s3_chem_chp_13_test_eng_A

Copper is commonly used by humans at a time later than iron in the human history.

• T

• F

Alloys usually have improved properties than their constituent metal(s).

• T

• F

The boiling point range of fuel oil is higher than that of liquefied petroleum gas.

• T

• F

Which of the following metals is usually extracted by physical methods?

A

B

C

D

• Calcium

• Aluminium

• Iron

• Gold

Bronze is more suitable to be used to make a statue(銅像) at the Avenue of Stars(星光大道) in Tsim Sha Tsuithan copper. This is because

• bronze has a lower melting point than copper.

• bronze is stronger than copper.

• bronze is more resistant to corrosion than copper.

Which of the following statements about crude oil is/are correct?

• It can be used as a fuel directly.

• It is a compound of hydrocarbons of different sizes.

• One of its fractions is used as raw materials of plastics.

Which of the following is NOT a macromolecule (polymer)?

• Polystyrene

• Ethene

• Polyvinyl chloride

• Nylon

Which of the following are the environmental problems associated with the disposal of used metals and plastics?

• Reducing land supply

• Causing water pollution

• Destroying the habitats of wildlife

Based on the differences in the ______ of hydrocarbons, we can separate hydrocarbons in crude oil into fractions by a method called fractional distillation.

• boiling point

• melting point

• state

• smell

The discovery and use of metals are related to their ease of extraction and _______________ .

• availability

• size

• boiling point

• melting point