HW4.3 Calorimetry

Front

What happens to the particles in a substance when heat is added?

Back

The particles speed up.

Front

What is the temperature of a metal cube at thermal equilibrium with a liquid at 70°C if the cube starts at 10°C?

Back

The temperature will be between 10°C and 70°C.

Front

What type of change is evaporation?

Back

Evaporation is an endothermic change.

Front

What does ΔT represent in a calorimetry problem?

Back

ΔT represents the change in temperature, measured in degrees Celsius.

Front

In a heating curve, which line segment represents vaporization?

Back

The line segment D-E represents vaporization.

Front

Define calorimetry.

Back

Calorimetry is the science of measuring the heat of chemical reactions or physical changes.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact do not exchange heat, meaning they are at the same temperature.

Front

What is the formula for calculating heat transfer (q)?

Back

q = m * c * ΔT, where m is mass, c is specific heat capacity, and ΔT is the change in temperature.

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1°C.

Front

What is the difference between endothermic and exothermic processes?

Back

Endothermic processes absorb heat, while exothermic processes release heat.