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Chapter 1 Review
Atoms and Molecules
Question | Answer |
---|---|
positively charged particle in the nucleus of an atom | proton |
region surrounding an atom's nucleus where one or more electrons are often found | electron cloud |
negatively charged particle that occupies the space in an atom outside the nucleus | electron |
one or more atoms of an element having the same number of protons but a different number of neutrons | isotope |
region at the center of an atom that contains most of the mass of an atom | nucleus |
an atom that has a charge because it has gained or lost electrons | ion |
the number of protons in the nucleus of an atom of an element | atomic number |
uncharged particle in the nucleus of an atom | neutron |