Physical and Chemical Changes

What happens in a chemical change?

• the objects turn to a different color or it changes its texture

• the objects looks broken who or it might be shriveled

Identify the change shown in the picture.

• Irreversible physical change

• Irreversible chemical change

• reversible physical change

• reversible chemical change

Which of the following is a example of physical change ?

• burning of wood

• photosynthesis

• melting of ice-cream

• ripening of fruit

A chemical change may involve

• Evolution of gas

• Change in temperature

• Change in colour

• All of the above

When a candle burns, both physical and chemical changes occurs.

• True

• False

In physical change , the substance formed has different properties than the original substance.

• True

• False

Choose the picture that shows chemical change.

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What type of change can be easily reversed?

• chemical change

• physical change

• both chemical and physical changes

• neither physical or chemical changes

Which of the following is an example of a physical change?

• a bike rusting

• toast burning

• butter melting

• food spoiling

Which of the following examples is a physical change but NOT a change of state of matter?

• logs burning

• water freezing into ice cubes

• candle wax melting

• paper being cut