Changes Around Us

Changes around us Worksheet-4

Fill in the blanks:

11. When glue is exposed to air, it dries up. It is a type of _________ change.

(A) Chemical (B) Physical                (C) None of these

12. What type of change is sawing of a piece of wood?

(A) Physical   (B) Chemical              (C) None of these

Changes around us Worksheet-5

Fill in the blanks:

21. Melting of chocolate is:

(A) A chemical change                    (B) None of these

(C) A physical change

22. Ripping of paper is a:

(A) A chemical change                    (B) A physical change

(C) None of these

Changes around us Worksheet-6

Multiple-Choice Question:

1. Butter melts when it is warmed. What type of change is it?

(A) A chemical change                    (B) A physical change

(C) None of these

2. When vinegar and bicarbonate of soda are mixed, they produce a gas. It is:

(A) None of these                            (B) A chemical change

(C) A physical change