Specific Heat Capacity
Physics ⇒ Heat and Thermodynamics
Specific Heat Capacity starts at 8 and continues till grade 12.
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A 0.2 kg piece of metal at 100°C is dropped into 0.5 kg of water at 20°C. The final temperature is 22°C. If the specific heat capacity of water is 4200 J kg⁻¹ K⁻¹, calculate the specific heat capacity of the metal.
A 0.5 kg sample of a substance is heated from 10°C to 60°C by supplying 10,000 J of energy. What is the specific heat capacity of the substance?
A 1 kg block of iron (c = 450 J kg⁻¹ K⁻¹) and a 1 kg block of aluminum (c = 900 J kg⁻¹ K⁻¹) are both heated with 1800 J of energy. Which block will have a higher temperature increase?
A 100 g sample of a substance at 80°C is placed in 200 g of water at 20°C. The final temperature is 25°C. If the specific heat capacity of water is 4200 J kg⁻¹ K⁻¹, calculate the specific heat capacity of the substance.
A 2 kg block of copper (specific heat capacity = 390 J kg⁻¹ K⁻¹) is heated from 20°C to 50°C. Calculate the amount of heat absorbed by the block.
A 250 g sample of a metal requires 1050 J of heat to increase its temperature from 20°C to 28°C. Calculate the specific heat capacity of the metal.
Describe a practical method to determine the specific heat capacity of a metal in a school laboratory.
Describe the difference between specific heat capacity and heat capacity.
Explain why coastal areas have milder climates compared to inland areas, in terms of specific heat capacity.
Explain why metals generally have lower specific heat capacities than non-metals.
Explain why sand gets hotter than water during the day at the beach, even though both receive the same amount of sunlight.
State the SI unit of specific heat capacity.
The formula to calculate the heat energy (Q) absorbed or released by a substance is Q = m × c × ΔT. What does 'c' represent in this formula?
A 0.3 kg sample of a substance at 25 °C absorbs 4500 J of heat and its temperature rises to 55 °C. Calculate the specific heat capacity of the substance.
A 0.4 kg block of an unknown material is heated from 15 °C to 45 °C, requiring 4800 J of energy. What is the specific heat capacity of the material?
A 200 g block of a certain metal at 150 °C is placed in 400 g of water at 25 °C. The final equilibrium temperature is 30 °C. Assume no heat is lost to the surroundings and the specific heat capacity of water is 4200 J kg⁻¹ K⁻¹. Calculate the specific heat capacity of the metal.
A 500 g sample of a liquid is heated from 20 °C to 70 °C by supplying 15,000 J of energy. Calculate the specific heat capacity of the liquid.
A scientist claims that the specific heat capacity of a substance is always the same, regardless of whether it is measured at constant pressure or constant volume. Is this claim correct? Explain your answer.
Explain, with reference to molecular structure, why water has a much higher specific heat capacity than most other common substances.
