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Physical Science > Chapter 7 Vocab > Flashcards

Chapter 7 Vocab Flashcards

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1
Q

a substance that undergoes change in a chemical reaction

A

reactants

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2
Q

new substances formed as a result of a chemical reaction

A

products

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3
Q

a representation of a chemical reactionin which the reactants and products are expressed as formulas

A

chemical equation

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4
Q

numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product

A

coefficients

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5
Q

an amount of a substance that contains approximately 6.02 x 10^23 particles of the substance

A

mole

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6
Q

the mass of one mole of a substance

A

molar mass

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7
Q

a chemical reaction in which two or more substances react to form a single substance

A

synthesis reaction

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8
Q

a chemical reaction in which a compound breaks down into two or more simpler substances

A

decomposition reaction

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9
Q

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

A

single-replacement reaction

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10
Q

a chemical reaction in which two compounds exchange positive ions nad form two new compounds

A

double-replacement reaction

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11
Q

a chemical reaction in which a substance reacts rapidly with oxygen, often producing heat and light

A

combustion reaction

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12
Q

a chemical reaction in which electrons are transferred from one reactant to the other

A

oxidation-reduction reaction

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13
Q

the energy stored in chemical bonds

A

chemical energy

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14
Q

a chemical reaction that releases energy to its surroundings

A

exothermic reaction

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15
Q

a chemical reaction that absorbs energy from its surroundings

A

endothermic reaction

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16
Q

the rate at which reactants change into products over time

A

reaction rate

17
Q

a substance that affects the rate of a chemical reaction without being used up in the reaction

A

catalyst

18
Q

a state in which the forward and reverse paths of a physical or chemical change take place at the same rate

A

equilibrium

19
Q

a chemical reaction in which the conversion of reactants into products and the conversion of products into reactants happens at the same time

A

reversible reaction

Physical Science (7 decks)

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