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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 found | electron cloud |
negatively charged particle the occupies the space in an atom out side 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 |
when you add protons to an element you get a... | new element |
when you add a neutron to an element you get a(n)... | isotope |
when you add an electron to an element you get a... | negative ion |
when you lose an electron to an element you get a... | positive ion |