1. Chemical Reactions Vocabulary

2. catalyst A ___ is used to start or speed up a reaction.

3. chemical change indicators ____ are fumes / odor, color changes, temperature changes, or the formation of a precipitate

4. coefficient The __ is the only part of an equation you can change to balance them - goes in front of the formulas

5. combustion In a ___ reaction, a fuel is burned in O2 to produce CO2 and H2O.

6. decomposition A ___ reaction is a chemical reaction in which a single compound breaks down into two or more elements or new compounds. AB --> A + B

7. double replacement A ____ reaction is a reaction that involves an exchange of ions between ionic compounds dissolved in water. AB + CD --> AD + CB

8. endothermic ___ a reaction in which heat is absorbed in going from reactants to products. The reactants are at a lower energy state than the products and energy is absorbed in the reaction.

9. exothermic ____is a reaction in which heat is given off (released) when going from reactants to products. The reactants start off at a higher energy state than the products, so energy is released in going from reactants to products.

10. Law of Conservation of Mass The _____ states that mass is neither created nor destroyed in any process - it is conserved.

11. neutralization ___ is the chemical reaction between an acid and a base - products are a salt and water.

12. precipitation reaction A ____ is a reaction where a solid formed from combining two liquids.

13. products The ___ are found on the right side of the equation; what has been made in the reaction.

14. reactants The __ are found on the left side of the equation; the part you started with.

15. redox reaction A ___ is achieved by complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule (aka oxidation and reduction reaction).

16. single replacement A ____ reaction is a reaction in which the atoms of one element replace the atoms of another element in a compound. A + BC --> AC + B

17. synthesis A ___ reaction is a chemical reaction in which two or more substances react to produce a single product. A + B --> AB