Changes around us Worksheet-4

Changes around us Worksheet-4

 

Fill in the blanks:

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

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

 

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

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

 

  1. The melting of ice candy is:

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

(C) A chemical change

 

  1. Dissolving sugar in water is:

(A) A reversible change                   (B) An irreversible change

(C) None of these

 

  1. Cooking of food is:

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

(C) A physical change

 

  1. The ripening of a mango is:

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

(C) A chemical change

 

  1. Souring of milk is:

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

(C) A physical change

 

  1. Copper is a metal which is used for many purposes. One of its uses is to make utensils by melting it. What type of change is it?

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

(C) None of these

 

  1. Blow the balloon. Now, release the air. Can it come back to its original form?

(A) Yes, it can                                   (B) No, it can’t

 

  1. Take some dough and make a ball. Roll it out. Can you change it back to the ball of dough?

(A) Yes                 (B) No                  (C) Don’t know

 

Answer Key:

  1. (A)
  2. (A)
  3. (B)
  4. (B)
  5. (A)
  6. (C)
  7. (A)
  8. (A)
  9. (A)
  10. (A)