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The Water Molecule

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Across
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The atoms or molecules vibrate weakly and are rigidly held in place.
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Negatively charged particles which orbit the nucleus in discrete electron shells.
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The tendency of particles of the same substance to stick together.
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Causes adhesion, cohesion, and surface tension
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The transition from a solid to a liquid.
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The smallest units which display all of the properties of the material.
Down
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The atoms or molecules vibrate more rapidly, move farther apart, and are free to move relative to each other.
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H20
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The transition from liquid to gas.
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Chemically-combined compounds formed by two or more atoms.
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The center of the atom consisting of positively charged particles called protons and neutrally charged particles called neutrons.
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The atoms or molecules are highly energetic, move far apart, and are largely independent.