Across
- 2. new substances formed by the reaction
- 3. matter is not allowed to enter or leave
- 4. the ratio of elements in a compound
- 6. a burning candlelight can be an example of _________ _________
- 9. a number placed in front of a chemical formula in an equation
- 10. burning is an example of a _______ _______
- 12. the substances that undergo change in chemical reaction
Down
- 1. photosynthesis is an example of an _________ _________
- 2. a solid that forms from solution during a chemical reaction
- 5. melting is an example of a _______ _______
- 7. matter can enter from or escape to the surroundings
- 8. reactant + reactant → product + product
- 11. the study of matter and how matter changes