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Chem 205 > ch 10 > Flashcards

ch 10 Flashcards

1
Q

phases of matter

A

solids, liquids and gases

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2
Q

solids have

A

the strongest intermolecular forces and a fixed volume shape

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3
Q

liquids have

A

a weaker intermolecular force and takes the shape of the container but not volume

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4
Q

Gases

A

Fills the entire container (volume) takes the shape
Intermolecular forces are very weak
Lowest density of matter
Particles do not interact much with each other

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5
Q

Kinetic molecular theory

A

describes the behaviour of ideal gases

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6
Q

T IS ALWAYS IN

A

K

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7
Q

T (in K)=

A

T (in K)= T(in C + 273.15)

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8
Q

Pressure formula

A

Pressure= Force/Area

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9
Q

How do ideal gases behave?

A

1 ideal gases are in constant, random motion and move in straight lines

2 the volume of a volume gas is considered to be zero

3 They are elastic

4 There are no intermolecular forces (they dont attract or repel each other)

5 Temperature is directly proportional to the average kinetic energy of the gas particle

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10
Q

Any gas behaves ideally in what conditions

A

Any gas behaves ideally in low pressures and high temperatures

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11
Q

What would happen if gases had volume

A

They would be large and have more intermolecular forces to each other. They would react less with the walls and result in a decrease of pressure

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12
Q

What would happen if collisions were not elastic?

A

Over time the particles would hit the walls with less force and there would be a decrease in pressure

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13
Q

SI unit of pressure

A

1 Pa = 1N/m^2

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14
Q

atmospheric pressure

A

1 atm=1bar

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15
Q

avogradro says

A

more particles=larger volume
volume in gas is directly proportional to the number of moles in the gas

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16
Q

Avogadros law

A

Vn=k, where V is the volume of the gas, n is the number of moles of the gas, and k is a proportionality constant.

17
Q

Boyle says

A

higher pressure, smaller volume

18
Q

boyle law

A

P1V1=P2V2
where mols and temperature are constant

19
Q

Charles says

A

The higher the temperature the larger the volume

20
Q

Charles law

A

V₁ / T₁ = V₂ / T₂, where V₁ and T₁ are the initial volume and temperature, respectively. Similarly, V₂ and T₂ are the final values of these gas parameters.

Where mols and pressure are constant

21
Q

All the laws combined gives

A

The ideal gas law
PV=nRT
P=atm
V=L
T=K

Chem 205 (14 decks)

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