Interpreting a heating curve Practice Exercise 1

At which section(s) of the graph below, is there no change in temperature but a change in state? (1 mark)

At which section(s) of the graph below, is there no change in temperature but a change in state? (1 mark)

At which section(s) of the graph below, is there no change in temperature but a change in state? (1 mark)

At which section(s) of the graph below, is there no change in temperature but a change in state? (1 mark)

Compare the changes that occur between A–C and D–F in the heating curve below. In which of these does the substance exist as only one state throughout, and why? (2 marks)

Compare the changes that occur between A–C and D–F in the heating curve below. In which of these does the substance exist as only one state throughout, and why? (2 marks)

Compare the changes that occur between A–C and D–F in the heating curve below. In which of these does the substance exist as only one state throughout, and why? (2 marks)

Compare the changes that occur between A–C and D–F in the heating curve below. In which of these does the substance exist as only one state throughout, and why? (2 marks)

Explain using the heating curve below, what is happening at point D, and why the temperature remains constant from D to E. (2 marks)

Explain using the heating curve below, what is happening at point D, and why the temperature remains constant from D to E. (2 marks)

Explain using the heating curve below, what is happening at point D, and why the temperature remains constant from D to E. (2 marks)

Using the heating curve below, Identify the state of matter between C and D and describe what is happening to the temperature. (2 marks)

Using the heating curve below, Identify the state of matter between C and D and describe what is happening to the temperature. (2 marks)

Using the heating curve below, Identify the state of matter between C and D and describe what is happening to the temperature. (2 marks)

Using the heating curve below, Identify the state of matter between C and D and describe what is happening to the temperature. (2 marks)

In the diagram below, why does the graph have flat sections at B–C and D–E, and what do these sections represent? (2 marks)

In the diagram below, why does the graph have flat sections at B–C and D–E, and what do these sections represent? (2 marks)

In the diagram below, why does the graph have flat sections at B–C and D–E, and what do these sections represent? (2 marks)

In the heating curve below, What physical change is occurring between points E and F, and in what state is the substance? (2 marks)

In the heating curve below, What physical change is occurring between points E and F, and in what state is the substance? (2 marks)

In the heating curve below, What physical change is occurring between points E and F, and in what state is the substance? (2 marks)

Use the heating curve below to answer the question that follows.What happens between points B and C, and why does the temperature remain constant? (2 marks)

Use the heating curve below to answer the question that follows.What happens between points B and C, and why does the temperature remain constant? (2 marks)

Use the heating curve below to answer the question that follows. What happens between points B and C, and why does the temperature remain constant? (2 marks)

Use the heating curve below to answer the question that follows. What happens between points B and C, and why does the temperature remain constant? (2 marks)

What is a change of state, and does it form a new substance? (1 mark)

What is a change of state, and does it form a new substance? (1 mark)

What is a heating curve? (1 mark)

What is a heating curve? (1 mark)

What is a heating curve?  (1 mark)

What is a heating curve?  (1 mark)

What is a heating curve?  (1 mark)

What is a heating curve?  (1 mark)

What is boiling in terms of physical changes? (1 mark)

What is boiling in terms of physical changes? (1 mark)

What is boiling in terms of physical changes? (1 mark)

What is boiling in terms of physical changes? (1 mark)

What is meant by the melting point of a substance? (1 mark)

What is meant by the melting point of a substance? (1 mark)

What is meant by the melting point of a substance? (1 mark)

What is meant by the melting point of a substance? (1 mark)

What is meant by the melting point of a substance? (1 mark)

What is meant by the melting point of a substance? (1 mark)

The diagram below shows a heating curve of a substance. Use it to answer the question that follows.What physical state is the substance in between points A and B, and how do you know? (2 marks)

The diagram below shows a heating curve of a substance. Use it to answer the question that follows.What physical state is the substance in between points A and B, and how do you know? (2 marks)

The diagram below shows a heating curve of a substance. Use it to answer the question that follows.What physical state is the substance in between points A and B, and how do you know? (2 marks)

The diagram below shows a heating curve of a substance. Use it to answer the question that follows.What physical state is the substance in between points A and B, and how do you know? (2 marks)

The diagram below shows a heating curve of a substance. Use it to answer the question that follows. What physical state is the substance in between points A and B, and how do you know? (2 marks)

The diagram below shows a heating curve of a substance. Use it to answer the question that follows. What physical state is the substance in between points A and B, and how do you know? (2 marks)

Which section of the graph shows the fastest rise in temperature, and what does that indicate about energy input and particle state? (2 marks)

Which section of the graph shows the fastest rise in temperature, and what does that indicate about energy input and particle state? (2 marks)

Which section of the graph shows the fastest rise in temperature, and what does that indicate about energy input and particle state? (2 marks)

Which section of the graph shows the fastest rise in temperature, and what does that indicate about energy input and particle state? (2 marks)

Which section of the graph shows the fastest rise in temperature, and what does that indicate about energy input and particle state? (2 marks)

Why does it take longer for the substance to boil (D–E) than to melt (B–C) in the heating curve below? (2 marks)

Why does it take longer for the substance to boil (D–E) than to melt (B–C) in the heating curve below? (2 marks)

Why does it take longer for the substance to boil (D–E) than to melt (B–C) in the heating curve below? (2 marks)

Why does it take longer for the substance to boil (D–E) than to melt (B–C) in the heating curve below? (2 marks)

Why does it take longer for the substance to boil (D–E) than to melt (B–C) in the heating curve below? (2 marks)

What is evaporation, and how is it different from boiling? (1 mark)

What is evaporation, and how is it different from boiling? (1 mark)

What is evaporation, and how is it different from boiling? (1 mark)

What is evaporation, and how is it different from boiling? (1 mark)