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Chemistry 103 > Chapter 3 > Flashcards

Chapter 3 Flashcards

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0
Q

change in 9*F to change in *C

A

Change in 5C is equivalent to change in 9F

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1
Q

Absolute zero

A

No molecular motion

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2
Q

C* to F*

A

F= 9F/5C (#C) +32

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3
Q

*F to *C

A

C= 5C/9F (#F -32)

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4
Q

Exothermic energy transfer

A

Heat leaves system

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5
Q

Endothermic energy transfer

A

Heat enters the system

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6
Q

Is blowing up TNT exothermic or endothermic

A

Exothermic

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7
Q

Exothermic or endothermic?

Sweat evaporating when the body is the system?

A

Exothermic

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8
Q

Exothermic or endothermic?

Sweat evaporating when the sweat is the system?

A

Endothermic

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9
Q

What is heat capacity?

A

The amount of E needed to raise the temperature of a substance

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10
Q

1 calorie =______ Joules

A

4.184

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11
Q

The smaller the heat capacity is, the __________ it is to heat it up. I

A

Easier

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12
Q

1 Calorie =__________ calories

A

1000

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13
Q

Exothermic or endothermic?

Change of Q of a system <0

A

Exothermic

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14
Q

Exothermic or endothermic?

Change of Q of a system > 0

A

Endothermic

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15
Q

Q represents

A

Heat

16
Q

M represents

A

Mass

17
Q

C represents

A

Heat capacity

18
Q

Triangle T represents

A

Chang in Temp (final minus initial)

19
Q

What equation is used for E and Heat Capacity equations?

A

Q=MCAT

20
Q

Physical or chemical?

Copper turning green when exposed to air.

A

Chemical

21
Q

Physical or chemical?

Car’s paint fading.

A

Chemical

22
Q

Physical or chemical?

Gasoline evaporating.

A

Physical

23
Q

Physical or chemical?

Rusting of iron

A

Chemical

24
Q

Physical or chemical?

Evaporation of fingernail polish remover

A

Physical

25
Q

Physical or chemical?

Burning of coal

A

Chemical

26
Q

Physical or chemical?

Fading of carpet

A

Chemical

27
Q

Exothermic or endothermic?

Wood burning in a fire.

A

Exothermic

28
Q

Exothermic or endothermic?

Ice melting

A

Endothermic

29
Q

Physical or chemical?

Jewelry being scratched

A

Physical

30
Q

Physical or chemical?

Sulfuric acid burning skin

A

Chemical

31
Q

Physical or chemical?

Hydrogen peroxide bleaching hair

A

Chemical

32
Q

Physical or chemical?

Density relative to other elements

A

Physical

33
Q

Physical or chemical?

Explosion of gunpowder

A

Chemical

34
Q

Physical or chemical?

Melting gold

A

Physical

35
Q

Physical or chemical?

Bubbling when two elements are mixed

A

Chemical

36
Q

Physical or chemical?

Bubbling when boiling water

A

Physical

Chemistry 103 (3 decks)

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