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12 Cards in this Set
- Front
- Back
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covalent bond
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when 2 stoms combine by sharing electrons.
*Their electron clouds join and the electrons circle both atoms, fulfilling both energy level unstabilities. |
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Why do atoms form bonds?
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because their out energy lvels are not full. (first=2, second=8, third= sometimes 8)
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ionic bond
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when 2 or more atoms lose or gain electrons to have full energy levels (become stable). They donate an electron to another atom, giving themselves and the other atom a charge (since the number of protons and electrons aren't equal) The donation creates a strong bond between the elctrons involved. This is an ionic bond.
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ion
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an atom that has an ionic bond with another and is therefore charged.
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compound
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substance composed of 2 or more atoms of different elements joined by a chemical bond (covalent, ionic, etc.)
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element
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substances composed of one type of atom (depending on the # of protons in the nucleus)
the simplest form...90 naturally occurring ones! |
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atom
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the smallest particle of an element
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electron cloud
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region or space that electronsoccupy while moving around the nucleus
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How is water formed?
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when h2 and o2 react with heat, they speed up and end up colliding w/ more force within the given space. They end up rearrnge after the collision with 2 hydrgens to every one oxygen.
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isotope
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atoms of the same element, but a different amount of neutrons.
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cation
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postively chraged ion
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anion
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negativly charged ion
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