Specific Heat Capacity Quiz

What is the definition of specific heat capacity?

• The energy needed to melt 1 kg of a substance

• The energy required to raise the temperature of 1 kg of a substance by 1°C

• The heat needed to evaporate water

What are the units of specific heat capacity?

• J/kg

• W/°C

• J/kg°C

Which substance has the highest specific heat capacity from the table on the page?

• Water

• Lead

• Iron

If two materials are heated with the same amount of energy, the one with the lower specific heat capacity will:

• Cool down faster

• Reach a higher temperature

• Absorb less heat

What equipment is needed to measure specific heat capacity experimentally?

• Bunsen burner and stopwatch

• Thermometer, joulemeter, heater, balance

• Beaker, light sensor, tripod

What does ∆E represent in the equation ΔE = mcΔθ?

• Energy stored

• Energy transferred

• Energy lost

If mass = 1 kg, c = 4200 J/kg°C, and Δθ = 10°C, what is ΔE?

• 420 J

• 42,000 J

• 4,200 J

Why do storage heaters use bricks with high specific heat capacity?

• They release energy quickly

• They cost less

• They store energy and release it slowly

What is the correct rearrangement of ΔE = mcΔθ to find c?

• c = Δθ ÷ (m × ΔE)

• c = ΔE ÷ (m × Δθ)

• c = m × ΔE ÷ Δθ

Why might experimental values of specific heat capacity differ from the true value?

• Changes in mass

• Inaccurate electrical power

• Heat lost to surroundings