Across
- 3. Sates that energy cannot be created or destroyed, only changes form
- 8. Uses chemical symbols and numbers to represent a given substance
- 9. The process in which atoms are rearranged to produce new substances
Down
- 1. States that matter is neither created nor destroyed
- 2. A chemical reaction in which energy is released to the surroundings
- 4. A chemical reaction that requires an input of energy
- 5. Substances that participate in a chemical reaction, their chemical formula is on the left
- 6. Substances formed in a reaction, their chemical formulas are on the right
- 7. An expression that uses symbols to show the relationship between the starting substances and the substances that are produced by chemical reaction