| A | B |
|---|
| chemistry | the study of matter and its changes |
| matter | anything that has mass and takes up space |
| properties | characteristics of matter |
| physical property | characteristics of a substance that can be observed or measured without changing the substance |
| chemical property | characteristics that describe how two substances react to produce a new substance |
| solid | has a definite shape and volume |
| liquid | has a definite volume but takes the shape of its container |
| gas | takes the shape and volume of its container |
| phase | state or form of matter |
| condensation | change of a gas into a liquid |
| evaporation | change of a liquid to a gas at the surface of the liquid |
| boiling | a rapid change of a liquid to a gas |
| freezing | change of liquid to a solid |
| melting | change of a solid to a liquid |
| chemical change | a change in which a new substance is formed and cannot be easily changed back |
| physical change | a change in a substance that does not change its identity and is easily changed back |
| element | the smallest particle of a substance that cannot be broken down into simpler substances |
| chemical symbols | shorthand way of writing the names of elements |
| group | a vertical column on the periodic table |
| period | a horizontal row on the periodic table |
| periodic | repeating pattern or something that occurs at regular intervals |
| ductile | can be drawn into a wire |
| malleable | can be hammered into a sheet |
| luster | shine |
| metals | elements to the left of the zig zag line on the periodic table |
| nonmetals | elements to the right of the zig zag line on the periodic table |
| inert gases | also called the noble gases they are not reactive |
