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25 Cards in this Set
- Front
- Back
What is an atom or a group that has become electrically charged?
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Ion.
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What happens to an atom when it LOSES an electron?
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It gains a negative charge & becomes a POSOTIVE ion.
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What happens to an atom when it GAINS an electron?
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It gains a negative charge & becomes a NEGATIVE ion.
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What is an ionic bond?
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The attraction between two OPPOSITLEY charged ions.
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Why does a sodium atom become more stable when it loses one valace electron?
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Because it has +1 charge and LOSES one and becomes NEUTRAL.
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In an ionic compound, the name of the ________ ion comes first.
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Posotive.
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When does the end of a name of a negative ion become -ide?
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If the negative ion is an element.
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Three charecteristic properties of ionic compounds are-----
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Crystal Shape,
High Melting Points, & Electrical Conductivity. |
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What is an orderly, three dimensional arrangement formed by ions?
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Crystal.
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In an ion, all ions are attracted to-----
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Ions near it that have an opposite charge.
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At room temp, ionic bonds are strong enough to cause ALL compounds to be ______.
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Solids.
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Ionic compounds conduct electricity well when -----
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Ionic compounds dissolve in water.
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DEFINITION-
Covalent bond- |
Chemical bond formed when two atoms share electrons.
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Double Bond-
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A chemical bond formed when atoms share two pairs of electrons.
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Molecular Compounds contain-----
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Molecules having covalently bonded atoms.
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Molecular compounds have a slight electrical charge because-----
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Some atoms pull more strongly on the shared electrons than other atoms do.
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Polar covalent bonds are shared-----
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Unequally.
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Electrons are shared in non polar covalent bonds by-----
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Electrons moving closer to one atom.
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An atom can be non polar when it has polar bonds by-----
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having some of the same properties.
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CHOOSE ONE-
Water molocules (Are/Are not) polar? |
Are.
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Why do polar and non polar molecules have different properties?
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Because they have different charges.
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Water and vegetable oil DON'T mix because-----
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Oil is non polar and non polar doesn't mix well with water.
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A naturally occurring solid that has crystal structure and a definite chemical composition is called a-----
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Mineral.
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All properties of a mineral depends on-----
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Measurements or testing.
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The arrangement of particles in a mineral and the kind of bonds holding them together determines-----
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Mineral properties such as crystal shape, hardness, and the ways the crystals break apart.
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