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QUIZ
Introduction to Chemistry
60%average accuracy
250 plays
10th grade
Chemistry
a year ago by
15 questions
Q.

Chemistry is a field of science that studies

answer choices

Interactions between matter

Structure of matter

Composition and properties of matter

Live of matter

Q.

Which one is not a Chemistry career?

answer choices

Lecturer

Farmer

Actuary

Anesthetist

Q.

These chemicals are used in food processing except..

answer choices

Sodium chloride

Sodium sulphate

Carbon dioxide

Sodium bicarbonate

Q.

What are the variables of the experiment?

answer choices

Manipulated variable: Types of salt,

Responding variable: Solvent,

Constant variable: Solubility of salt

Manipulated variable: Types of salt,

Responding variable: Solubility of salt,

Constant variable: Solvent

Manipulated variable: Types of salt,

Responding variable: Solubility of salt,

Constant variable: Rate of stirring

Manipulated variable: Rate of stirring,

Responding variable: Solubility of salt,

Constant variable: Solvent

Q.

An experiment is carried out to study the solubility of sodium chloride in water and in benzene. What is the

(i) manipulated variable and

(ii) constant variable

of the experiment?

answer choices

(i) Solvent and

(ii) Rate of stirring

(i) Solvent and

(ii) Mass of sodium chloride

(i) Solute and

(ii) Volume of solvent

(i) Solute and

(ii) Rate of stirring

Q.

Which of the following affects the amount of sodium chloride that can dissolve in water?

answer choices

Volume and temperature of water

Rate of stirring and size of sodium chloride

Volume, rate of stirring and size of sodium chloride

Volume, size of sodium chloride and temperature of water

Q.

Which of the following symbols represents an oxidizing agent?

answer choices
Q.

What precaution must be taken when storing a chemical with this label?

answer choices

Store it in a dark place

Store it in a fume cupboard

Store it in a locked cupboard

Store it away from any Bunsen burner

Q.

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

answer choices

Heat the solution too strongly

Hold the boiling tube vertically

Never use a Pyrex boiling tube to heat the solution

Never direct the mouth of the boiling tube at your classmates

Q.

An experiment should be carried out in the fume cupboard if it involves

answer choices

The release of poisonous gas.

The release of flammable gas.

The use of corrosive chemicals.

The use of oxidising chemicals.

Q.

Why is it important to understand the experimental procedures before carrying out the experiment?


The answer more than one

answer choices

To prevent wastage of chemicals

To prevent accidents from happening

To prevent the repetition of the experiment

To know what apparatus is needed to carry out the experiments

Q.

What are the benefits for our country from producing chemicals locally?


The answer more than one

answer choices

The government can collect tax from chemical export

The people can build residential places nearby

The industry provides job opportunities

The country save on foreign exchange

Q.

What is the purpose of wearing gloves during experimenting?

answer choices

Protect hands from sharp objects

Protect hands from volatile liquid

Protect hands from chemicals or infection

Protect hands from fire

Q.

The following equipment is safety equipment in the laboratory except

answer choices

Fume cupboard

Fire extinguisher

Safety shower

Fire hydrant

Q.

Reactive metals Q must be stored in the paraffin oil to prevent reaction with the moisture in the air. What is Q?

answer choices

Magnesium

Potassium

Copper

Aluminium

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