Podcast
Questions and Answers
What is a physical change characterized by?
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?
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?
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?
Which of the following is not an example of a physical change?
What is the basis of the distinction between physical and chemical change?
What is the basis of the distinction between physical and chemical change?
What is the purpose of understanding the characteristics of physical and chemical change?
What is the purpose of understanding the characteristics of physical and chemical change?
What is the law of nature that governs the changes that occur around us?
What is the law of nature that governs the changes that occur around us?
What type of change is the stretching of a rubber band?
What type of change is the stretching of a rubber band?
Which of the following changes is an example of an irreversible change?
Which of the following changes is an example of an irreversible change?
What is the primary difference between physical and chemical changes?
What is the primary difference between physical and chemical changes?
Which of the following changes involves the formation of new products?
Which of the following changes involves the formation of new products?
What is the term for changes that can be reversed by reversing the condition that caused the change?
What is the term for changes that can be reversed by reversing the condition that caused the change?
