two or more of the same atom chemically bonded together
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MOLECULE
two or more non metal atoms chemically bonded together (represented by a formula)
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MIXTURE
different elements or compounds mixed together
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COMPOUND
two or more elements chemically combined together in a fixed ratio
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ATOM
the smallest part of an element that can take part in a chemical reaction
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ATOMIC NUMBER
the number of protons in the nucleus in each atom of the element
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MASS NUMBER
the sum of the number of protons and neutrons in the nucleus of an atom
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ION
a charged atom
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ENERGY SHELLS
located around the nucleus - where electrons are found
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ISOTOPES
atoms of the same element that have the same number of protons but a different number of neutrons. they have the same atomic number but different mass numbers
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PERIOD NUMBER
shows the number of energy levels
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GROUP NUMBER
shows the number of electrons in the outer shell
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Other cards in this set
Card 2
Front
two or more non metal atoms chemically bonded together (represented by a formula)
Back
MOLECULE
Card 3
Front
different elements or compounds mixed together
Back
Card 4
Front
two or more elements chemically combined together in a fixed ratio
Back
Card 5
Front
the smallest part of an element that can take part in a chemical reaction
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