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2.2 Thermal properties and temperature

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Question 151

A student places a beaker of ice-cold water on a digital scale in a warm, humid room. The student records the total mass of the beaker and its contents over 30 minutes. The results are shown in the table:

Time (minutes)Total mass (g)0150.010150.820151.530152.1 \begin{array}{|c|c|} \hline \text{Time (minutes)} & \text{Total mass (g)} \\ \hline 0 & 150.0 \\ \hline 10 & 150.8 \\ \hline 20 & 151.5 \\ \hline 30 & 152.1 \\ \hline \end{array} Time (minutes)0102030​Total mass (g)150.0150.8151.5152.1​​

Why does the total mass increase?

A

Water vapor condenses onto the beaker.

B

The ice in the beaker melts.

C

The water in the beaker evaporates.

D

The water in the beaker freezes.

Markscheme

2.2 Thermal properties and temperature Questions

  1. IGCSE
  2. /Physics
  3. /2.2 Thermal properties and temperature

528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.

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