Across
- 3. atoms rearrange to from new substances.
- 7. the cells in your body contain thousands of biological catalyst called?
- 8. a way to show a chemical reaction using symbols.
- 10. the minimum amount of energy needed to start a chemical reaction.
- 11. a material used to decrease the rate of chemical reaction is an?
- 14. the new substance that is formed from the chemical change.
- 15. increases the reaction rate by lowering the activation energy needed.
- 16. the mixing of two liquids.
- 17. a number placed in front of the chemical formula.
- 18. when two or more compounds combine it creates?
Down
- 1. when more energy is required to break the bond it creates a?
- 2. substances that undergo the chemical change.
- 4. this states that matter is not created or destroyed.
- 5. when two elements in different compounds trade places.
- 6. when the energy released is stronger than the energy required to break the bonds it creates a?
- 9. the amount of substance in a given volume.
- 12. when compounds break down into simpler products.
- 13. any change that alters the form or appearance of a substance but does not change into another substance.