1) basic unit of matter a) atom b) nucleus c) proton 2) consists of protons and neutrons a) atom b) nucleus c) electron 3) has a negative charge (-) a) nucleus b) proton c) electron 4) has a positive charge (+) a) nucleus b) proton c) atom 5) Everything around us is made of a) matter b) air c) space 6) has a neutral charge (no charge) a) neutron b) proton c) electron 7) the number of protons a) atomic number b) mass number c) atomic mass 8) Atoms with the same number of protons but different number of neutrons a) elements b) compounds c) isotopes 9) The sum of protons and neutrons in the nucleus a) atomic number b) mass number c) atomic mass 10) Isotopes have different mass numbers from each other but react the same way a) chemically b) manually

Atom Vocabulary

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