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make (something) more difficult or confusing by causing it to be more complex.

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represent (something) as being larger, greater, better, or worse than it really is.

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provide (a book, newspaper, etc.) with pictures.

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(of an author or company) prepare and issue (a book, journal, piece of music, or other work) for public sale.

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a system of acquiring knowledge through observation and the experimental testing of hypotheses

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A product is a new material formed in a chemical reaction

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a material that has constant composition (is homogeneous) and has consistent properties throughout the sample

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substance that is present at the beginning of a chemical reaction

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in a solution, substance doing the dissolving (substance that dissolves another substance)

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in a solution, the substance being dissolved (present in lesser amount and dissolved by the solvent)

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material that increases the rate of a reaction by lowering the activation energy

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A law that states that matter cannot be created or destroyed during a chemical reaction. The mass of the reactants is equal to the mass of the reactants.

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A chemical reaction in which heat energy is given off

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A chemical reaction in which heat energy is absorbed.

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an insoluble substance that is produced as result of a chemical reaction.

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A mixture that is unevenly mixed

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A mixture that is evenly mixed; also called a solution.

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The physical combination of 2 or more substances; can be separated by physical means.

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a pure substance that is created by 2 or more elements chemically reacting and joining together.

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the change from a solid to gas without entering liquid phase

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a reaction where oxygen combines with another compound to form water and carbon dioxide. Reactions are exothermic (produce heat).

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when one substance mixes with another and dissolves. Example: Salt + Water = Salt Water

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occurs when the original substance changes form into a new substance. Some clues to a chemical reaction may include bubbles, smoke, a strong smell, color change, temperature change, or a sizzling sound.

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something that produces an observable physical change but still retains its original form. Some of these changes may include the appearance or disappearance of a color.

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a change that occurs that causes the identity of the substance to change (chemical reaction)

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a change that occurs without changing the identity of the substance

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act of altering or transforming a substance

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a characteristic of a substance that can be observed ONLY when the identity of the substance is changed

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a characteristic of a substance that can be observed without changing the identity of the substance

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Something that has mass and volume