Across
- 1. the amount of space occupied by a sample of matter.
- 4. the value does not change provided you stick to the units provided.
- 5. The substances which participate in a chemical reaction
- 10. a physical quantity that quantitatively expresses the attribute of hotness or coldness
- 13. a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed to start one.
- 14. any substance that has a defined composition.
- 17. a state in which the rate of the forward reaction equals the rate of the backward reaction.
- 18. Chemical reactions that gain energy
- 19. refers to the amount of a substance in a defined space.
- 20. A theory states that for a chemical reaction to occur, the reacting particles must collide with one another.
Down
- 2. Chemical reactions that release energy
- 3. The amount of force on an object/thing (per unit area)
- 6. a solution in which the solvent is water
- 7. a mixture with a non-uniform composition
- 8. things formed from chemical reactions (reactants reacting)
- 9. a principle of chemistry used to predict the effect of a change in conditions on chemical equilibrium.
- 11. a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products
- 12. a substance that is in a gaseous, or vaporous, state of matter
- 15. a group of atoms bonded together (smallest unit)
- 16. The study of chemical reaction rates