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Science 8th grade > Chapter 2 Chemical Reactions > Flashcards

Chapter 2 Chemical Reactions Flashcards

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1
Q

The process by which one or more substances change to produce one or more different substances.

A

Chemical Reaction

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2
Q

A solid that is produces as a result of a chemical reaction in solution

A

Precipitate

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3
Q

The color of something

A

Pigment

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4
Q

a green color inside of plants

A

Chlorophyll

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5
Q

A combination of chemical symbols and numbers to represent a substance

A

Chemical Formula

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6
Q

A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products

A

Chemical Equation

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7
Q

A substance or molecule that precipitates in a chemical reaction

A

Reactant

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8
Q

The substance that forms in a chemical reaction

A

Product

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9
Q

The Law that states that mass cannot be created or destroyed in ordinary chemical and physical changes

A

Law of Conservation of Mass

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10
Q

A number written below and two the right of a chemical symbol in a formula

A

Subscript

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11
Q

A number that is placed in front of a chemical symbol or formula.

A

Coefficient

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12
Q

A force that holds two atoms together in a molecule

A

Chemical Bond

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13
Q

A reaction in which two or more substances combine to form a new compound

A

Synthesis Reaction

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14
Q

A reaction in which a single compound breaks down to form two or more simpler substances

A

Decomposition Reaction

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15
Q

A reaction in which one element or radical takes the place of another element or radical in a compund

A

Single-Displacement Reaction

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16
Q

A reaction in which a gas, a solid precipitate, or a molecular compound forms from the exchange of ions between two compounds

A

Double-Displacement Reaction

17
Q

A chemical reaction in which heat is released to the surroundings

A

Exothermic Reaction

18
Q

A chemical reaction that required heat

A

Endothermic Reaction

19
Q

The law that states that energy cannot be created or destroyed but can be changed from one form to another

A

Law of Conservation of Energy

20
Q

The minimum amount of energy required to start a chemical reaction

A

Activation Energy

21
Q

A substance that slows down or stops a chemical reaction

A

Inhibitor

22
Q

A substance that changes the rate of a chemical reaction without being used up or changed very much.

A

Catalyst

23
Q

The speed at which new particles form

A

Rate of a Reaction

24
Q

A measure of the amount of one substance dissolved into another substance

A

Concentration

25
Q

Speed up most reactions in your body

A

Enzymes

26
Q

The amount of exposed surface of a substance

A

Surface Area

Science 8th grade (8 decks)

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