Changes Around Us

A physical change is a change in the population of a city

A physical change is a change in the form or state of matter without any change in its chemical composition.

A physical change is a change in the weather

A physical change is a change in the speed of light

Rusting of iron

Melting of ice

Evaporation

A process in which one or more substances are converted into different substances with different properties

A process that only involves physical changes

A process in which substances remain the same

A process that does not involve any substances

Cutting paper

Mixing salt and water

Boiling water

Burning of wood

A change that can only happen once

A change that is irreversible

A change that can be undone or reversed

A change that has no impact

Rusting of iron

Melting ice

Cooking an egg

Burning wood

A change that cannot be undone or reversed

A change that can be easily reversed

A change that is temporary

A change that has no impact

Mixing salt and water

Melting ice

Burning of paper

Folding a piece of paper

Biological processes in living organisms

Processes that result in the transformation of one set of chemical substances to another

Processes that result in the transformation of physical substances

Changes in the weather

Physical changes involve a change in appearance or state, but the substance remains the same. Chemical changes result in the formation of new substances with different properties.

Physical changes involve a change in state, but the substance becomes a different material.

Chemical changes involve a change in appearance, but the substance remains the same.

Physical changes result in the formation of new substances with different properties.