Across
- 5. A physical combination of two or more substances that do not produce a chemical reaction
- 7. A negatively charged subatomic particle
- 8. A mirror that is curved inward in the middle
- 12. The process where a substance burns in the presence of Oxygen, giving off heat and light in the process
- 14. The third layer of the atmosphere, directly above the stratosphere and directly below the thermosphere
- 15. The movement of molecules from a region of higher concentration to a region of lower concentration
- 16. When a ray of light approaches a smooth polished surface and the light ray bounces back
- 17. The capacity of a material to be stretched and drawn into a wire, hammered thin or stretched, without breaking
- 19. The change in direction of a wave passing from one medium to another caused by its change in speed
- 20. A image defined as the opposite of a real image
- 21. The conversion of a liquid to its vapor below the boiling temperature of the liquid
Down
- 1. The ability of a substance, usually a metal, to be deformed or molded into a different shape
- 2. The process of separating suspended solid matter from a liquid
- 3. The process of separating components of a mixture based on different boiling points
- 4. The outermost layer of Earth
- 6. The transition from the solid phase to the gas phase without passing through an intermediate liquid phase
- 9. The change in the state of matter from the gas phase to the liquid phase
- 10. A subatomic particle found in the nucleus of every atom
- 11. The process by which a liquid turns into a vapor when it is heated to its boiling point
- 12. A mirror has a reflective surface that curves outward
- 13. A substance or condition that contaminates air, water, or soil
- 18. Type of an image that is formed by the actual convergence of light rays