1. Chapter 9 Whiteboard Review

2. List the 5 types of reactions.
Then, beside each reaction type answer the 3 questions that follow:
Where does the energy go? (reactants, products, both)
Exothermic or endothermic?
Spontaneous or nonspontaneous?

3. Synthesis – Products, Exo, Spontaneous
Decomp – Reactants, Endo, Nonspont
Single Replacement – (if it is not a NR) – Products, Exo, Spontaneous
Double Rep – Products, Exo, Spont
Combustion – Both, Exo, Nonspont

4. Write an explanation of how to use the Activity Series and for what type of reactions do you use the activity series for?

5. If the lone element is higher on the activity series than the one it is trying to replace in the compound, this reaction will take place (exo, spontaneous). If the lone element is lower on the activity series than the element it is trying to replace, this would be a no reaction OR would require energy in the reactants to make the reaction happen (endo, nonspont).

6. How would you identify a decomposition reaction?
Do all decomposition reactions just break apart into the individual elements?
What happens to H2CO3 every single time it is created?

7. Decomposition reactions always begin with just one compound in reactants.
No, every time you write Decomposition as the reaction type, check the 6 types of decomp reactions on your periodic table reference.
H2CO3 immediately becomes H2O (l) + CO2 (g). (including in double reps)

8. Explain a double replacement reaction that is a No Reaction versus one that is a reaction.
Explain a net ionic equation. What reactants and products look like, etc.

9. Double replacement that is no reaction has all reactants and products that are designated as aqueous in solution. All spectator ions.
Net ionic equation: Reactants are all the non-spectator ions. Products are the compounds that have the phase states of solid, liquid, and gas. No aqueous involved.

10. What is a chemical reaction?
A. The process by which the atoms of one or more substances are
rearranged to form different substances.
B. Matter can neither be created nor destroyed.
C. The physical properties of substances are changed but not their composition.
D. A statement of chemical change using chemical formulas and a notation system.

11. What is a chemical reaction?
A. The process by which the atoms of one or more substances are
rearranged to form different substances.
B. Matter can neither be created nor destroyed.
C. The physical properties of substances are changed but not their composition.
D. A statement of chemical change using chemical formulas and a notation system.

12. Define the products in a chemical reaction:
A. Substances in a chemical reaction with covalent bonds.
B. Substances that go through physical change in a chemical reaction.
C. The substances formed in a chemical reaction.
D. The starting substances of a chemical reaction.

13. Define the products in a chemical reaction:
A. Substances in a chemical reaction with covalent bonds.
B. Substances that go through physical change in a chemical reaction.
C. The substances formed in a chemical reaction.
D. The starting substances of a chemical reaction.

14. Which of the following is NOT a chemical reaction?
A. A piece of wood burning.
B. A car rusting.
C. An ice cube melting into water.
D. Red litmus paper turning blue (pH)

15. Which of the following is NOT a chemical reaction?
A. A piece of wood burning.
B. A car rusting.
C. An ice cube melting into water.
D. Red litmus paper turning blue (pH)

16. The correct evidence that a chemical reaction is taking place in a campfire.
A. Light and heat are given off; gas is released.
B. The reactants (wood) are changed into a new substance (ash).
C. The reaction is not reversible: ash cannot be turned back into wood.
D. All of the above.

17. The correct evidence that a chemical reaction is taking place in a campfire.
A. Light and heat are given off; gas is released.
B. The reactants (wood) are changed into a new substance (ash).
C. The reaction is not reversible: ash cannot be turned back into wood.
D. All of the above.

18. In this is equation, which are the reactant(s) ?
A + B  C
A. A only.
B. B only.
C. C only.
D. A and B.
E. A and C.

19. In this is equation, which are the reactant(s) ?
A + B  C
A. A only.
B. B only.
C. C only.
D. A and B.
E. A and C.

20. In a chemical equation, (aq) after one of the substances means that it is
which of these?
A. A solid formed from two ionic substances.
B. Dissolved in water.
C. Released as gas.
D. The compound is a liquid at room temperature.

21. In a chemical equation, (aq) after one of the substances means that it is
which of these?
A. A solid formed from two ionic substances.
B. Dissolved in water.
C. Released as gas.
D. The compound is a liquid at room temperature.

22. What is the PROBLEM with the chemical equation,
2Al(s) + 6Br(l)  2AlBr3(s)?
A. The subscript on the bromine in the product should be 6.
B. Elemental bromine is Br2 so the coefficient should be 3.
C. Aluminum is a 2+ cation so the product should be AlBr 2 .
D. Elemental aluminum is normally a liquid at room temperature (l).

