Across
- 3. something that slows down a reaction by increasing the activation energy
- 5. a reaction where substances combine to create a more complex substance
- 6. the amount of a substance relating to the amount of the other substance
- 8. a change that changes something into a different substance
- 10. a system that can be contaminated does not represent the locom
- 11. the rule that mass is neither destroyed nor created
- 12. the thing that are used in a reaction
- 15. a reaction that releases energy
- 16. a number that indicates how many of a substance is present
- 17. the energy required to start a reaction
- 18. combo of numbers and letters that displays a certain chemical
- 19. a change that does not affect the substance that a product is made of only the physical properties
Down
- 1. a system that demonstrates the locom
- 2. something that speeds up a reaction by lowering the activation energy
- 4. a type of chemical reaction here the reactants break down
- 7. a reaction where molecules are replaced by other molecules
- 9. a reaction that requires energy from the surroundings to sustain itself
- 13. a solid made from a liquid
- 14. what is left after a reaction takes place