Phase Changes & Diagrams

Front

What is a phase change?

Back

A phase change is a transition of matter from one state (solid, liquid, gas) to another due to changes in temperature or pressure.

Front

What are the three main states of matter?

Back

Solid, Liquid, Gas.

Front

What is the boiling point of a substance?

Back

The boiling point is the temperature at which a liquid turns into a gas.

Front

What is the melting point of a substance?

Back

The melting point is the temperature at which a solid turns into a liquid.

Front

What is a heating curve?

Back

A heating curve is a graph that shows the temperature of a substance as it is heated over time, illustrating phase changes.

Front

What does the triple point of a substance represent?

Back

The triple point is the condition at which all three phases (solid, liquid, gas) coexist in equilibrium.

Front

What is the critical point in a phase diagram?

Back

The critical point is the temperature and pressure at which a substance can no longer exist as a liquid and gas phases become indistinguishable.

Front

What is the significance of the equilibrium point in a phase diagram?

Back

The equilibrium point indicates the conditions under which two phases of a substance can coexist in balance.

Front

How does pressure affect the boiling point of a liquid?

Back

Increasing pressure raises the boiling point, while decreasing pressure lowers it.

Front

What is the relationship between temperature and kinetic energy in phase changes?

Back

As temperature increases, the kinetic energy of particles increases, leading to phase changes from solid to liquid to gas.