Across
- 2. undergoes change during a reaction
- 5. a principle that states that mass is neither created nor destroyed in chemical reactions
- 7. present at the end of a chemical reaction
- 9. a notation of one or two letters representing a chemical element
- 10. a change in matter that produces a new substance
- 11. a solid formed in a chemical reaction that is different from either of the reactants
Down
- 1. uses symbols and formula to show chemical reactions
- 3. chemical reaction that releases heat to the surrounding environment
- 4. a number placed in front of a chemical symbol or formula
- 6. chemical reaction that absorbs heat from its environment
- 8. a number telling how many atoms are in the molecule or ratio of the element