Reversible and Irreversible change

An irreversible change is...

• Something that can be changed back to its original form

• Something that cannot be changed back to its original form

• Something that can be turned in to something new

Select the reversible change

• Boiling an egg

• Baking a cake batter

• Melting chocolate

Is freezing something a reversible or an irreversible change?

• Reversible change

• Irreversible change

Of the changes below, which is NOT an irreversible change:

• melting

• cooking

• rusting

• burning

Burning a candle wax is ...

• reversible change

• irreversible change

• both

• none of the above

Baking a cake is an example of reversible change

• true

• false

what Happens when egg shell is mixed into vinegar?

• It remains the same

• The vinegar gets absorbed

• It produces carbon dioxide

• the egg shell starts breaking into pieces

Select a flammable substance:

• carbon-dioxide

• vinegar

• petrol

• metal

Rusting is an Irreversible change

• true

• false

heating sugar is...

• reversible change

• irreversible change