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science cards
matter vocabulary
Question | Answer |
---|---|
anything that has mass and takes up space | matter |
a material that cannot be broken down into anything simpler | element |
is the smallest unit of an element that retains the properties of that element | atom |
the center of an atom | nucleus |
are particles with one unit of positive electric charge each | protons |
are particles with no electric charge | nuetrons |
are smaller particles with one unit of electric of negative electric charge each | electrons |
are particles with more than one atom joined togther | molecules |