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JCMS Chemistry 8
JCMS -Introduction to Atoms
Question | Answer |
---|---|
atom | smallest particle of an element, can't be broken down |
element | substance that can't be broken into other substances by chemical or physical means |
nucleus | tiny central core of the atom |
subatomic particle | particles smaller than the atom that combine to form the atom |
protons | positively charged subatomic particle that determines an elements identity |
electrons | negatively charged subatomic particle that is found outside the nucleus of an atom |
neutrons | a subatomic particle with no charge (NEUTRAL)found in the nucleus of an atom |
nucleus | the dense center of an atom containing the protons and neutrons |
atomic mass | the average mass of an atom protons + neutrons |
atomic number | the number of protons found in the nucleus of an atom |