CuCl Cu 2+ Q12. Explain why you could not use periodic table to determine ionic charge of the metal in these compounds. Answer: transition metals have variable valency because they have unfilled d-orbitals. Move to page Students are to review the directions given in the pop-up information box. They can close the Directions box by selecting. In this part of the activity students will write the chemical formula given the name of a compound. Q13. Determine the chemical formula for each compound given in the table below. Record your formula in the table. Check your work by typing the formula in the ChemBox. Teacher Tip: Discuss with the students chemical names and suffixes. Point their attention to the fact that there is a big difference between the "ide", "ate" and "ite" suffixes. As a general rule an "ide" suffix indicates an element, e.g. sulfide S 2, nitride N 3 and phosphide P Texas Instruments Incorporated 5 education.ti.com
6 Magnesium fluoride MgF 2 Calcium iodide CaI 2 Lithium oxide Li 2 O Calcium nitride Ca 3 N 2 Zinc (II) oxide ZnO Copper (I) oxide Cu 2 O Manganese (II) bromide MnBr 2 Tin (IV) oxide SnO 2 Nickel (II) oxide NiO Cadmium sulfide CdS Barium hydride BaH 2 Barium nitride Ba 3 N 2 Aluminum iodide AlI 3 Cesium nitride Cs 3 N Aluminum chloride AlCl 3 Magnesium bromide MgBr 2 Silver (I) bromide AgBr Sodium nitride Na 3 N Potassium iodide KI Aluminum nitride AlN Tin (II) nitride Sn 3 N 2 Iron (II) iodide FeI 2 Sodium bromide NaBr Calcium oxide CaO Aluminum oxide Al 2 O 3 Calcium phosphide Ca 3 P 2 Tin (II) sulfide SnS Iron (III) sulfide Fe 2 S 3 Mercury (II) oxide HgO Potassium nitride K 3 N Lead (II) sulfide PbS Strontium sulfide SrS Silver (I) chloride AgCl Lithium chloride LiCl Magnesium sulfide MgS Lithium nitride Li 3 N Iron (II) chloride FeCl 2 Tin (IV) bromide SnBr 4 Nickel (III) sulfide Ni 2 S 3 Mercury (I) oxide Hg 2 O Barium sulfide BaS Lead (IV) sulfide PbS 2 Cobalt (III) oxide Co 2 O 3 Move to page Students are to review the directions given in the pop-up information box. They can close the Directions box by selecting. In this part of the activity, students will name the given ionic binary compounds. Q14. How many elements are in binary ionic compounds? What are they? Answer: there are two elements, first one is a metal and second one is a non-metal Q15. For each given formula, record the names of the metal element, non-metal element, and the chemical name of the compound. Check your answer by typing the name of the compound at the cursor next to Type name: Then complete the table below and on the next page Texas Instruments Incorporated 6 education.ti.com
7 Chemical Formula Cation Anion Chemical name MgF 2 magnesium fluorine magnesium fluoride Ba 3 N 2 barium nitrogen barium nitride NaBr sodium bromine sodium bromide LiCl lithium chlorine lithium chloride CaI 2 calcium iodine calcium iodide AlI 3 aluminum iodine aluminum iodide CaO calcium oxygen calcium oxide MgS magnesium sulfur magnesium sulfide Li 2 O lithium oxygen lithium oxide Cs 3 N 2 cesium nitrogen cesium nitride Al 2 O 3 aluminum oxygen aluminum oxide Li 3 N lithium nitrogen lithium nitride Ca 3 N 2 calcium nitrogen calcium nitride Ca 3 P 2 calcium phosphorus calcium phosphide FeCl 2 iron chlorine iron (II) chloride ZnO zinc oxygen zinc (II) oxide MgBr magnesium bromine magnesium bromide SnS tin sulfur tin (II) sulfide SnBr 4 tin bromine tin (IV) bromide Cu 2 O copper oxygen copper (I) oxide 2014 Texas Instruments Incorporated 7 education.ti.com
8 Chemical Formula Cation Anion Chemical name AgBr silver bromine silver (I) bromide Fe 2 S 3 iron sulfur iron (III) sulfide Ni 2 S 3 nickel sulfur nickel (III) sulfide MnBr 2 manganese bromine manganese (II) bromide Na 3 N sodium nitrogen sodium nitride HgO mercury oxygen mercury (II) oxide Hg 2 O mercury oxygen mercury (I) oxide SnO 2 tin oxygen tin (IV) oxide KI potassium iodine potassium iodide K 3 N potassium nitrogen potassium nitride BaS barium sulfur barium sulfide NiO nickel oxygen nickel (II) oxide MgS magnesium sulfur magnesium sulfide AlN aluminum nitrogen aluminum nitride PbS lead sulfur lead (II) sulfide PbS 2 lead sulfur lead (IV) sulfide CdS cadmium sulfur cadmium sulfide Sn 3 N 2 tin nitrogen tin (II) nitride Sr 2 S strontium sulfur strontium sulfide Co 2 O 3 cobalt oxygen cobalt (III) oxide BaH 2 barium hydrogen barium hydride FeI 2 iron iodine iron (II) iodide AgCl silver chlorine silver (I) chloride Tech Tip: The names of compounds should be entered in small case letters with a single space between each word. For transition metals use Roman numerals in parentheses to indicate the charge. Q16. What is the general rule for naming binary chemical compounds? Answer: Write the name of the metal. Write the name of the nonmetal using suffix ide. For transition metals, use Roman numerals in parentheses to indicate the charge Texas Instruments Incorporated 8 education.ti.com
