Physical Science Vocab 2

2. A term used to describe a material that absorbs and/or reflects light and does not allow light to pass through
5. The amount of space an object or substance occupies.
9. A substance that dissolves another substance
12. A substance that is being dissolved by another substances
13. A term used to describe a material that can be clearly seen through because it allows light waves to pass through in straight lines.
16. A physical property of a solid used to describe its surface.
17. A measure of the acidity or alkalinity of a solution based on a scale from zero to fourteen.
19. The lowest point on a wave.
20. A term used to describ6 a material that cannot be clearly seen through but that allows some light to pass through it.

1. The center region of an atom where protons and neutrons ape located (also the cell structure that contains a cell's genetic material)
3. To force away or apart.
4. To bounce light, sound, or heat off of a surface.
5. The time-rate at which a body changes its position.
6. The relative frequency (high or low) of a sound as perceived by a listener.
7. The force exerted per unit area.
8. The distance between crests of a wave
10. A subatomic particle having a positive charge and which is found in the nucleus of an atom.
11. A measure of how hot or cold a substance is; a measure of the average kinetic energy of the particles of a substance.
14. A particle, object, or system that lacks a net charge.
15. A measure of the force of gravity on an object
18. The distance traveled by an object in a given amount of time.
21. A subatomic particle having zero charge found in the nucleus of an atom.