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18 Cards in this Set
- Front
- Back
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Atom |
A small particle that makes up most types of matter on Earth |
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Atomic Mass |
Average mass of an atom of an element |
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Atomic Number |
Tells you the number of protons in the nucleus of each atom of an element |
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Compound |
A pure substance whose smallest unit is made up of atoms of more than one element |
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Electron |
Negatively charged subatomic particle |
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Element |
Matter made up of only one kind of atom |
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Isotope |
Atoms of the same element that have different numbers of neutrons |
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Law of Conservation of Matter |
States that matter is neither created nor destroyed, only changed in form |
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Mass Number |
The sum of an atom"s protons and neutrons |
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Matter |
Anything that has mass and takes up space |
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Metals |
Elements that generally have a shiny or metallic luster |
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Metalloids |
Elements that have characteristics of of both metals and nonmetals |
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Mixtures |
Formed when two or more substances come together but don't combine to form a new substance |
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Neutron |
Uncharged particle in the nucleus of the atom |
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Nonmetals |
Elements that are usually dull in appearance and poor conductors of heat and electricity |
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Nucleus |
Positively charged central part of the atom |
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Proton |
Positively charged particle in the nucleus of the atom |
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Substance |
A sample of matter that has the same composition and properties throughout |
