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Physical Changes in Daily Life

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Questions and Answers

What is a physical change characterized by?

Release of a large amount of energy

Change in the composition of a substance

Change in physical properties such as shape, size, colour, and state (correct)

Formation of a new substance

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

Rusting of iron

Crystallisation of salt

Burning of wood

Melting of ice (correct)

What are the key characteristics of physical changes?

A new substance is formed

A large amount of energy is released

Very little energy is either absorbed or evolved (correct)

The change is permanent and cannot be reversed

Which of the following is not an example of a physical change?

Rusting of iron Signup and view all the answers

What is the basis of the distinction between physical and chemical change?

The change in the composition of the substance Signup and view all the answers

What is the purpose of understanding the characteristics of physical and chemical change?

All of the above Signup and view all the answers

What is the law of nature that governs the changes that occur around us?

Change Signup and view all the answers

What type of change is the stretching of a rubber band?

Reversible change Signup and view all the answers

Which of the following changes is an example of an irreversible change?

Ripening of fruit Signup and view all the answers

What is the primary difference between physical and chemical changes?

Formation of new products Signup and view all the answers

Which of the following changes involves the formation of new products?

Burning of wood Signup and view all the answers

What is the term for changes that can be reversed by reversing the condition that caused the change?

Reversible changes Signup and view all the answers