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Macy Science
Matter and it's Uses
| Question | Answer |
|---|---|
| model | a useful representation of something that aids in studying the subject further |
| nucleus | the central core of an atom |
| proton | a particle in the nucleus of an atom that has a positive charge |
| neutron | a particle in the nucleus of an atom that has no charge |
| electron | a particle outside the nucleus of an atom that has no charge |
| element | substance that is made of only one particular type of atom and cannot be broken down into simpler substances |
| chemical symbol | one or two letters that represent an elements by their properties |
| periodic table | a chart that arranges all the known elements by their properties |
| molecule | two or more atoms joined together |
| compound | a molecule that consists of two or more different elements |