Phase Changes and Heating Graph Review

Vocabulary flashcards covering phase transitions, heating graph analysis, everyday examples of energy transfers during state changes, and conservation of matter during physical changes.

Evaporation

A phase change from liquid to gas that happens only at the surface and can happen at many temperatures.

Boiling

A phase change from liquid to gas that happens throughout the liquid and starts at a specific boiling point.

Heating Graph Plateaus

Flat lines on a Temperature versus Time / energy added graph indicating that during melting and boiling, temperature stays flat because energy is used for the change of state instead of raising the temperature.

Ice Melting in a Drink

An everyday example of a transition from solid to liquid where the substance gains energy.

Drops on a Cold Glass

An everyday example of a transition from gas to liquid where the substance loses energy.

Water Freezing

An everyday example of a transition from liquid to solid where the substance loses energy.

Sweat Drying from Skin

An everyday example of a transition from liquid to gas where the substance gains energy.

Snow Melting in Sunlight

An everyday example of a transition from solid to liquid where the substance gains energy.

Physical Change Reminder

The rule that ice, liquid water, and water vapor are all still water, and matter is not created or destroyed during a change of state.