Question

Can electricity and light bring about reversible and irreversible changes? Give examples to support your answers.

Answer 1

Yes, electricity and light can bring reversible and irreversible changes.

• Light :

Reversible change - The light illuminate it's surrounding's environment which is reversible when we turn off the source of the light.

Irreversible change - The light coming from the sun,is necessary for the chemical reactions of the photosynthesis of the green plants. And,this reaction is an irreversible change.

• Electricity :

Reversible change - The electricity flow can create heat energy in the conductive materials but it is reversible when we turn off the source of the electricity.

Irreversible change - The electroplating process includes the electricity supply and it's an irreversible process.

Answer 2

Answer: yes

Explanation: eg. lightning burned down the tree is irreversible

Eg.