Heat Capacity-Specific Heat

Front

What is heat capacity?

Back

Heat capacity is the amount of thermal energy required to change the temperature of a given quantity of a substance by 1°C.

Front

What is specific heat?

Back

Specific heat is the amount of thermal energy required to increase the temperature of 1 kg of a material by 1°C.

Front

How do you calculate the heat energy (Q) absorbed or released by a substance?

Back

Q = mcΔt, where m is the mass, c is the specific heat, and Δt is the change in temperature.

Front

What is the specific heat of water?

Back

The specific heat of water is 4.18 J/g°C.

Front

If 20 g of water cools from 25°C to 20°C, how much heat energy is released?

Back

Q = mcΔt = 20 g * 4.18 J/g°C * (20°C - 25°C) = 418 J.

Front

Which material would have the highest specific heat: Copper, Stainless Steel, Carbon Steel, or Zinc?

Back

Stainless Steel has a higher specific heat compared to Copper, Carbon Steel, and Zinc.

Front

What is the specific heat of copper?

Back

The specific heat of copper is 0.39 J/g°C.

Front

How does mass affect the heat energy absorbed by a substance?

Back

The greater the mass of a substance, the more heat energy it can absorb for a given temperature change.

Front

What happens to the temperature of a substance when it absorbs heat?

Back

The temperature of the substance increases as it absorbs heat, assuming no phase change occurs.

Front

What is the formula to find the temperature change (∆t) when heat is added?

Back

∆t = Q / (mc), where Q is the heat added, m is the mass, and c is the specific heat.