Molecules Crossword Puzzle

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