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 in 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 reactants 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 reactoion

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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

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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, a 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

a chemical reaction that requires heat

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14
Q

law of conservation of energy

A

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

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15
Q

activation energy

A

the minimum amount of energy required to start a chemical reaction

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16
Q

inhibitor

A

a substance that slows down or stops a chemical reaction

17
Q

catalyst

A

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