Chemical and Physical Changes

Front

Chemical change

Back

A chemical change is a process in which one or more substances are converted into different substances with different properties.

Front

Give an example of a physical change.

Back

Melting of ice

Front

What are the indicators of a chemical change?

Back

Formation of a precipitate, change in color, release of gas, and absorption or release of heat

Front

What are the properties of a physical change?

Back

Physical changes do not change the chemical composition of a substance.

Front

What are the phase transitions involved in physical changes?

Back

Melting, freezing, vaporization, condensation, sublimation, and deposition

Front

Define chemical change.

Back

A chemical change is a process in which one or more substances are converted into different substances with different properties.

Front

Provide another example of a physical change.

Back

Cutting a piece of paper into smaller pieces

Front

List three indicators of a chemical change.

Back

Production of gas, formation of a precipitate, change in color or temperature

Front

Explain the properties of a physical change.

Back

The properties of a physical change include changes in form, state, or appearance of matter without any change in its chemical composition.

Front

Describe the phase transitions in physical changes.

Back

Phase transitions in physical changes refer to the process of a substance changing from one state of matter to another, such as from solid to liquid (melting) or from liquid to gas (vaporization).