Changes Around Us

Changes around us Worksheet-7

Multiple-Choice Question:

11. When water vapour is cooled, it condenses. Is it a chemical change?

(A) Yes                                              (B) No

(C) No, it’s a physical change         (D) Can’t say

12. When candle wax is heated, it melts. What type of change is it?

(A) Irreversible    (B) Reversible      (C) None of these

Changes around us Worksheet-8

Multiple-Choice Question:

21. Which of the following statement is TRUE?

(A) A physical change is always an irreversible change

(B) A chemical change is always a reversible change

(C) Both of these

(D) None of these

22. When chlorine is added to water in the swimming pool, it dissolves.______ change will take place.

(A) Physical         (B) Chemical        (C) No

Changes around us Worksheet-9

True/False: