Changes around us

What is Natural changes?

• The changes which are brought by nature or it takes place on their own is called Natural Changes.

• The changes which are brought by Human beings are called Natural Changes.

• None of These

You might have observed that bud opens out into a flower, So it is a example of which Changes?

• Change in Colour

• Change in size

• Change in Shape

• Change in position.

Which of the following is an example of a reversible change, even though it might seem irreversible at first?

• Burning of paper

• Rusting of iron

• Dissolving sugar in water

Which of the following processes occurs as a slow change but can appear to be fast under certain conditions?

• Formation of a mountain range

• Burning of wood

• Growth of a plant from a seed

Which of the following is an example of an undesirable change?

• Boiling of water to make tea

• Burning of wood to cook food

• Rusting of iron

• Ripening of fruits

What is the primary characteristic of a physical change?

• The composition of the substance remains the same.

• The composition of the substance changes.

• It is always a reversible process.

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

• Breaking a glass

• Cooking an egg

• Melting of ice

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

• Digestion of food

• Freezing of water

• Burning of coal

What happens to the chemical composition of a substance during a chemical change?

• It changes to form new substances.

• It remains unchanged.

• It becomes a mixture.

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

• Cooking food

• Weathering of rocks

• Planting a tree