Changes Around Us
Q.1. Give some examples of changes around us.
Q.2. Every change has a _________.
Q.3. Which kind of changes are brought by the causes?
Q.4. What are reversible changes?
Q.5. What are irreversible changes?
Q.6. Give three examples of reversible changes.
Q.7. Give three examples of Irreversible changes.
Q.8. How many kinds of changes are there based on whether new substances are formed or not?
Q.9. What are physical changes?
Q.10. Give four examples of physical changes.
Q.11. Explain how the property of expansion is useful in daily life?
Q.12. Explain how the metal rim is fitted on the wheel?
Q.13. What are chemical changes?
Q.14. Give two examples of chemical changes.
Q.15. What is formed when wax burns?
Q.16. Give an example of mixing which is reversible.
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