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atoms and electrons
Term | Definition |
---|---|
matter | Everything that has mass and takes up space |
atom | the basic unit of a chemical element |
electron | particle with a charge of negative electricity |
proton | particle with positive charge |
neutron | particle with a neutral charge |
periodic table | large grid that classifies elements into groups and periods by their atomic number |
element | A chemical element is a substance that cannot be broken down by chemical means. |