Science Vocab

1. Materials that transfer thermal energy easily.
6. A characteristic of a substance that describes its ability to change into different substances.
7. The reverse of vaporization. It is the change in state from a gas to a liquid.
8. A single kind of matter that is pure, meaning it always has a specific makeup, or composition.
9. Anything that has mass and takes up space.
10. Has a definite volume, but no shape of its own.
13. A characteristic of a substance that can be observed without changing it into another substance.
15. Vaporization that only takes place both below and at the surface of a liquid.
16. A measure of how hot or cold something is.
17. Vaporization that takes place only on the surface of a liquid.
19. Occurs when the surface particles of a solid gain enough energy that they form a gas.
20. The temperature at which water starts to change into steam or vapor.
22. A substance that has no fixed shape and yields easily to external pressure.
23. Has neither a definite shape nor a definite volume.
24. A substance that cannot be broken down into any other substance by chemical or physical means.
25. A substance which does not readily allow the passage of heat.
26. Has a definite shape and a definite volume.

2. The energy stored in chemical bonds between atoms.
3. The change in state from solid to liquid.
4. The study of matter and how it changes.
5. A change in matter which does not alter the chemical properties of the matter.
9. The temperature at which a given solid will melt.
11. The basic particle from which all elements are made.
12. A group of two or more atoms held together by chemical bonds.
14. The change in state from liquid to a gas.
18. Made of two or more substances that are together in the same place.
21. A force of attraction between two atoms.
22. The change of state from liquid to solid