9 TI-Nspire Navigator Opportunities Allow students to volunteer to be the Live Presenter and demonstrate how to type the formula in the ChemBox. Use Quick Poll to check for understanding during the course of the activity. Wrap Up When students are finished with the activity, discuss general rules for writing chemical formulas and naming binary compounds. Collect student worksheets. Assessment Answers to questions are written into the student worksheet. Use QuickPoll to check student work in each part of the activity. Quick Poll could be then saved to Student Portfolio Texas Instruments Incorporated 9 education.ti.com
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
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
Balancing Chemical Equations Practice
Science Objectives Students will describe what reactants and products in a chemical equation mean. Students will explain the difference between coefficients and subscripts in chemical equations. Students
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
Success criteria You should be able to write the correct formula for any ionic compound
Chemical Formulas and Names of Ionic Compounds WHY? Going back to pre-historic times, humans have experimented with chemical processes that helped them to make better tools, pottery and weapons. In the
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
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.
Find a pair of elements in the periodic table with atomic numbers less than 20 that are an exception to the original periodic law.
Example Exercise 6.1 Periodic Law Find the two elements in the fifth row of the periodic table that violate the original periodic law proposed by Mendeleev. Mendeleev proposed that elements be arranged
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
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
47374_04_p25-32.qxd 2/9/07 7:50 AM Page 25. 4 Atoms and Elements
47374_04_p25-32.qxd 2/9/07 7:50 AM Page 25 4 Atoms and Elements 4.1 a. Cu b. Si c. K d. N e. Fe f. Ba g. Pb h. Sr 4.2 a. O b. Li c. S d. Al e. H f. Ne g. Sn h. Au 4.3 a. carbon b. chlorine c. iodine d.
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
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
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
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
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
NET IONIC EQUATIONS. A balanced chemical equation can describe all chemical reactions, an example of such an equation is:
NET IONIC EQUATIONS A balanced chemical equation can describe all chemical reactions, an example of such an equation is: NaCl + AgNO 3 AgCl + NaNO 3 In this case, the simple formulas of the various reactants
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
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.
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.
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
Ionic and Metallic Bonding
Ionic and Metallic Bonding BNDING AND INTERACTINS 71 Ions For students using the Foundation edition, assign problems 1, 3 5, 7 12, 14, 15, 18 20 Essential Understanding Ions form when atoms gain or lose
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).
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
UNIT (2) ATOMS AND ELEMENTS
UNIT (2) ATOMS AND ELEMENTS 2.1 Elements An element is a fundamental substance that cannot be broken down by chemical means into simpler substances. Each element is represented by an abbreviation called
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
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
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
1332 CHAPTER 18 Sample Questions
1332 CHAPTER 18 Sample Questions Couple E 0 Couple E 0 Br 2 (l) + 2e 2Br (aq) +1.06 V AuCl 4 + 3e Au + 4Cl +1.00 V Ag + + e Ag +0.80 V Hg 2+ 2 + 2e 2 Hg +0.79 V Fe 3+ (aq) + e Fe 2+ (aq) +0.77 V Cu 2+
= 11.0 g (assuming 100 washers is exact).
