Across
- 1. a chemical change in which one element replaces a second element in a compound
- 6. substance that speeds up the rate of a chemical reaction
- 8. a way of using the formulas to indicate the chemicals that were involved in the chemical reaction
- 10. an ionic equation that includes only the particles that participate in the reaction
- 11. a chemical change that involves an exchange of positive ions between two compounds
- 12. a chemical change in which two or more substances react to form a single new substance
- 13. a chemical equation in which mass is conserved; each side of the equation has the same number of atoms of each element
- 14. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
Down
- 2. an equation that shows dissolved ionic compounds as dissociated free ions
- 3. a reaction in which a single compound breaks down to form two or more simpler substances
- 4. a way to describe a chemical reaction using chemical formulas and other symbols
- 5. ions that do not participate in a reaction
- 7. a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light
- 9. a list of elements in order of decreasing reactivity