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Atomic Basics
| Question | Answer |
|---|---|
| matter | anything that has mass and takes up space |
| atom | building block of matter |
| element | substance with only one type of atom |
| proton | positively charged particle |
| neutron | particle with no charge |
| electron | negatively charged particle |
| atomic number | number of protons in an atom |
| atomic mass | number of protons plus neutrons |
| isotopes | atoms of the same element with different numbers of neutrons |
| nucleus | center of an atom; contains protons and neutrons |
| electron cloud | where electrons are found |