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Science 8th Grade > Chapter 2 > Flashcards

Chapter 2 Flashcards

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1
Q

Chemical Reaction

A

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

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2
Q

Precipitate

A

A solid that is produced as a result of a chemical reaction solution

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3
Q

Chemical Formula

A

A combination of chemical symbols and numbers to represent a substance

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4
Q

Chemical Equation

A

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

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5
Q

Reactant

A

A substance or molecule that participates in a chemical reaction

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6
Q

Product

A

The substance that forms in a chemical reaction

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7
Q

Law of Conservation of Mass

A

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

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8
Q

Synthesis Reaction

A

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

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9
Q

Decomposition Reaction

A

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

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10
Q

Single-Displacement Reaction

A

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

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11
Q

Double-Displacement Reaction

A

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

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12
Q

Exothermic Reaction

A

A chemical reaction in which heat is released to the surroundings

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13
Q

Endothermic Reaction

A

is a chemical reaction that releases energy by light or heat.

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14
Q

Law of Conservation of Energy

A

is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.

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15
Q

Activation Energy

A

the minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.

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16
Q

Inhibitor

A

a substance that slows down or prevents a particular chemical reaction or other process, or that reduces the activity of a particular reactant, catalyst, or enzyme.

17
Q

Catalyst

A

a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

Science 8th Grade (8 decks)

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