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S8P1 a
distinguish between atoms and molecules
Question | answer |
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atom- | the smallest unit of an element that maintains the properties of that element. |
element- | a substance that cannot be separated or broken into simpler substances by chemical means. |
nucleous | in physcial science, an atoms central region, which is made up of protons and neutrons. |
proton | a subatomic particle that has no charge and that is found in the nucleus of an atom. |
electron | a subatomic particle that has a negative charge. |
atomic number | the number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element. |
neutral | having no overall charge. |
atomic mass | the mass of an atom expressed in atomic mass units. |
neutron | a substance particle that is found in the nucleus of an atom. |
chemical symbol | a one or two letter code that represents an element |