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8th Grade > Science 8, Test, Chapter 2 > Flashcards

Science 8, Test, Chapter 2 Flashcards

0
Q

What is a Synthesis Reaction?

A

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

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1
Q

What is Chemical Reaction?

A

the process by which on or more substances change to produce one or more different substances

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2
Q

What is a Decomposition Reaction?

A

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

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3
Q

What is a Single-displacement Reaction?

A

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

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4
Q

What is a Double-displacement Reaction

A

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

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5
Q

What is an Exothermic Reaction?

A

a reaction in which heat is released to the surroundings

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6
Q

What is a Endothermic Reaction?

A

a chemical reaction that requires heat

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7
Q

What is the Law of Conservation of Energy?

A

the law that states that energy cannot be created nor destroyed but can be changed from one form to another

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8
Q

What is Activation Energy?

A

the minimum amount of energy requires to start a chemical reaction

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9
Q

What is an Inhibitor?

A

a substance that slows down or stops a chemical reaction

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10
Q

What is a Catalyst?

A

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

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11
Q

What is a Precipitate?

A

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

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12
Q

What is a Chemical Formula?

A

a combination of chemical symbols and numbers to represent a substance

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13
Q

What is a Chemical Equation?

A

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

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14
Q

What is a Reactant?

A

a substance or molecule that participates in a chemical reaction

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15
Q

What is a Product?

A

the substance that forms in a chemical reaction

16
Q

What is Activation Energy?

A

the minimum amount of energy needed to start a chemical reaction

17
Q

What is the Law of Conservation of Mass?

A

the law that states that mass cannot the created or destroyed but in ordinary chemical and physical change

18
Q

What is the prefix for 1 atom?

A

mono-

19
Q

What is the prefix for 2 atoms?

A

-di

20
Q

What is the prefix for 3 atoms?

A

-tri

21
Q

What is the prefix for 4 atoms?

A

tetra-

22
Q

Why do chemical equations have to be balanced?

A

Chemical equations must be balanced because the Law of Conservation of Mass that mass cannot be created or destroyed.

8th Grade (32 decks)

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