Vocabulary Words and Definitions

3. A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
5. The amount of space that a substance or object occupies.
7. Water which collects as droplets on a cold surface when humid air is in contact with it.
8. The degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
9. A body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.
10. The basic unit of a chemical element.
11. A substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape.
12. The SI unit of mass (equivalent to approximately 2.205 lb), first introduced as a unit of mass for the metric system.
15. Continuous physical force exerted on or against an object by something in contact with it.
16. A particular kind of matter with uniform properties.
17. Firm and stable in shape; not liquid or fluid.

1. The degree of compactness of a substance.
2. A tabular array of the chemical elements organized by atomic number.
3. Anything that takes up space and can be weighed.
4. A characteristic of matter that can only be observed and measured by performing a chemical reaction or chemical change.
6. A substance that cannot be broken down into simpler substances by chemical means.
7. The branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.
13. A substance that flows freely but is of constant volume.
14. The measure of the amount of matter in a body.
15. A characteristic of a substance that can be observed or measured without changing the identity of the substance.