Across
- 3. - substance that cannot be broken down into simpler substances
- 7. - substance that is made of two or more different elements
- 8. – moving the particles around increases the exposure of reactants to one another
- 11. – substance that affects the reaction rate without being used up in the reaction
- 13. – energy is absorbed (in)
- 15. - substance that goes through a chemical change
- 17. – energy is released (out)
- 18. – this looks like reactants are “more crowded” together
- 19. – a mixture’s ingredients are so evenly distributed that it’s difficult to distinguish one ingredient from another
Down
- 1. - properties can vary because the composition is not fixed (can change)
- 2. – how fast reactants turn to products
- 4. – energy stored in the chemical bonds of a substance
- 5. - matter with exactly the same composition throughout
- 6. – increasing this will increase the exposure of reactants to one another
- 9. – raising this will make particles to move faster and collide more often
- 10. – a substance that is the result of a chemical change
- 12. - heterogeneous mixture that separates into layers over time
- 14. - the mixture has parts that are noticeably different from one another
- 16. - when substances dissolve and form a homogeneous mixture