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CBB 3.1
Chemical Building Blocks- Ch.3 Sec. 1
Question | Answer |
---|---|
nucleus | the central cor of an atom containing protons and usually neutrons |
proton | a small, positively charged particle in the nucleus of the atom |
neutron | a small particle in the nucleus of the atom with no electrical charge |
electron | a tiny, negatively charged particle that moves around the nucleus of an atom |
atomic number | the number of protons in the nucleus of an atom |
isotope | an atom with the same number of protons and a different number of neutrons from the other atoms of the same element |
mass number | the sum of the protons and neutrons in the nucleus of an atom |
model | in science, a diagram, a mental picture, a mathematical statement, or an object that helps explain ideas about the natural world |