9C chemistry 2nd midterm review 1 | Baamboozle - Baamboozle

Name 4 factors that affect the rate of reaction.

Temperature, concentration, pressure(gas), particle size/surface area, catalysts

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To break bonds, energy is _____________. The process is _____________(exothermic/endothermic).

absorbed, endothermic

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What type of reaction is shown by the energy profile diagram?

exothermic reaction

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A _____________ is a substance that changes the rate of a chemical reaction and is chemically unchanged at the end of the reaction.

catalyst

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seesaw

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gift

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fairy

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banana

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If the sign of enthalpy change is NEGATIVE, the reaction is ___________.

exothermic

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The minimum amount of energy required for a reaction to occur is called the __________ __________.

activation energy

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heart

Other team wins 20 points!

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rocket

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gift

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banana

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trap

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magnet

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gift

Win 15 points!

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baam

Lose 10 points!

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Which reaction might have been performed: i) at a higher temperature with dilute reactants? ii)used the greatest amount of reactants? iii)used the dilute reactants?

i)B ii)A iii)C

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When the temperature is increased, the chemical reaction time is ___________.

shortened/decreased

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If the sign of enthalpy change is NEGATIVE, the reaction is ___________.

exothermic

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In an exothermic reaction, the energy released on forming new bonds is _____________ than that needed to break the old bonds.

greater

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For a reaction of X +Y -------> Z, which curve indicates the reactants and which curve shows the products?

Blue curve(products), red curve(reactants)

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A reaction that absorbs energy from the surroundings is an ___________ reaction.

endothermic

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Why does breaking up solid reactants into smaller pieces increase the rate of reaction?

it increases the surface area of the reactants

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