Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
241–250 of 279
Question 241
1 mark · Normal
Answer and check →When a gas is heated at constant pressure, which of the following will increase?
- A.Its density
- B.Its volume
- C.Its mass
- D.Its pressure
Question 242
4 marks · Normal
Answer and see the solution →A student fills a flexible balloon with air and seals it. The pressure inside the balloon is kPa at C. The balloon is then placed in an oven at C and the pressure reaches kPa.
(a)[1 mark]Convert all temperatures to Kelvin.
(b)[3 marks]Use the gas law to calculate the new volume of the balloon if the initial volume was L.
Question 243
3 marks · Normal
Answer and see the solution →Describe how you could investigate the relationship between the pressure and volume of a trapped gas in a school laboratory, stating the measurements you would take to confirm Boyle's law.
Question 244
3 marks · Normal
Answer and see the solution →A car tyre contains air at a pressure of 230 kPa at 15°C. After a drive, its temperature rises to 40°C. Assume the volume stays constant.
Calculate the final pressure in the tyre. Give your answer to 2 significant figures.
Question 245
1 mark · Easy
Answer and see the solution →State the value of absolute zero on the Celsius scale.
Question 246
1 mark · Easy
Answer and check →Which statement correctly describes absolute zero?
- A.The temperature at which water freezes.
- B.The lowest temperature possible, where particles have minimum energy.
- C.The temperature at which gases expand most quickly.
- D.The temperature at which metals melt.
Question 247
1 mark · Easy
Answer and see the solution →Write the equation that converts a temperature from Celsius to Kelvin.
Question 248
1 mark · Easy
Answer and check →A scientist cools a gas sample to -10 °C. What is this temperature in Kelvin?
Question 249
1 mark · Easy
Answer and check →The temperature inside a refrigerator is 275 K. What is this temperature in degrees Celsius?
Question 250
2 marks · Easy
Answer and see the solution →Explain why scientists use the Kelvin scale, rather than the Celsius scale, when working with gas laws.