ISLAMIYA ENGLISH SCHOOL PHYSICS: END-OF-CHAPTER 10 TEST t Name __________________________________ _ Date _____________ End-of-chapter 10 test 1 [1] What happens at the time when a solid melts? Choose one answer. A Energy is supplied and the temperature increases. B No energy is supplied and the temperature increases. C Energy is supplied and there is no change in temperature. D No energy is supplied and there is no change in temperature. 2 A learner compares the expansion of a solid, a liquid and a gas at constant pressure. Each substance is heated to give the same temperature increase. All other variables remain constant. [1] Which of these describes the results? Choose one answer. A The solid expands the most and the liquid expands the least. B The liquid expands the most and the gas expands the least. C The gas expands the most and the solid expands the least. D All three substances expand by the same amount. 3 a When heated to give the same temperature increase, copper expands more than steel. The figure shows a bimetallic strip. The strip consists of a layer of copper attached to a layer of steel. The two metals cannot move past each other. Cambridge IGCSE™ Physics – Smyth © Cambridge University Press 2021 1 ISLAMIYA ENGLISH SCHOOL PHYSICS: END-OF-CHAPTER 10 TEST The end of the strip labelled A is fixed. The end of the strip labelled B is free to move. [1] Draw an arrow on the figure to show the direction that end B will move when the strip is heated. Cambridge IGCSE™ Physics – Smyth © Cambridge University Press 2021 2 ISLAMIYA ENGLISH SCHOOL PHYSICS: END-OF-CHAPTER 10 TEST b The bimetallic strip is an example of where thermal expansion is useful. Give one other example of where thermal expansion is useful and one example of where thermal expansion is not useful. [2] Useful _________________________________________________________________________ Not useful ______________________________________________________________________ [Total: 3] 4 a State the i boiling point of water at atmospheric pressure _______________ [1] ii freezing point of water at atmospheric pressure _______________ [1] [2] b List two differences between evaporation and boiling. 1 _____________________________________________________________________________ _______________________________________________________________________________ 2 _____________________________________________________________________________ _______________________________________________________________________________ Cambridge IGCSE™ Physics – Smyth © Cambridge University Press 2021 3 ISLAMIYA ENGLISH SCHOOL PHYSICS: END-OF-CHAPTER 10 TEST c On the axes provided, sketch a graph to show the temperature changes that happen when energy is supplied so that: ice at –20 °C is heated until it melts the melted ice is heated until it boils the water vapour is heated. [2] Draw only one continuous line. [Total: 6] 5 Water has a specific heat capacity of 4200 J/kg/°C. a [2] Explain what this statement means. _______________________________________________________________________________ _______________________________________________________________________________ [3] b Calculate the temperature change produced when 0.35 kg of water is heated using 9600 J. _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ Cambridge IGCSE™ Physics – Smyth © Cambridge University Press 2021 4 ISLAMIYA ENGLISH SCHOOL PHYSICS: END-OF-CHAPTER 10 TEST [Total: 5] 6 Information is given for some substances. Specific heat capacity of water 4200 J/kg/°C To completely evaporate 1 kg of water requires 2 260 000 J of thermal energy Specific heat capacity of concrete 1000 J/kg/°C An outdoor swimming pool contains 20 000 kg of water. The swimming pool is surrounded by a concrete path. The water in the swimming pool is heated only by the Sun. Use the information to answer these questions. a Explain why the concrete path is at a higher temperature than the water in the swimming pool on a sunny day. [2] _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ [2] b Explain why the water in the swimming pool will not all evaporate on a sunny day. _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ [Total: 4] [Total: 20 marks] END OF TEST Cambridge IGCSE™ Physics – Smyth © Cambridge University Press 2021 5