C1 - States of Water Flashcards

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1
Q

Describe the arrangement of molecules in solid ice

A

Molecules are close together
Molecules vibrate in a fixed position

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2
Q

Which state of water has molecules that are close together and vibrate in a fixed position?

A

Solid ice

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3
Q

Describe the arrangement of molecules in liquid water

A

Molecules are close together
Molecules can move by sliding past other molecules

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4
Q

Which state of water has molecules that are close together and can move by sliding past other molecules?

A

Liquid water

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5
Q

Describe the arrangement of molecules in gaseous steam

A

Molecules are far apart and able to move freely

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6
Q

Which state of water has molecules that are far apart and able to move freely?

A

Gaseous steam

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7
Q

Describe the strength of the intermolecular forces in solid ice

A

Strong intermolecular forces

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8
Q

Describe the strength of the intermolecular forces in liquid water

A

Weaker than in ice, stronger than in steam

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9
Q

Describe the strength of the intermolecular forces in gaseous steam

A

Almost no intermolecular forces

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10
Q

How is the kinetic energy of molecules related to their temperature?

A

The more kinetic energy molecules have, the higher their temperature

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11
Q

In which state do water molecules have the least energy?

A

Solid ice

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12
Q

In which state do water molecules have the most energy?

A

Gaseous steam

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13
Q

What happens the molecules in solid ice when its temperature is increased?

A

The energy of the molecules increases and they vibrate more quickly

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14
Q

Why doesn’t the temperature of solid ice change when it is melting?

A

All of the energy is being used to break intermolecular forces between the molecules in ice

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15
Q

What happens the molecules in liquid water when its temperature is increased?

A

The energy of the molecules increases and they move around more quickly

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16
Q

Why doesn’t the temperature of liquid water change when it is boiling?

A

All of the energy is being used to break intermolecular forces between the molecules in water

17
Q

What happens the molecules in gaseous steam when its temperature is increased?

A

The energy of the molecules increases and they move around more quickly

18
Q

What is the latent heat of vapourisation?

A

The energy required to boil (vapourise) one kg of water

19
Q

What is the name given to the amount of energy required to boil (vapourise) one kg of water

A

Latent heat of vapourisation