Chemistry Form 4 - Chapter 1

From which country does the word ‘Kimia” originate?

• Saudi Arabia

• England

• Greek

• Egypt

Chemistry is the study of

• structure of living things.

• all matters in the earth crust

• matters that make up the universe.

• properties, composition, and structure of matter and the changes they undergo.

The branch of chemistry that studies how plastics are formed is

• organic chemistry

• polymer chemistry

• inorganic chemistry

• industrial chemistry

Which of the following chemicals is synthetic?

• Starch

• Helium

• Ammonia

• Sodium chloride

Which of the following processes does not involve a chemical reaction?

• Burning of petrol

• Cooking an egg

• Photosynthesis

• Melting of ice

Polyethene terepthlate is manufactured in a petrochemical complex in Gebeng, Pahang. This product is used to make

• plastic bottles

• medicine

• clothing

• fertilizer

When heating a solution in a boiling tube, what precaution must you take?

• Never heat the solution too strongly.

• Never hold the boiling tube vertically.

• Never point the boiling tube at your classmates.

• Never use a Pyrex boiling tube to heat the solution.

What precaution must you take when diluting a concentrated acid?

• Add the concentrated acid to water.

• Add water to the concentrated acid.

• Mix equal volumes of the concentrated acid and water together.

• Mix one volume of concentrated acid to three volumes of water together.

Which of the following methods to separate the mixtures in petroleum?

• Fractional distillation

• Recrystallisation

• Chromatography

• Freezing

Which of the following shows the correct order of the scientific methods?

• Observation, hypothesis, Inference

• Observation. Inference, Hypothesis

• Inference, Hypothesis, Observation

• Inference, Observation, Hypothesis