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Chemistry > Chapter 10 Review > Flashcards

Chapter 10 Review Flashcards

1
Q

Are gases polar?

A

Gases are nonpolar or slightly polar

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2
Q

Are there many elements that are gases at room temperature?

A

Only a few elements are gases at room temperature

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3
Q

What type of mixture do gases tend to form?

A

Gases tend to form homogeneous mixtures

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4
Q

Are gases very dense?

A

Gases tend to have low densities

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5
Q

Do gases have a definite shape or volume?

A

No, gases don’t have a definite shape or volume

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6
Q

What variables affect Volume?

A

Temperature, pressure, and moles present affect the volume

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7
Q

Is the volume of a container equal to the volume of the gas?

A

Yes, the volume of the gas is equal to the volume of the container

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8
Q

Are gases highly compressible?

A

Yes, gases are highly compressible

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9
Q

When heated, what do gases do?

A

When heated, gases expand

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10
Q

What is a vapor?

A

A vapor is a gas that is a liquid or a solid at room temperature

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11
Q

What causes gas pressure?

A

Molecular collisions cause gas pressure

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12
Q

What is atmospheric pressure?

A

Atmospheric pressure is the pressure exerted by the combined gases above the earth’s surface

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13
Q

Is atmospheric pressure dependent on altitude?

A

Yes, atmospheric pressure is dependent of altitude

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14
Q

One atmospheric pressure is how many mmHg?

A

1 atm = 760 mmHg

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15
Q

How many torr is 1 mmHg?

A

1 mmHg = 1 torr

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16
Q

How many torr is 1 atm?

A

1 atm = 760 torr

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17
Q

How many kPa is 1 atm?

A

1 atm = 101.3 kPa

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18
Q

What is Boyle’s Law?

A

P1V1=P2V2

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19
Q

When pressure INCREASES, does volume INCREASE or DECREASE?

A

When pressure increases, volume DECREASES

20
Q

When pressure DECREASES. does volume INCREASE or DECREASE?

A

When pressure decreases, volume increases

21
Q

What is Charle’s Law?

A

V1/T1 = V2/T2

22
Q

When volume increases, what does temperature do?

A

Temperature increases

23
Q

When volume decreases, what does temperature do?

A

Temperature decreases

24
Q

What must temperature’s unit be?

A

Temperature must be in Kelvin

25
Q

If the temperature of a gas is 0K, does the gas have volume?

A

If the temperature is 0K, the gas has no volume

26
Q

What is Gay-Lussac’s law?

A

P1/T1 = P2/T2

27
Q

As pressure increases, what does temperature do?

A

Temperature increases

28
Q

As pressure decreases, what does temperature do?

A

Temperature decreases

29
Q

Will gases at the same temperature and pressure have the same number of moles?

A

Gases with the same pressure and temperature will have the same number of moles

30
Q

What is Avogadro’s law?

A

V1/n1 = V2/n2

31
Q

As volume increases, does the amount of moles increase or decrease?

A

The number of moles increases

32
Q

As volume decreases, does the amount of moles increase or decrease?

A

The number of moles decreases

33
Q

What is the Combined Gas law?

A

P1V1/n1T1 = P2V2/n2T2

34
Q

What is the ideal gas law?

35
Q

What is R in the ideal gas law?

A

R = 0.08206 Latm/molK

36
Q

When should we use the ideal gas law?

A

When we are given 3 variables and don’t know 1 variable

37
Q

What does the ideal gas law assume?

A

That two atom’s don’t affect each other and the volume of gas particles is negligible

38
Q

What is STP?

A

STP is 273.15K and 1.00atm

39
Q

What is the molar volume of a gas at STP?

40
Q

What is the molar volume of ANY ideal gas at STP?

A

22.414 L/mol

41
Q

What is the density of a gas?

A

d = PM / RT

42
Q

As pressure increases, what does density do?

A

Density increases

43
Q

As temperature increases, what does density do?

A

Density decreases?

44
Q

What is the total pressure of a gas mixture equal to?

A

The partial pressure of each gas present in the mixture

45
Q

To find the partial pressure of a gas in a mixture given the moles of each gas, what does one do?

A

Divide moles of gas by the total moles in the mixture. Multiply that by the total pressure

Chemistry (17 decks)

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