4NA_Thermal Properties of Matter-Publishers' test
Quiz by Jessica Lew
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- Q1
When heat is supplied to a body,
the body undergoes a change of state.
there is an increase in the internal energy of the body.
the particles in the body move or vibrate faster.
there is always an increase in the temperature of the body.
120s - Q2
The increase in temperature when heat is supplied to a body can be explained by
an increase in the average spacing of the particles in the body
an increase in the average kinetic energy of the particles in the body
a decrease in the internal energy of the particles in the body.
a decrease in the average speeds of the particles in the body.
120s - Q3
When some coloured water is heated in the flask shown below, it is observed that the water level in the tube rises. Which of the following statements best explains this observation?
The coloured water increased in volume, as the heat absorbed increased the internal energy of the coloured water
The coloured water increased in volume, as the water molecules became bigger.
The coloured water increased in mass, as the heat absorbed increased the potential energy of the water molecules.
The coloured water increased in mass, as the heat absorbed increased the kinetic energy of the water molecules.
120s - Q4
A large piece of pure ice at 0°C is left under the hot Sun. After a while, some of the ice melts away. What is the likely temperature of the remaining ice?
Slightly less than 0°C
Slightly greater than0°C
0°C
Approximately room temperature
120s - Q5
Some alcohol and water were spilled on a table and a short while later, the alcohol ‘disappeared’ from the table, but not the water. Why is this so?
Water has a higher boiling point than alcohol, and therefore more heat is needed for water to evaporate.
Additional energy is required to push back the air molecules in the atmosphere when water changes into vapour, but this is not the case for alcohol.
The amount of energy needed to break the bonds between the particles is smaller for water than for alcohol.
Alcohol molecules move faster than water molecules at the same temperature
120s - Q6
Which of the following represents the melting curve of water?
120s - Q7
Why does a pure substance melt at a constant temperature?
Negligible (i.e. very little) heat is absorbed during this process.
All pure substances melt at 0°C.
The heat absorbed during melting is used to increase the kinetic energies of the particles, and not the temperature of the substance.
The heat absorbed during melting is used to break the bonds between the
particles.
120s - Q8
Pure water at room temperature is put in a freezer, where the temperature has been preset to –10°C. After 30 minutes, Ali opens the freezer to discover that the water has yet to freeze. Which of the following statements best explains why the water has not frozen?
The temperature in the freezer is –10°C and not 0°C, so it takes a longer time for the water to freeze.
The water has not gained enough thermal energy to form ice.
The kinetic energy of the water molecules is still decreasing.
The water molecules are getting smaller in size, but not small enough to form ice yet.
120s - Q9
In which of the following scenarios would a piece of wet cloth dry the fastest?
A
C
B
D
120s - Q10
The rate of evaporation is affected by several factors. Which statement describes one of the factors correctly
A smaller exposed surface area increases the rate of evaporation.
Lower atmospheric pressure increases the rate of evaporation.
Higher humidity increases the rate of evaporation.
A lower surrounding temperature increases the rate of evaporation.
120s
