Equal masses of water and cooking oil are given equal amounts of energy, but the oil ends up hotter. Which property of the materials explains this?

Their specific heat capacity, which is lower for the oil.

Explain why a larger mass of the same material needs more energy for the same temperature rise.

There are more particles to supply energy to, so more energy is needed for each degree of temperature rise.

Which three quantities must be known to calculate the energy needed to raise the temperature of a substance?

The mass of the substance, its specific heat capacity and the temperature change.

State, in words, the equation for the change in thermal energy when a substance is heated.

Change in thermal energy = mass × specific heat capacity × temperature change.

AQA GCSE Physics 8463

Atomic Structure

Topic overview The structure of an atom Mass number, atomic number and isotopes From the plum pudding model to the nuclear model Chadwick, the neutron, and comparing the models Radioactive decay and nuclear radiation Nuclear equations Half-lives and the random nature of radioactive decay Radioactive contamination Background radiation Uses of nuclear radiation, and how half-life affects hazard Nuclear fission and nuclear fusion

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Magnetism and Electromagnetism

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Particle Model of Matter

Topic overview Density of materials Changes of state and internal energy Temperature changes in a system and specific heat capacity Changes of state and specific latent heat Particle motion in gases Pressure in gases, and increasing the pressure of a gas

Space Physics

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Particle Model of Matter

Temperature changes in a system and specific heat capacity

3 things to know
Paper 1

Overview

The factors deciding how much a substance warms when heated, the equation linking change in thermal energy, mass, specific heat capacity and temperature change with its symbols and units, what specific heat capacity means and why water makes a good coolant, and calculations of energy, temperature rise, specific heat capacity and mass.

What you need to know

Answer each one before you reveal it.

Your recallNot started

Evaluation

Explain what decides how far a heated substance's temperature rises, and how the energy needed for a given rise is worked out.

Key term

State the three factors that decide how much the temperature of a substance rises when it is heated.

Key term

Two beakers hold 1 kg and 2 kg of water and are given the same amount of energy. Which shows the larger temperature rise?

Questions from this subtopic

Each one with the model answer underneath.

1
State the three factors that decide how much the temperature of a substance rises when it is heated.
Model answer
The mass of the substance, the type of material it is, and the energy supplied to it.
2
Two beakers hold 1 kg and 2 kg of water and are given the same amount of energy. Which shows the larger temperature rise?
Model answer
The 1 kg beaker, because for the same energy a smaller mass rises further in temperature.
3
Equal masses of water and cooking oil are given equal amounts of energy, but the oil ends up hotter. Which property of the materials explains this?
Model answer
Their specific heat capacity, which is lower for the oil.
4
Explain why a larger mass of the same material needs more energy for the same temperature rise.
Model answer
There are more particles to supply energy to, so more energy is needed for each degree of temperature rise.
5
Which three quantities must be known to calculate the energy needed to raise the temperature of a substance?
Model answer
The mass of the substance, its specific heat capacity and the temperature change.
6
State, in words, the equation for the change in thermal energy when a substance is heated.
Model answer
Change in thermal energy = mass × specific heat capacity × temperature change.

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