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The Water Molecule

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