23. What is the PROBLEM with the chemical equation,
2Al(s) + 6Br(l)  2AlBr3(s)?
A. The subscript on the bromine in the product should be 6.
B. Elemental bromine is Br2 so the coefficient should be 3.
C. Aluminum is a 2+ cation so the product should be AlBr 2 .
D. Elemental aluminum is normally a liquid at room temperature (l).

24. Cl2 + Al  AlCl3
What is the correct ratio of coefficients to balance this chemical equation?
A. 1 : 2 : 3
B : 1 : 1
C. 3 : 2 : 2
D. 1 : 1 : 1

25. Cl2 + Al  AlCl3
What is the correct ratio of coefficients to balance this chemical equation?
A. 1 : 2 : 3
B : 1 : 1
C. 3 : 2 : 2
D. 1 : 1 : 1

26. What are the correct coefficients when this equation is balanced?
Sb + O2 --> Sb 4O6
A. 1, 2, 10
B. 4, 6, 1
C. 10, 5, 1
D. 4, 3, 1

27. What are the correct coefficients when this equation is balanced?
Sb + O2 --> Sb 4O6
A. 1, 2, 10
B. 4, 6, 1
C. 10, 5, 1
D. 4, 3, 1

28. What is wrong with this balanced chemical equation?
4 NH4Cl Na2O  2 (NH4)2O + 4 NaCl
A. NH4 in the one of the reactants should be in brackets.
B. The equation is NOT balanced.
C. The equation does not have the lowest whole-number ratio of coefficients.
D. None of the above.

29. What is wrong with this balanced chemical equation?
4 NH4Cl Na2O  2 (NH4)2O + 4 NaCl
A. NH4 in the one of the reactants should be in brackets.
B. The equation is NOT balanced.
C. The equation does not have the lowest whole-number ratio of coefficients.
D. None of the above.

30. A. Zn + 2 HCl  ZnCl2 + H2 B. Cu + 2 HCl  CuCl2 + H2
Use your activity series to predict which reaction will not occur spontaneously.
A. Zn + 2 HCl  ZnCl2 + H2
B. Cu + 2 HCl  CuCl2 + H2
C. 2 Al + 6 HCl  2 AlCl3 + 3 H2
D. Ca + 2 HCl  CaCl2 + H2

31. A. Zn + 2 HCl  ZnCl2 + H2 B. Cu + 2 HCl  CuCl2 + H2
Use your activity series to predict which reaction will not occur spontaneously.
A. Zn + 2 HCl  ZnCl2 + H2
B. Cu + 2 HCl  CuCl2 + H2
C. 2 Al + 6 HCl  2 AlCl3 + 3 H2
D. Ca + 2 HCl  CaCl2 + H2

32. Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
A. decomposition
B. double replacement
C. synthesis
D. combustion

33. Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
A. decomposition
B. double replacement
C. synthesis
D. combustion

34. Which is the product of this reaction?
Mg + N 2 -->?
A. NMg
B. MgN
C. Mg 2 N 3
D. Mg 3 N 2

35. Which is the product of this reaction?
Mg + N 2 -->?
A. NMg
B. MgN
C. Mg 2 N 3
D. Mg 3 N 2

36. Which are the product(s) of this chemical reaction?
FeCl NH 4 OH -->?
A. Fe(OH) 3 + NH 4 Cl
B. NH 4 Fe + Cl 3 OH
C. NCl 3 + FeOH 5
D. FeCl 3 NOH 4

37. Which are the product(s) of this chemical reaction?
FeCl NH 4 OH -->?
A. Fe(OH) 3 + NH 4 Cl
B. NH 4 Fe + Cl 3 OH
C. NCl 3 + FeOH 5
D. FeCl 3 NOH 4

38. Which is NOT a sign that a double displacement reaction has occurred?
A. gas may be formed
B. water may be produced
C. a precipitate is formed
D. the coefficients are equal

39. Which is NOT a sign that a double displacement reaction has occurred?
A. gas may be formed
B. water may be produced
C. a precipitate is formed
D. the coefficients are equal

40. Identify the type of chemical reaction demonstrated by this equation:
KClO 3 --> KCl + O 2
A. decomposition
B. synthesis
C. combustion
D. single replacement

41. Identify the type of chemical reaction demonstrated by this equation:
KClO 3 --> KCl + O 2
A. decomposition
B. synthesis
C. combustion
D. single replacement