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Midterm Review

Across
A mixture that contains as much dissolved solute at a given temperature.
The change of a state from a a gas to a liquid.
A reaction that absorbs energy.
A small particle in the nucleus of the atom.
Two or more substances that are together in the same place but their atoms are not chemically bonded.
Electrons that are in the highest energy level of an atom and that are involved in chemical bonding.
A change that alters the form or appearance of a material but does not make the substance into another substance.
The ratio of the mass of a substance to its volume.
A mixture that has only a little solute dissolved in it.
A chemical reaction that breaks down compounds into simpler products.
A reaction that releases energy, usually in the form of heat.
A material that slows down the rate of a chemical reaction.
A chemical reaction in which two or more simple substances combine to form new , more complex substances.
Down
A mixture in which particles can be seen and easily separated by settling or filtration.
The temperature at which something begins to melt.
A reaction in which one element replaces another or when two elements on a compound trade places.
A mixture that has a lot of solute dissolved in it.
A substance made of two or more elements chemically combined in a specific ratio or proportion.
The amount of space that matter occupies.
A change in which one or more substances combine or break apart to form new substances.
When a material can be dissolved into a solvent, it is _____.
The minimum amount of energy required to start a chemical reaction.
Anything that has mass and takes up space.
A material that increases the speed of a chemical reaction.
The amount of matter in an object.