Which of these statements about physical and chemical changes is true?

Physical changes produce new substances

Chemical changes can sometimes be reversed

Both types of changes can happen simultaneously

Physical changes do not require energy

Video Explanation

Watch Video Solution

Keep Practising

Students who asked this also explored

Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.

Q1.

Which of the following is a physical change?

Q2.

What happens when air is blown into lime water?

Q3.

Which process shows that a substance can change its appearance?

Q4.

When ice melts, what type of change occurs?