Across
- 5. an equation that shows dissolved ionic compounds as dissociated free ions
- 6. a number placed in front of a chemical symbol or formula
- 9. a representation of chemical reaction
- 10. a chemical change in which one element replaces a second element in a compound
- 11. a chemical change in which a single compound breaks down into two or more simpler products
Down
- 1. a chemical equation that does not indicate the relative amounts of the reactants and products
- 2. which is a chemical change involving an exchange of positive ions between two compounds
- 3. lists elements in order of decreasing reactivity
- 4. a substance that speeds up the reaction but is not used up in the reaction
- 7. a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light
- 8. a chemical change in which two or more substances react to form a single new substance.
