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14 Cards in this Set
- Front
- Back
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nucleus
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center of the atom which contains protons & neutrons
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compound
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formed by the chemical combination of two or more elements
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proton
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positive charge found in nucleus
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electron
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negative charge found in energy levels
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neutron
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particle found in the nucleus with a neutral charge
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atoms
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basic unit of matter
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element
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pure substance composed of only one type of atom
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covalent
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formed when electrons are shared between atoms
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isotopes
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atoms of the same element that have different numbers of neutrons
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ionic bond
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formed when one or more electrons are transferred from one atom to another
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electron cloud
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space around the nucleus occupied by electrons
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ion
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positively or negatively charged atom formed by gaining or losing of electrons
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van der Waals forces
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slight attraction of oppositely charged particles
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molecule
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smallest unit of a covalent compound
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