| Term | Definition |
|---|---|
| atom | (noun) a particle that is the smallest basic unit of matter |
| chemical property | (noun) a special characteristic of a substance that describes how it reacts with another substance. |
| compound | (noun) a substance that contains 2 or more different elements chemically bonded together. An example is water. |
| element | (noun) a substance that contains only one kind of atom. There are 92 elements that occur naturally. An example is iron. |
| matter | (noun) anything that has mass and takes up space; anything with mass and volume. |
|
mixture |
(noun) 2 or more substances that have been mixed together, but each substance still has its original characteristics. An
example is mixing Cheerios and paper clips together. |
|
molecule |
(noun) a particle of matter that has 2 or more atoms chemically bonded together. The atoms can be the same or
different. |
| particle | (noun) a tiny bit of something |
|
physical property |
(noun) a special characteristic of a substance that can be observed or measured without changing the substance
(example – color, density, etc.) |
| property | (noun) any special characteristic of a substance that can be used to identify that substance. |
| pure substance | (noun) a substance that contains only one kind of particle. An element and a compound are both pure substances. |
