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16 Cards in this Set
- Front
- Back
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chemistry |
study of the basic building blocks of matter |
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matter |
Anything that has mass and takes up space
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chemist |
Scientist who studies how matter relates to other matter |
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atom |
smallest part of matter that cannot be broken down by normal chemical means |
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proton |
positively charged particle in the nucleus of an atom |
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neutron |
electrically neutral particles in the nucleus of an atom |
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electron |
negatively charged particle orbiting the nucleus of an atom |
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nucleus |
tight mass of protons and neutrons in the center of an atom |
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electron energy levels |
the various distances at which an electron orbits the nucleus of an atom |
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valence electrons |
electrons in outermost energy level of an atom |
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atomic number |
number of protons in an atom |
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mass number/atomic mass |
number of protons plus the number of neutrons in an atom |
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molecule |
group of chemically connected atoms |
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atomic mass unit(amu) |
mass of a proton or neutron |
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diatomic molecule |
2 of the same type of atom bonded together |
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compound |
bonding of 2 or more different kinds of atoms |
