Chemical Change Study Guide

2. In our lava lamp experiment, alka seltzer reacted with this to form bubbles.
4. The two reactants in our candle burning experiment were methane and __________.
5. In a chemical reaction, bonds in the reactants are broken and the atoms rearrange to form new _________.
6. If you place a cover over a burning candle, the flame will go out because you have taken away one of the __________.
8. When our lava lamps stop bubbling, we can add more of this to make it go again.
13. Some chemical reaction will occur at low temperatures, they will just do so at a ________ rate.
14. We represent chemical reactions with __________ equations.
15. True or false: the reaction in the cold water bath will produce less product than the reaction in the hot water bath.

1. Reactions at higher temperature have more of this.
3. The _________ of matter states that atoms can neither be created nor destroyed.
7. In our hot water/cold water bath solutions, calcium carbonate reacted with this to form bubbles.
9. There are this many carbon atoms on each side of the following chemical equation: 2C4H10 + 13O2 ------> 8CO2 + 10H2O.
10. Increasing temperature increases the ________ of the reaction.
11. There is an equal number of atoms on each side of the equation to achieve this.
12. Change of state from a liquid to a gas is an example of this kind of change.