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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 |