What is the main difference between a chemical change and a physical change?
Answer and explanation
Correct answer: One or more new substances are formed in a chemical change.
In a chemical change, the chemical composition of substances changes and one or more new substances are formed. In contrast, a physical change usually changes only the shape, state, or appearance while the chemical identity remains the same. For example, melting ice is a physical change, whereas rusting of iron is a chemical change.
Frequently asked questions
What is the correct answer to this question?
One or more new substances are formed in a chemical change.
Why is this the correct answer?
In a chemical change, the chemical composition of substances changes and one or more new substances are formed. In contrast, a physical change usually changes only the shape, state, or appearance while the chemical identity remains the same. For example, melting ice is a physical change, whereas rusting of iron is a chemical change.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
