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Chemistry > Endothermic Ans Exothermic Reactions > Flashcards

Endothermic Ans Exothermic Reactions Flashcards

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1
Q

What is the main difference between endothermic and exothermic reactions?

A

Endothermic reactions absorb heat from their surroundings, while exothermic reactions release heat into their surroundings.

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2
Q

True or False: Endothermic reactions have a positive change in enthalpy.

A

True

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3
Q

Which type of reaction feels cold to the touch?

A

Endothermic reaction

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4
Q

Fill in the blank: Exothermic reactions have a __________ change in enthalpy.

A

Negative

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5
Q

In an endothermic reaction, does the temperature of the surroundings increase or decrease?

A

Decrease

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6
Q

Which type of reaction is photosynthesis?

A

Endothermic reaction

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7
Q

Give an example of an exothermic reaction.

A

Combustion of fuel

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8
Q

During an exothermic reaction, does the system gain or lose heat?

A

System loses heat

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9
Q

What is the sign of the enthalpy change for an exothermic reaction?

A

Negative

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10
Q

Which type of reaction is the formation of bonds?

A

Exothermic reaction

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11
Q

In an endothermic reaction, does the system gain or lose heat?

A

System gains heat

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12
Q

True or False: Exothermic reactions have a negative change in enthalpy.

A

True

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13
Q

What is the sign of the enthalpy change for an endothermic reaction?

A

Positive

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14
Q

What does a positive change in enthalpy indicate for a reaction?

A

Endothermic reaction

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15
Q

Does an exothermic reaction increase or decrease the temperature of the surroundings?

A

Increase

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16
Q

What is the main source of energy for endothermic reactions?

A

Heat from the surroundings

17
Q

Fill in the blank: Endothermic reactions have a __________ change in enthalpy.

A

Positive

18
Q

Which type of reaction is the digestion of food?

A

Exothermic reaction

19
Q

During an endothermic reaction, does the system gain or lose heat?

A

System loses heat

20
Q

True or False: Endothermic reactions feel hot to the touch.

A

False

21
Q

What is the main source of energy for exothermic reactions?

A

Released heat from the reaction

22
Q

Give an example of an endothermic reaction.

A

Melting ice

23
Q

What does a negative change in enthalpy indicate for a reaction?

A

Exothermic reaction

Chemistry (8 decks)

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