Thermal Expansion and Temperature Flashcard

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature remains the same.

Front

Do all substances expand equally with the same change in temperature?

Back

No, it is false that all substances expand equally.

Front

What happens to the temperature of an object as its particles slow down?

Back

The temperature decreases.

Front

What does temperature measure in terms of particle motion?

Back

Temperature is a measure of the average kinetic energy of the particles in an object.

Front

How does the speed of molecules relate to the temperature of an object?

Back

The slower the molecules are moving, the lower the temperature of the object will be.

Front

What is thermal expansion?

Back

Thermal expansion is the increase in volume of a substance as its temperature increases.

Front

What is the relationship between temperature and kinetic energy?

Back

Temperature is directly proportional to the average kinetic energy of the particles in a substance.

Front

What is the effect of temperature on the density of most substances?

Back

As temperature increases, the density of most substances decreases.

Front

What is the formula for linear expansion?

Back

The formula for linear expansion is ΔL = αL₀ΔT, where ΔL is the change in length, α is the coefficient of linear expansion, L₀ is the original length, and ΔT is the change in temperature.

Front

What is the coefficient of thermal expansion?

Back

The coefficient of thermal expansion is a material-specific value that quantifies how much a material expands per degree of temperature change.