41.
Direction: Read the questions carefully and chose the letter of the correct answer.
is a change in the form and appearance of a material, with its composition remaining the same.
a. Chemical change
b. Physical change
c. Chemical reactivity
@ Physical Chemical change
42 results in the formation of new substance or material.
a. Physical change (6.)Chemical change
c. Chemical reactivity
d. Physical Chemical change
43. Which of the following shows chemical change?
a grilling of meat
b. crumpled paper
c. slicing a food
d. cutting a wood
44. Which among the choices shows physical change except one?
a. tearing a box
b. chopping a piece of wood
c. melted ice cream
d. burned wood
45. What kind of change occurs if the milk becomes sour?
a. Chemical change b. Chemical reactivity
c. Physical change
d. none of the above
46. Melting ice is an example of
a. Physical change
b. Chemical change
c. Chemical reactivity d. Physical Chemical change
47. Plastic is commonly used as soft drinks container, what material can you use as a substitute for plastic?
A. empty cans B. empty plastic bottles C. old shoes
D. scratch paper
48. In his class, Mr. Alcoriza told his students to reuse paper instead of throwing it in the bin. How will they
do it?
A. Make a paper airplane. B. Use it as a scratch paper in computing mathematical equation.
C. Give it to your classmate. D. Never mind the advice of your teacher.
49. Some materials are normally useful even after serving its original purpose. What will you do to an empty​