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16 terms

Atom Vocabulary

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atom
the smallest part of an element
atomic
having to do with the atom
meson
particles that hold protons and neutrons together
neutron
the neutral part of the atom on the inside of the atom
decomposition
when the molecules break into smaller particles
quarks
small particles that make up protons and neutrons
compound
a material formed by joining elements
atomic number
number of protons in an element
gluons
holds the quarks together
element
matter made of one kind of material
combination
the action when one atom joins with another to form a new substance
nucleus
the middle of the atom
mass number
the number of protons and neutrons in the nucleus of the atom
proton
the positive part of the atom on the inside of the atom
electron
the negative part of the atom
shells
energy levels where the electrons are found