Changes around us

which of the following is a reversible change.

• Melting of a chocolate

• Curdling of milk

• Corrosion of metal

• Tearing of paper

Which of the following is not an irreversible change?

• Frying food products

• Boiling vegetables

• Melting of wax

• Baking biscuits

What is an example of a reversible change?

• Freezing water

• Burning wood

• Rotting fruit

• Exploding fireworks

Which of the following is a physical change?

• Burning coal

• Grinding coffee beans

• Rusting of iron

• Decomposing food

What is an example of a chemical change?

• Boiling water

• Crushing a can

• Baking a cake

• Freezing ice

What is an example of a physical change?

• Boiling water

• Crushing a can

• Grinding coffee beans

• Freezing ice

What is an example of a chemical change?

• Boiling water

• Crushing a can

• Baking a cake

• Freezing ice

Digestion of food is an example of ___________.

All the changes in nature are reversible

• TRUE

• FALSE

A reversible change is a permanent change

• TRUE

• FALSE