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18 Cards in this Set
- Front
- Back
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Atom
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a small particle that most types of matter are made of
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Atomic Mass
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the weighted average mass of the isotopes of an element
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Atomic Number
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it tells you the number of protons in the nucleus in each atom
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Compound
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a substance whose smallest unit is made up of atoms more than one element bonded together
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Electron
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invisible negatively charged particles
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Element
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a matter made of only one kind of atom
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Isotope
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the atoms of the same element that have different numbers of neutrons
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Law of Conservation of Matter
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matter is not created or destroyed, it only changes form
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Mass Number
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the number of protons plus the number of neutrons
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Matter
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anything that has mass and takes up space
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Metal
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an element that is malleable, ductile a good conductor of electricity and generally has a shiny or metallic luster
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Metalloid
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an element that has characteristics of metals and non-metals
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Mixture
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a combination of compounds and elements that has not formed any substance and whose proportions can be changed without changing its identity
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Neutron
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uncharged particles
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Non-metal
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an element that is usually dull in appearance and are usually poor conductors of heat and electricity.
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Nucleus
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the central part of the atom
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Proton
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positively charged particles in the nucleus
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Substance
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matter that has the same composition and properties throughout.
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