A gas 4. Which is the ability of a material to return to its original shape after stretch A hardness D brittleness Belasticity C malleability 5. Which is the property of material which resist pressure? B. brittleness A flexibility C hardness D. elasticity 6 What makes a plain sheet of iron to be converted into a dustpan? A solubility B conductivity C malleability D. ductility 7. Which will catch fire easily? A wood B paper C vegetable peeling stone 8 Mother was cooking spaghetti last night The water got so hot that steam Toated up from the pan Steam is an example of a B solid C food D liquid 9. Which of these materials can clog drainage and may cause flooding? A paint B. dyes C solvent D. plastic 10 Which physical property of matter can you observe in rubber? A elasticity B malleability C. ductility D. conductivity 11. Why is chemical spray harmful to the environment? A. It can spoil foods C it caused eye damage B It can destroy materials Dit destroys ozone layer 12. Why is fuel like gasoline good to use when burning a big chunk of wood? A To attract fire easily and burn fast C. To change its composition B. To make it a nature fertilizer D. To decay the wood fully 13. What harm do motor vehicles do to the environment? A They produce harmful chemicals B. They improve the environment C. They produce useful chemicals D. They produce useful smoke 14. Which human activity causes the most harmful change in the environment? A Riding a bicycle C. Using a solar energy B Swimming in the beach D. Cutting down trees in the forest 15. Which of the following changes is generally difficult to reverse? A Change in state C. Chemical change B. Physical change D. Change in temperature 16 Which of the following situations shows proper storage of materials? A Place fiammable materials at the reach of small children B. Put all materials in one cabinet Keep expired materials inside the cabinet D. Store materials according to their uses 17 it is the change of matter in form only not in composition A physical change C. chemical change B. environmental change D none of the above
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