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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 |