ch.02 Word Scramble
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Question | Answer |
what is not a subatomic partical? | isotope |
electrons move about within certain limits called? | orbitals |
the number of protons in the nucleus is an atom's? | atomic number |
the number of protons and nuetrons combined is the atom's? | atomic mass |
is not one of the major elements present in the human body? A.oxygen B.carbon C.nitrogen D.iron | iron |
atoms usually unite with each other to form larger chemical units called? | molecules |
substances whose molecules have more than one element in them are called? | compunds |
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