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8 Cards in this Set
- Front
- Back
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chemistry |
study of mater and energy |
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atom |
a partical of matter that can not be broken down the nucleus is the center and surrounded by empty space can be positive negative or neutral depending on the number of electrons protons and neutrons |
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element |
matter that is made of only one kind of atom substances change by number of atoms |
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electron |
negatively charged partical in an atom move randomly though the atom constantly found in electron cloud |
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proton |
positively charged particles in the nucleus of an atom |
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nuetron |
neutrally charged particle in an atom have same mass as the protons ** an neutral atom has the same number of protons and neutrons |
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nucleus |
center of atom has positive charge contains protons and neutrons |
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electron cloud |
the region surrounding the nucleus where electrons travel |
