Across
- 1. to be changed from a solid to a liquid state especially by the application of heat
- 4. to consume fuel and give off heat, light, and gases
- 7. substance transitions directly from a solid state to a gas state without becoming a liquid first
- 8. process by which dead organic substances are broken down into simpler organic or inorganic matter
- 13. to cause (vapor) to condense and fall or deposit
- 15. fuel reacts with oxygen to release energy, typically in the form of heat and light
- 17. separation or opening of a physical object into two or more portions
- 19. matter passed off into vapor
- 20. physical change where a material is cut or torn into small pieces
Down
- 2. a state of matter that has a definite volume, but no fixed shape
- 3. to change from a liquid to a vapor by the application of heat
- 5. resulting from a chemical reaction known as oxidation
- 6. plants, algae, and some bacteria convert light energy
- 9. to combine or blend into one mass or mixture
- 10. reducing a gas or vapor to a liquid or solid form.
- 11. process of separating chemical bonds between atoms in reactants
- 12. gas transforms directly into a solid without becoming a liquid first
- 14. natural process of chemical or electrochemical reaction that deteriorates materials, especially metals
- 16. to pass from the liquid to the solid state by loss of heat
- 18. a gas is a state of matter with particles that have no fixed shape or volume