F4 Chemi CH1

Which of the following statements involve chemistry field?

• Study of the animal cell structure

• Optimising the insulation for heat

• Investigate the resistance in electricity

• Research in increasing the melting point of a substance

Which of the following is matched correctly between its field and its chemical use?

• Field: Food

  Chemical use: Herbicide

• Field: Agriculture

  Chemical use: Stabiliser

• Field: Medicine

  Chemical use: Analgesic

• Field: Industry

  Chemical use: Preservative

"The increase in temperature of water, will increase the solubility of salt in water"

What type of statement is this?

• Aim

• Observation

• Hypothesis

• Problem statement

"Making observation or measurement and recording the data systematically"

Which of the following scientific investigation step matches the statement?

• Making Observation

• Making Hypothesis

• Collecting data

• Making conclusion

Which of the following chemicals is used in food preservation?

• Chlorine

• Benzoic acid

• Silicon dioxide

• Magnesium chloride

Which of the following occupations involve a knowledge of chemistry?

I. Geologist

II. Clerk

III. Pharmacist

IV. Computer programmer

• I and II

• I and III

• II and IV

• III and IV

Which of the following steps are carried out after the data collection?

I. Making observation

II. Making conclusion

III. Making hypothesis

IV. Writing report

• I and III

• I and IV

• II and III

• II and IV

A student carries out an experiment to determine the rate of dissolving salt at different sizes. Which of the following apparatus is essential for the experiment?

• Conical flask

• Stopwatch

• Evaporating dish

• Bunsen burner

The diagram shows a graph of sodium chloride solubility against temperature of water.

Which of the following statements is correct?

• Temperature is the responding variable

• Solubility is not affected by the temperature.

• Amount of sodium chloride is the manipulated variable

• Increasing temperature will increase the amount of sodium chloride dissolved.

Which of the following is the importance of personal protective equipment?

• Removing chemical substance and dirt from hand.

• Cleaning the body from chemical spillage

• Protecting respiratory organ from chemical fumes

• Extinguishing fire from clothing