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8 Cards in this Set
- Front
- Back
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Chemisty |
the study of matter and energy |
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atom |
a particle of matter that can not be divided the nucleus is in the center and surrounded by empty space |
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element |
matter that is made of only one kind of atom |
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electron |
negatively charged particles in an atom move randomly through the atom constantly |
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nucleus |
center of the atom has a positive charge |
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proton |
positively charged particles in the nucleus of an atom |
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neutron |
neutrally charged particle in an atom have the same mass as the protons **a neutral atom has the same number of protons and neutrons |
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electron cloud |
the region surrounding the nucleus where the electrons travel |
