Pressure in Gases OALH

Do Now

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1. Define specific heat capacity (1)

The amount of energy required to raise the temperature of one kilogram of the substance by two degrees Celsius.

The amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius.

The amount of energy required to raise the temperature of one gram of the substance by one degree Celsius.

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2. Give the equation that links s.h.c., mass, temperature and energy (1)

change in thermal energy = mass / specific heat capacity × temperature change

change in thermal energy = mass × specific heat capacity / temperature change

change in thermal energy = mass × specific heat capacity × temperature change

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3. Describe the motion of particles in a gas - choose two (1)

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4. What are control variables? (1)

Variables that are kept the same

Variables that are measured

Variables that are changed

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5. Write this number to 3 significant figures 0.004824 (1)

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Challenge - If a graph showed that two variables are directly proportional. What would be two features you could identify on that graph that would show the results were directly proportional?

Key Knowledge - LCWC

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Describe the motion of particles in a gas

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Explain what causes gas pressure

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Explain the relationship between temperature and pressure of a gas

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Explain the relationship between temperature and volume of a gas

1

Explain the relationship between volume and pressure of a gas (Boyle’s Law)

1

Describe the motion of particles in a gas

1

Explain what causes gas pressure

1

Explain the relationship between temperature and pressure of a gas

1

Explain the relationship between temperature and volume of a gas

1

Explain the relationship between volume and pressure of a gas (Boyle’s Law)

Recall Quiz

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A. Which of these describes the relationship between volume and pressure?

1.↓ volume, ↑ pressure

2.↑ volume, ↑ pressure

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B. Which of these describes the relationship between temperature and pressure?

1.↑ temperature, ↑ pressure

2. ↑ temperature, ↓ pressure

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C. Which of these describes the relationship between temperature and volume?

1.↑ temperature, ↑ volume

2.↑ temperature, ↓ volume

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D. Which of these describes Boyle’s Law?

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Application Task – Model
Describe and explain the relationship between temperature and pressure (Just write in the 6 missing words)

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Application Task – we do
Explain why the balloon will expand when the bottle is heated.

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A pair of balloons are blown up and left in two seperate rooms. In one room the temperature is 22^oC and in the second room the temperature in 36^oC. Explain which balloons are more likely to burst. (4)

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A student notices that the pressure in their bike tyres increases on a hot day. Explain why using ideas about gas pressure. (4)

Plenary

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Sketch the graph to show the relationship between - Volume and pressure

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Sketch the graph to show the relationship between - Temperature and pressure

1

Pressure in Gases OALH

1. Define specific heat capacity (1)

2. Give the equation that links s.h.c., mass, temperature and energy (1)

3. Describe the motion of particles in a gas - choose two (1)

4. What are control variables? (1)

5. Write this number to 3 significant figures 0.004824 (1)

Challenge - If a graph showed that two variables are directly proportional. What would be two features you could identify on that graph that would show the results were directly proportional?

Describe the motion of particles in a gas

Explain what causes gas pressure

Explain the relationship between temperature and pressure of a gas

Explain the relationship between temperature and volume of a gas

Explain the relationship between volume and pressure of a gas (Boyle’s Law)

Describe the motion of particles in a gas

Explain what causes gas pressure

Explain the relationship between temperature and pressure of a gas

Explain the relationship between temperature and volume of a gas

Explain the relationship between volume and pressure of a gas (Boyle’s Law)

A. Which of these describes the relationship between volume and pressure?

B. Which of these describes the relationship between temperature and pressure?

C. Which of these describes the relationship between temperature and volume?

D. Which of these describes Boyle’s Law?

Application Task – ModelDescribe and explain the relationship between temperature and pressure (Just write in the 6 missing words)

Application Task – we doExplain why the balloon will expand when the bottle is heated.

A pair of balloons are blown up and left in two seperate rooms. In one room the temperature is 22oC and in the second room the temperature in 36oC. Explain which balloons are more likely to burst. (4)

A student notices that the pressure in their bike tyres increases on a hot day. Explain why using ideas about gas pressure. (4)

Sketch the graph to show the relationship between - Volume and pressure

Sketch the graph to show the relationship between - Temperature and pressure

Sketch the graph to show the relationship between - Temperature and volume

1. Define specific heat capacity (1)

2. Give the equation that links s.h.c., mass, temperature and energy (1)

3. Describe the motion of particles in a gas - choose two (1)

4. What are control variables? (1)

5. Write this number to 3 significant figures 0.004824 (1)

Challenge - If a graph showed that two variables are directly proportional. What would be two features you could identify on that graph that would show the results were directly proportional?

Describe the motion of particles in a gas

Explain what causes gas pressure

Explain the relationship between temperature and pressure of a gas

Explain the relationship between temperature and volume of a gas

Explain the relationship between volume and pressure of a gas (Boyle’s Law)

Describe the motion of particles in a gas

Explain what causes gas pressure

Explain the relationship between temperature and pressure of a gas

Explain the relationship between temperature and volume of a gas

Explain the relationship between volume and pressure of a gas (Boyle’s Law)

A. Which of these describes the relationship between volume and pressure?

B. Which of these describes the relationship between temperature and pressure?

C. Which of these describes the relationship between temperature and volume?

D. Which of these describes Boyle’s Law?

Application Task – ModelDescribe and explain the relationship between temperature and pressure (Just write in the 6 missing words)

Application Task – we doExplain why the balloon will expand when the bottle is heated.

A pair of balloons are blown up and left in two seperate rooms. In one room the temperature is 22oC and in the second room the temperature in 36oC. Explain which balloons are more likely to burst. (4)

A student notices that the pressure in their bike tyres increases on a hot day. Explain why using ideas about gas pressure. (4)

Sketch the graph to show the relationship between - Volume and pressure

Sketch the graph to show the relationship between - Temperature and pressure

Sketch the graph to show the relationship between - Temperature and volume

Application Task – Model
Describe and explain the relationship between temperature and pressure (Just write in the 6 missing words)

Application Task – we do
Explain why the balloon will expand when the bottle is heated.

A pair of balloons are blown up and left in two seperate rooms. In one room the temperature is 22^oC and in the second room the temperature in 36^oC. Explain which balloons are more likely to burst. (4)

Application Task – Model
Describe and explain the relationship between temperature and pressure (Just write in the 6 missing words)

Application Task – we do
Explain why the balloon will expand when the bottle is heated.

A pair of balloons are blown up and left in two seperate rooms. In one room the temperature is 22^oC and in the second room the temperature in 36^oC. Explain which balloons are more likely to burst. (4)