Science Vocabulary

4. ,The measure of the average kinetic energy of the particles in a material.
6. The amount of matter in an object.
8. The change in state from a liquid to a gas.
9. Occurs when substances react with oxidizing agents, changing it to a new substance.
10. Energy Energy due to motion.
12. A number placed in front of an element symbol or chemical formula in an equation.
15. The mass per unit volume of a substance.
16. The amount of force per unit area applied to an object’s surface.
19. Occurs when a substance reacts with another substance, changing it to a new substance.
20. A starting substance in a chemical reaction.

1. The ability of a type of matter to burn easily.
2. Matter with a composition that is always the same .
3. potential energy The energy released when atoms form bonds.
5. The amount of space a substance takes up.
7. A substance containing atoms of two or more different elements chemically bonded together.
11. The transfer of thermal energy from a region of higher temperature to a region of lower temperature.
13. A substance that consists of only one kind of atom.
14. A substance produced by a chemical reaction.
17. Two or more atoms that are held together by covalent bonds and act as a unit.
18. A small particle that is the building block of matter.