Useful and Harmful Materials

Which group belongs to cleaning materials?

• shampoo, soap, towel, body scrub

• zonrox, muriatic acid, detergent powder, brush

• soap, shampoo, body lotion, mouthwash, perfume

• medicol, ibuprofen, antihistamine

Some household products are results from mixture between two or more substances. Which product can be classified as medicine?

• medicol, neozep, ambroxol

• insecticide, muriatic, detergent

• shampoo, soap, lotion

• beverage reagent, benedict’s reagent

Peter used Baygon to eliminate mosquitoes inside his house. Into which material Baygon product can be classified?

• insecticide

• cleaning agent

• reagent food

• personal body care product

Into which group can we classify shampoo, lotion, mouthwash, dental floss, perfume, comb and nail polisher? I. personal body care products

II. cleaning materials

III. reagent food

IV. medicine

• I only

• I and II

• I, II and III

• I, II, III and IV

Why does your mother keeps all the cleaning materials like muriatic acid, Lysol, laundry soup, dishwashing liquid in an area cannot be reached by your younger siblings?

• These materials are expensive.

• These materials are for adults only.

• These materials are harmful

• These can be used to treat diseases.

Bathroom cleaners can remove stains and dirt in our bathroom. Why do we need to be extra careful in handling this material ?

• It can be broken.

• It is expensive.

• It contains acid that can damage our skin.

• It can damage our bathroom.

Which of the following should be done to make rotten vegetables and fruit scraps became useful?

I. burn them

II. throw them away anywhere

III. put them in a compost pit to become fertilizer

IV. collect and process them for animals feeds

• I only

• I & II

• III & IV

• II & IV

Why is steel very useful in building construction?

• Steel is elastic.

• Steel is flexible.

• Steel is breakable.

• Steel is hard and strong.

Which of the following are useful materials?

• plastic cup, ceramic plate, spoon and fork

• insecticide, pesticide, fungicide

• muriatic acid, stain remover, clog remover

• gasoline, propane, hydrogen gas

Which materials became harmful when not properly used?

• TV, computer, air conditioner, radio

• electric fan, bed, table and chairs

• black board, color, paper, table

• muriatic acid, stain remover, clog remover