CHAPTER 8 1. 100 washers 0.110 g 1 washer 100. g 1 washer 0.110 g = 11.0 g (assuming 100 washers is exact). = 909 washers 2. The empirical formula is CFH from the structure given. The empirical formula
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
Bonding Practice Problems
NAME 1. When compared to H 2 S, H 2 O has a higher 8. Given the Lewis electron-dot diagram: boiling point because H 2 O contains stronger metallic bonds covalent bonds ionic bonds hydrogen bonds 2. Which
Chapter 2 Atoms, Ions, and the Periodic Table
Chapter 2 Atoms, Ions, and the Periodic Table 2.1 (a) neutron; (b) law of conservation of mass; (c) proton; (d) main-group element; (e) relative atomic mass; (f) mass number; (g) isotope; (h) cation; (i)
CHEMICAL FORMULAS AND FORMULA WEIGHT CALCULATIONS
CHEMICAL FORMULAS AND FORMULA WEIGHT CALCULATIONS 1. THE MEANING OF A CHEMICAL FORMULA A chemical formula is a shorthand method of representing the elements in a compound. The formula shows the formulas
Unit 10A Stoichiometry Notes
Unit 10A Stoichiometry Notes Stoichiometry is a big word for a process that chemist s use to calculate amounts in reactions. It makes use of the coefficient ratio set up by balanced reaction equations
Atomic Structure. Name Mass Charge Location Protons 1 +1 Nucleus Neutrons 1 0 Nucleus Electrons 1/1837-1 Orbit nucleus in outer shells
Atomic Structure called nucleons Name Mass Charge Location Protons 1 +1 Nucleus Neutrons 1 0 Nucleus Electrons 1/1837-1 Orbit nucleus in outer shells The number of protons equals the atomic number This
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
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
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
Periodic Table, Valency and Formula
Periodic Table, Valency and Formula Origins of the Periodic Table Mendelѐѐv in 1869 proposed that a relationship existed between the chemical properties of elements and their atomic masses. He noticed
David A. Katz Chemist, Educator, Science Communicator, and Consultant Department of Chemistry, Pima Community College
WRITING CHEMICAL EQUATIONS 2004, 2002, 1989 by David A. Katz. All rights reserved. Permission for classroom used provided original copyright is included. David A. Katz Chemist, Educator, Science Communicator,
Chemistry Themed. Types of Reactions
Chemistry Themed Types of Reactions 1 2 Chemistry in the Community-2015-2016 Types of Reactions Date In-Class Assignment Homework T 10/20 TEST on Reactivity of Metals and Redox None W 10/21 Late Start
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
Chemistry Post-Enrolment Worksheet
Name: Chemistry Post-Enrolment Worksheet The purpose of this worksheet is to get you to recap some of the fundamental concepts that you studied at GCSE and introduce some of the concepts that will be part
Chapter 11. Electrochemistry Oxidation and Reduction Reactions. Oxidation-Reduction Reactions. Oxidation-Reduction Reactions
Oxidation-Reduction Reactions Chapter 11 Electrochemistry Oxidation and Reduction Reactions An oxidation and reduction reaction occurs in both aqueous solutions and in reactions where substances are burned
Molar Mass Worksheet Answer Key
Molar Mass Worksheet Answer Key Calculate the molar masses of the following chemicals: 1) Cl 2 71 g/mol 2) KOH 56.1 g/mol 3) BeCl 2 80 g/mol 4) FeCl 3 162.3 g/mol 5) BF 3 67.8 g/mol 6) CCl 2 F 2 121 g/mol
EXPERIMENT 8: Activity Series (Single Displacement Reactions)
EPERIMENT 8: Activity Series (Single Displacement Reactions) PURPOSE a) Reactions of metals with acids and salt solutions b) Determine the activity of metals c) Write a balanced molecular equation, complete
(b) Formation of calcium chloride:
Chapter 2: Chemical Compounds and Bonding Section 2.1: Ionic Compounds, pages 22 23 1. An ionic compound combines a metal and a non-metal joined together by an ionic bond. 2. An electrostatic force holds
Name period AP chemistry Unit 2 worksheet Practice problems
Name period AP chemistry Unit 2 worksheet Practice problems 1. What are the SI units for a. Wavelength of light b. frequency of light c. speed of light Meter hertz (s -1 ) m s -1 (m/s) 2. T/F (correct
Ionic Compounds and Metals
Ionic Compounds and Metals Section 7.1 Ion Formation pages 206 209 Section 7.1 Assessment page 209 1. Compare the stability of a lithium atom with that of its ion, Li. The Li + ion is more stable because
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.
