| A | B |
|---|
| element | One of more than 100 basic kinds of matter that cannot be broken into smaller peices through physical or chemical processes |
| physical property | any property of a material that can be seen or measured without changing the material |
| chemical property | any property of a material that describes how it changes into other materials |
| atom | the smallest particle of an element with the same properties of the element |
| atomic number | the number of protons in the nucleus of an atom; the single most important property of an element |
| molecule | the smallest part of a substance made from more that one atom that still has the properties of that substance |
| compound | a kind of matter made of a chemcial combination of two or more elements |
| solution | a mixture in which substances are spread out evenly and will not settle |
