Across
- 5. a reactant in a chemical reaction undergoes a change and becomes this
- 7. The change of state from gas to liquid
- 9. for something to become a gas it must be heated past its __________ point
- 11. when a liquid turns straight into gas/vapor form
- 12. Changes in state are often __________
- 13. The change of state from a solid straight to a gas
Down
- 1. the change in state from gas to solid
- 2. have a definite volume but change shape by flowing
- 3. a reaction in which CO2, water and sunlight turn into Oxygen gas and sugar
- 4. a solid forming in a liquid, a sign of a reaction
- 6. A substance that speeds up a reaction without being consumed
- 8. has a definite volume and shape, the molecules are attached
- 10. a reaction in which oxygen is involved