Molecules Crossword Puzzle
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QUESTIONS LIST:
- oxygen : this element has 8 protons
- water : a compound molecule made of 1 oxygen and 2 hydrogen
- cells : _ are living things that make up organisms. made of atoms
- element : a substance whose atoms all have the same number of protons
- positive : the charge of a proton
- neutral : the charge of a neutron
- compound molecule : a molecule formed with 2 or more atoms of different elements
- elemental molecule : a molecule formed with 2 or more atoms of the same elements
- nucleus : the center of an atom. made of a proton and neutron
- helium : this element has 2 protons
- electron : floats around the nucleus
- smaller : the electrons are _ than protons
- molecule : a group of elements bonded together
- atom : the smallest unit of matter
