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Chemistry > Unit 8 > Flashcards

Unit 8 Flashcards

1
Q

Solids have __________ and __________.

A

definite form and volume

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2
Q

Liquids have a definite ______.

A

volume

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3
Q

What are the 5 properties of gases?

A

low density, compressibility, expansion, fluidity, diffusion and effusion

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4
Q

the gas form of a molecule, element, or compound is less dense than the _____ or ______ form of that same substance. The particles are _______ ______ which causes them to be less dense.

A

solid or liquid; further apart

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5
Q

Since gas particles are so far apart, they have the ability to be ____________________.

A

compressed into a very small space.

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6
Q

Gases , since they have no definite shape, can ______ when released from a closed container or heated.

A

expand

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7
Q

Gases have the ability to _____ in, out, and around solids and liquids.

A

flow

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8
Q

the normal, everyday mixing of gases

A

diffusion

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9
Q

the rapid escape of a gas from a closed container, as in the case of an aerosol can. Once in the open they then diffuse.

A

effusion

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10
Q

Gases consist of ______________ that are spread very far apart.

A

large numbers of very small particles

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11
Q

Collisions between gas particles are considered to be _______, that is, they hit another gas particle, bounce off, and hit another one and the cycle repeats itself. Energy is not ____.

A

elastic; lost

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12
Q

Gases are in _______, ______, and _______ motion and therefore possess _______ energy.

A

constant, rapid, and random; kinetic

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13
Q

There are no forces of ________ or ________ between gases.

A

attraction or repulsion

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14
Q

The average kinetic energy of a gas is dependent of its _________.

A

temperature

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15
Q

An increase in temperature will increase _______ ______ of the gas molecule.

A

kinetic energy

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16
Q

An ideal gas _________ perfectly to the ________ ________ _______.

A

conforms; Kinetic Molecular Theory

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17
Q

A real gas will ________ from the Kinetic Molecular Theory when certain conditions are present.

A

deviate

18
Q

Real gases do have some ______ ______ at very ____ pressures.

A

attractive forces; high

19
Q

When the temperature is very ___, there will be attraction/repulsion between these particles. (real gases)

A

low

20
Q

Pressure is _____ __ ____ ____ on a space.

A

force per unit area

21
Q

Pressure is currently measured with a _________.

A

barometer

22
Q

Who invented the barometer?

A

Evangelista Torricelli

23
Q

The barometer is a column of _____-filled glass that measures exactly ___ mm at 1 atmosphere.

A

mercury; 760

24
Q

When weather is “fair”, the barometric pressure is said to be “____”, referring to the height of the mercury in the glass tube.

A

high

25
Q

When the weather is not good, it is said to be “___”.

A

low

26
Q

Does pressure change with geography?

A

yes

27
Q

1 atmosphere = ___ mm Hg

A

760

28
Q

1 atmosphere = ____ Torr.

A

760

29
Q

1 atmosphere = _____ in Hg

A

29.92

30
Q

1 atmosphere =______ Pascals

A

101325

31
Q

Standard pressure is equal to _ atmosphere at _℃.

A

1;0

32
Q

What do you add to celsius to convert to Kelvin.

A

273.15

33
Q

When you increase the pressure on a gas, you decrease the volume.

A

Boyle’s law

34
Q

When you increase the temperature on a gas, you increase the volume of that gas.

A

Charles Law

35
Q

When you increase the temperature, you increase pressure as well.

A

Gaye-Lussac’s Law

36
Q

Which law includes pressure, volume, and temperature?

A

Combination Gas Law

37
Q

According to Graham’s Law of Effusion, _____ gases will travel faster than _____ ones, and the _______ it is, the faster it will travel.

A

lighter, heavier; warmer

38
Q

This law is used when you are given a specific amount of a gas, usually in moles or grams.

A

General or Ideal Gas Law

39
Q

With the general or ideal gas law:

  1. P is in _____
  2. V is in _____
  3. N is the # of _____ (grams/molecular weight)
  4. R is a constant = to ______
  5. T is in _____
A
  1. atmospheres
  2. liters
  3. moles
  4. 0.0821 moles/L x atm
  5. Kelvin
40
Q

This law is used when you have a mixture of different gases in one container and you want to find the pressure of the container.

A

Dalton’s Law of Partial Pressure

Chemistry (13 decks)

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