Elements, Subatomic Particles, and Isotopes

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Last updated 6:49 PM on 9/10/26
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13 Terms

1
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Molecule

group of two or more atoms chemically bonded together

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Atom

smallest unit of an element

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Compound

substance made of two or more DIFFERENT elements chemically bonded together

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Element

pure substance made of ONLY one type of atom / multiple of the same atom

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What are protons charge?

+1

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What are protons mass?

1 amu

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What are neutrons charge?

0

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What are neutrons mass?

1 amu

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What are electrons charge?

-1

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What are electrons mass?

.0005 amu

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Isotopes

atoms that have the same # of protons but different # of electrons

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What does the top left hand number stand for on the element?

Mass (# protons + # neutrons)

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What does the bottom left hand number stand for on the element?

atomic # (# protons in the atom)