Quiz Questions (45 questions)
Question 1
The diagram below shows a line graph with temperature on the vertical axis and time on the horizontal axis. The graph has flat sections where the temperature does not change for a short period.
What does this type of graph represent? (1 mark)
Question 2
The diagram below shows a line graph with temperature on the vertical axis and time on the horizontal axis. The graph has flat sections where the temperature does not change for a short period.
What does this type of graph represent? (1 mark)
Question 3
The diagram below shows a line graph with temperature on the vertical axis and time on the horizontal axis. The graph has flat sections where the temperature does not change for a short period.
What does this type of graph represent? (1 mark)
Question 4
The diagram below shows a line graph with temperature on the vertical axis and time on the horizontal axis. The graph has flat sections where the temperature does not change for a short period.
What does this type of graph represent? (1 mark)
Question 5
The diagram below shows a line graph with temperature on the vertical axis and time on the horizontal axis. The graph has flat sections where the temperature does not change for a short period.
What does this type of graph represent? (1 mark)
Question 6
The diagram below shows a line graph with temperature on the vertical axis and time on the horizontal axis. The graph has flat sections where the temperature does not change for a short period.
What does this type of graph represent? (1 mark)
Question 7
The diagram shows two samples: one labeled “clean water” and the other labeled “water with salt.”
Based on the diagram, what is the best definition of an impurity? (1 mark)
Question 8
The diagram shows two samples: one labeled “clean water” and the other labeled “water with salt.”
Based on the diagram, what is the best definition of an impurity? (1 mark)
Question 9
The diagram shows two samples: one labeled “clean water” and the other labeled “water with salt.”
Based on the diagram, what is the best definition of an impurity? (1 mark)
Question 10
The diagram shows two samples: one labeled “clean water” and the other labeled “water with salt.”
Based on the diagram, what is the best definition of an impurity? (1 mark)
Question 11
What is a pure substance? (1 mark)
Question 12
What is a pure substance? (1 mark)
Question 13
What is a pure substance? (1 mark)
Question 14
What is a pure substance? (1 mark)
Question 15
Which of the following best distinguishes between boiling point and melting point of a substance? (1 mark)
Question 16
Which of the following best distinguishes between boiling point and melting point of a substance? (1 mark)
Question 17
Which of the following best distinguishes between boiling point and melting point of a substance? (1 mark)
Question 18
Which one of the following statements best defines an impure substance? (1 mark)
Question 19
Which one of the following statements best defines an impure substance? (1 mark)
Question 20
The graph below represents the heating curve of a substance that starts as a solid below its melting point. Which line segment of the graph represents melting? (1 mark)
Question 21
The graph below represents the heating curve of a substance that starts as a solid below its melting point. Which line segment of the graph represents melting? (1 mark)
Question 22
The graph below represents the heating curve of a substance that starts as a solid below its melting point. Which line segment of the graph represents melting? (1 mark)
Question 23
The graph below represents the heating curve of a substance that starts as a solid below its melting point.
Which line segment of the graph represents melting? (1 mark)
Question 24
The graph below represents the heating curve of a substance that starts as a solid below its melting point.
Which line segment of the graph represents melting? (1 mark)
Question 25
Which of the following statements best explains the effects of impurities on the boiling point and melting point of a substance? (1 mark)
Question 26
Which of the following statements best explains the effects of impurities on the boiling point and melting point of a substance? (1 mark)
Question 27
Which of the following statements best explains the effects of impurities on the boiling point and melting point of a substance? (1 mark)
Question 28
Which of the following statements best explains the effects of impurities on the boiling point and melting point of a substance? (1 mark)
Question 29
Which of the following statements best explains the effects of impurities on the boiling point and melting point of a substance? (1 mark)
Question 30
The heating curve below shows the temperature changes of a pure solid as it is steadily heated until it becomes a gas. The graph includes regions where the substance changes state at constant temperatures.
Based on the diagram, which line segment represents the boiling process, where the substance changes from liquid to gas at a constant temperature? (1 mark)
Question 31
The heating curve below shows the temperature changes of a pure solid as it is steadily heated until it becomes a gas. The graph includes regions where the substance changes state at constant temperatures.
Based on the diagram, which line segment represents the boiling process, where the substance changes from liquid to gas at a constant temperature? (1 mark)
Question 32
The heating curve below shows the temperature changes of a pure solid as it is steadily heated until it becomes a gas. The graph includes regions where the substance changes state at constant temperatures.
Based on the diagram, which line segment represents the boiling process, where the substance changes from liquid to gas at a constant temperature? (1 mark)
Question 33
The heating curve below shows the temperature changes of a pure solid as it is steadily heated until it becomes a gas. The graph includes regions where the substance changes state at constant temperatures.
Based on the diagram, which line segment represents the boiling process, where the substance changes from liquid to gas at a constant temperature? (1 mark)
Question 34
The heating curve below shows the temperature changes of a pure solid as it is steadily heated until it becomes a gas. The graph includes regions where the substance changes state at constant temperatures.
Based on the diagram, which line segment represents the boiling process, where the substance changes from liquid to gas at a constant temperature? (1 mark)
Question 35
The heating curve below shows the temperature of a solid as it is heated. At certain points, the line becomes flat (horizontal), even though heating continues.
What is happening to the substance during the flat sections of the heating curve? (1 mark)
Question 36
The heating curve below shows the temperature of a solid as it is heated. At certain points, the line becomes flat (horizontal), even though heating continues.
What is happening to the substance during the flat sections of the heating curve? (1 mark)
Question 37
The heating curve below shows the temperature of a solid as it is heated. At certain points, the line becomes flat (horizontal), even though heating continues.
What is happening to the substance during the flat sections of the heating curve? (1 mark)
Question 38
The heating curve below shows the temperature of a solid as it is heated. At certain points, the line becomes flat (horizontal), even though heating continues.
What is happening to the substance during the flat sections of the heating curve? (1 mark)
Question 39
The heating curve below shows the temperature of a solid as it is heated. At certain points, the line becomes flat (horizontal), even though heating continues.
What is happening to the substance during the flat sections of the heating curve? (1 mark)
Question 40
The heating curves below show temperature changes as two substances are heated over time. Curve A is for a pure substance and Curve B is for the same substance with impurities. Both curves have flat sections where the substance melts or boils.
Which of the following best describes the effect of impurities on the heating curve? (1 mark)
Question 41
The heating curves below show temperature changes as two substances are heated over time. Curve A is for a pure substance and Curve B is for the same substance with impurities. Both curves have flat sections where the substance melts or boils.
Which of the following best describes the effect of impurities on the heating curve? (1 mark)
Question 42
The heating curves below show temperature changes as two substances are heated over time. Curve A is for a pure substance and Curve B is for the same substance with impurities. Both curves have flat sections where the substance melts or boils.
Which of the following best describes the effect of impurities on the heating curve? (1 mark)
Question 43
The heating curves below show temperature changes as two substances are heated over time. Curve A is for a pure substance and Curve B is for the same substance with impurities. Both curves have flat sections where the substance melts or boils.
Which of the following best describes the effect of impurities on the heating curve? (1 mark)
Question 44
The heating curves below show temperature changes as two substances are heated over time. Curve A is for a pure substance and Curve B is for the same substance with impurities. Both curves have flat sections where the substance melts or boils.
Which of the following best describes the effect of impurities on the heating curve? (1 mark)
Question 45
The heating curves below show temperature changes as two substances are heated over time. Curve A is for a pure substance and Curve B is for the same substance with impurities. Both curves have flat sections where the substance melts or boils.
Which of the following best describes the effect of impurities on the heating curve? (1 mark)
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