CHEMICAL REACTIONS. Chemistry 51 Chapter 6
CHEMICAL REACTIONS A chemical reaction is a rearrangement of atoms in which some of the original bonds are broken and new bonds are formed to give different chemical structures. In a chemical reaction,
Reactions in Aqueous Solution
CHAPTER 7 1. Water is the most universal of all liquids. Water has a relatively large heat capacity and a relatively large liquid range, which means it can absorb the heat liberated by many reactions while
Chapter 2 Atoms, Molecules, and Ions
Chapter 2 Atoms, Molecules, and Ions 1. Methane and ethane are both made up of carbon and hydrogen. In methane, there are 12.0 g of carbon for every 4.00 g of hydrogen, a ration of 3:1 by mass. In ethane,
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
APPENDIX B: EXERCISES
BUILDING CHEMISTRY LABORATORY SESSIONS APPENDIX B: EXERCISES Molecular mass, the mole, and mass percent Relative atomic and molecular mass Relative atomic mass (A r ) is a constant that expresses the ratio
Chapter 8 Atomic Electronic Configurations and Periodicity
Chapter 8 Electron Configurations Page 1 Chapter 8 Atomic Electronic Configurations and Periodicity 8-1. Substances that are weakly attracted to a magnetic field but lose their magnetism when removed from
1. When the following equation is balanced, the coefficient of Al is. Al (s) + H 2 O (l)? Al(OH) 3 (s) + H 2 (g)
1. When the following equation is balanced, the coefficient of Al is. Al (s) + H 2 O (l)? Al(OH) (s) + H 2 (g) A) 1 B) 2 C) 4 D) 5 E) Al (s) + H 2 O (l)? Al(OH) (s) + H 2 (g) Al (s) + H 2 O (l)? Al(OH)
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
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
W1 WORKSHOP ON STOICHIOMETRY
INTRODUCTION W1 WORKSHOP ON STOICHIOMETRY These notes and exercises are designed to introduce you to the basic concepts required to understand a chemical formula or equation. Relative atomic masses of
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
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
Writing and Balancing Chemical Equations
Name Writing and Balancing Chemical Equations Period When a substance undergoes a chemical reaction, chemical bonds are broken and new bonds are formed. This results in one or more new substances, often
7) How many electrons are in the second energy level for an atom of N? A) 5 B) 6 C) 4 D) 8
HOMEWORK CHEM 107 Chapter 3 Compounds Putting Particles Together 3.1 Multiple-Choice 1) How many electrons are in the highest energy level of sulfur? A) 2 B) 4 C) 6 D) 8 2) An atom of phosphorous has how
7.4. Using the Bohr Theory KNOW? Using the Bohr Theory to Describe Atoms and Ions
7.4 Using the Bohr Theory LEARNING TIP Models such as Figures 1 to 4, on pages 218 and 219, help you visualize scientific explanations. As you examine Figures 1 to 4, look back and forth between the diagrams
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
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
Naming Ionic Compounds Answer Key
Naming Ionic Compounds Answer Key Give the name of the following ionic compounds: Name 1) Na 2 CO 3 sodium carbonate 2) NaOH sodium hydroxide 3) MgBr 2 magnesium bromide 4) KCl potassium chloride 5) FeCl
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
Chapter 6 Notes Science 10 Name:
6.1 Types of Chemical Reactions a) Synthesis (A + B AB) Synthesis reactions are also known as reactions. When this occurs two or more reactants (usually elements) join to form a. A + B AB, where A and
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
MOLES AND MOLE CALCULATIONS
35 MOLES ND MOLE CLCULTIONS INTRODUCTION The purpose of this section is to present some methods for calculating both how much of each reactant is used in a chemical reaction, and how much of each product
neutrons are present?
AP Chem Summer Assignment Worksheet #1 Atomic Structure 1. a) For the ion 39 K +, state how many electrons, how many protons, and how many 19 neutrons are present? b) Which of these particles has the smallest
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
Problem Solving. Percentage Composition
Skills Worksheet Problem Solving Percentage Composition Suppose you are working in an industrial laboratory. Your supervisor gives you a bottle containing a white crystalline compound and asks you to determine
Chapter 8: Chemical Equations and Reactions
Chapter 8: Chemical Equations and Reactions I. Describing Chemical Reactions A. A chemical reaction is the process by which one or more substances are changed into one or more different substances. A chemical
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
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.
