Name: _______________________________
Date: ______________
Chapter 7 - Chemical Reactions Review
Define:
1. Reactants
Period: ______
2. Products
3. Catalyst
4. Coefficient
5. Subscript
6. Law of conservation of mass
7. Synthesis reaction
8. Decomposition reaction
9. Single replacement
10. Double replacement
11. Combustion
12. Endothermic
13. Exothermic
14. Chemical equation
15. Balanced equation
16. Equilibrium reaction
Complete the following statements.
17. A reaction where the temperature is known to be ________________________.
18. A chemical reaction that produces only one product is _____________________.
19. A chemical reaction that starts with only one reactant and forms two products is _____________________.
20. A chemical reaction that absorbs energy is _________________________.
21. The general formula is A + B  AB is knows as _________________________reaction.
22. The arrow in a chemical reaction can mean _______________________, ________________ or
_____________
23. A reaction that starts and ends with two compounds is ______________________________.
24. _________________________ is a substance not used up in a reaction.
25. In a compound energy is contained in the ___________________________.
26. The burning of a candle is an example of a ____________________________ reaction.
27. In order to follow the law of conservation of mass if you start with 98 grams of reactant you should end with
_________________ grams of product.
Identify the type of reaction and balance the following reactions. You MUST show your element inventory.
1. ____P4 +___ Br2  ____ PBr3
Type: _______________________
2. ____Fe
Type: _______________________
____ Cl
____ FeCl
3. ___ AlBr3 + ____ K  ___ KBr + ____Al
Type: _______________________
4. ____H O  _____H O
Type: _______________________
_____O
5. ___ PbBr2 + ____ HCl  ___ HBr + ___ PbCl2
Type: _______________________
6.
Type: _______________________
___ N + ___ H
____NH
7. ____ Na +_____ Br2  _____NaBr
8. ___ AlCl + ___ NaOH
____ Al(OH)
Type: _______________________
____ NaCl
Type: _______________________
9. ___ Na3P + ____ CaF2  ____ NaF + ____ Ca3P2
Type: _______________________
10. ___CH4 + ____ O2  _____ H2O +____ CO2
Type: _______________________