Electrochemistry - ANSWERS
Electrochemistry - ANSWERS 1. Using a table of standard electrode potentials, predict if the following reactions will occur spontaneously as written. a) Al 3+ + Ni Ni 2+ + Al Al 3+ + 3e - Al E = -1.68
Calculating Atoms, Ions, or Molecules Using Moles
TEKS REVIEW 8B Calculating Atoms, Ions, or Molecules Using Moles TEKS 8B READINESS Use the mole concept to calculate the number of atoms, ions, or molecules in a sample TEKS_TXT of material. Vocabulary
Word Equations and Balancing Equations. Video Notes
Word Equations and Balancing Equations Video Notes In this lesson, you will: Use the law of conservation of mass and provide standard rules for writing and balancing equations. Write and balance equations
2. John Dalton did his research work in which of the following countries? a. France b. Greece c. Russia d. England
CHAPTER 3 1. Which combination of individual and contribution is not correct? a. Antoine Lavoisier - clarified confusion over cause of burning b. John Dalton - proposed atomic theory c. Marie Curie - discovered
UNIT (4) CALCULATIONS AND CHEMICAL REACTIONS
UNIT (4) CALCULATIONS AND CHEMICAL REACTIONS 4.1 Formula Masses Recall that the decimal number written under the symbol of the element in the periodic table is the atomic mass of the element. 1 7 8 12
100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals.
2.21 Ionic Bonding 100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals. Forming ions Metal atoms lose electrons to form +ve ions. Non-metal
Chapter 5. Chemical Reactions and Equations. Introduction. Chapter 5 Topics. 5.1 What is a Chemical Reaction
Introduction Chapter 5 Chemical Reactions and Equations Chemical reactions occur all around us. How do we make sense of these changes? What patterns can we find? 1 2 Copyright The McGraw-Hill Companies,
Electrons in Atoms & Periodic Table Chapter 13 & 14 Assignment & Problem Set
Electrons in Atoms & Periodic Table Name Warm-Ups (Show your work for credit) Date 1. Date 2. Date 3. Date 4. Date 5. Date 6. Date 7. Date 8. Electrons in Atoms & Periodic Table 2 Study Guide: Things You
Sample Exercise 8.1 Magnitudes of Lattice Energies
Sample Exercise 8.1 Magnitudes of Lattice Energies Without consulting Table 8.2, arrange the ionic compounds NaF, CsI, and CaO in order of increasing lattice energy. Analyze From the formulas for three
3. What would you predict for the intensity and binding energy for the 3p orbital for that of sulfur?
PSI AP Chemistry Periodic Trends MC Review Name Periodic Law and the Quantum Model Use the PES spectrum of Phosphorus below to answer questions 1-3. 1. Which peak corresponds to the 1s orbital? (A) 1.06
Ions & Their Charges Worksheet
Ions & Their Charges Worksheet Name Date Teacher Diagram of charges based on groups on the periodic table including transition metals and noble gases: IA IIA Transition IIIA IVA VA VIA VIIA VIIIA metals
Solution. Practice Exercise. Concept Exercise
Example Exercise 9.1 Atomic Mass and Avogadro s Number Refer to the atomic masses in the periodic table inside the front cover of this textbook. State the mass of Avogadro s number of atoms for each of
Chemical Equations and Chemical Reactions. Chapter 8.1
Chemical Equations and Chemical Reactions Chapter 8.1 Objectives List observations that suggest that a chemical reaction has taken place List the requirements for a correctly written chemical equation.
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
OXIDATION REDUCTION. Section I. Cl 2 + 2e. 2. The oxidation number of group II A is always (+) 2.
OXIDATION REDUCTION Section I Example 1: Na Example 2: 2C1 Example 3: K + + e Na + + e Cl 2 + 2e K Example 4: C1 2 + 2e 2Cl 1. The oxidation number of group I A is always (+) 1. 2. The oxidation number
Chapter 4 Chemical Reactions
Chapter 4 Chemical Reactions I) Ions in Aqueous Solution many reactions take place in water form ions in solution aq solution = solute + solvent solute: substance being dissolved and present in lesser
ATOMS A T O M S, I S O T O P E S, A N D I O N S. The Academic Support Center @ Daytona State College (Science 120, Page 1 of 39)
ATOMS A T O M S, I S O T O P E S, A N D I O N S The Academic Support Center @ Daytona State College (Science 120, Page 1 of 39) THE ATOM All elements listed on the periodic table are made up of atoms.
Chapter 16: Tests for ions and gases
The position of hydrogen in the reactivity series Hydrogen, although not a metal, is included in the reactivity series because it, like metals, can be displaced from aqueous solution, only this time the
Chapter 8 - Chemical Equations and Reactions
Chapter 8 - Chemical Equations and Reactions 8-1 Describing Chemical Reactions I. Introduction A. Reactants 1. Original substances entering into a chemical rxn B. Products 1. The resulting substances from
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
Transformations: Rotations
Math Objectives Students will identify a rotation as an isometry, also called a congruence transformation. Students will identify which properties (side length, angle measure, perimeter, area, and orientation)