1. States of matter

1.1 Solids, liquids and gases

1.2 Diffusion

2. Atoms, elements and compounds

2.1 Elements, compounds and mixtures

2.2 Atomic structure and the Periodic Table

2.3 Isotopes

2.4 Ions and ionic bonds

2.5 Simple molecules and covalent bonds

2.6 Giant covalent structures

2.7 Metallic bonding

3. Stoichiometry

3.1 Formulae

3.2 Relative masses of atoms and molecules

3.3 The mole and the Avogadro constant

4. Electrochemistry

4.1 Electrolysis

4.2 Hydrogen–oxygen fuel cells

5. Chemical energetics

5.1 Exothermic and endothermic reactions

6. Chemical reactions

6.1 Physical and chemical changes

6.2 Rate of reaction

6.3 Reversible reactions and equilibrium

6.4 Redox

7. Acids, bases and salts

7.1 The characteristic properties of acids and bases

7.2 Oxides

7.3 Preparation of salts

8. The Periodic Table

8.1 Arrangement of elements

8.2 Group I properties

8.3 Group VII properties

8.4 Transition elements

8.5 Noble gases

9. Metals

9.1 Properties of metals

9.2 Uses of metals

9.3 Alloys and their properties

9.4 Reactivity series

9.5 Corrosion of metals

9.6 Extraction of metals

10. Chemistry of the environment

10.1 Water

10.2 Fertilisers

10.3 Air quality and climate

11. Organic chemistry

11.1 Formulae, functional groups and terminology

11.2 Naming organic compounds

11.3 Fuels

11.4 Alkanes

11.5 Alkenes

11.6 Alcohols

11.7 Carboxylic acids

11.8 Polymers

12. Experimental techniques and chemical analysis

12.1 Experimental design

12.2 Acid–base titrations

12.3 Chromatography

12.4 Separation and purification

12.5 Identification of ions and gases

IGCSE Chemistry 12.1 Experimental design Question Bank

[Maximum number: 1]

Substances can be classified as elements, compounds or mixtures.

(a)

A student suggested that the apparatus shown could be used to separate the mixture of alcohols.

[ 1 ]

(i)

Suggest why a Bunsen burner is not used to heat the flask.

[ 1 ]

[Maximum number: 1]

This question is about states of matter.

(a)

A solution is a mixture of a solute and a solvent.

[ 1 ]

(i)

Name the process when a solid substance mixes with a solvent to form a solution.

[ 1 ]

[Maximum number: 1]

A student mixes $25 \mathrm{~cm}^{3}$ samples of dilute hydrochloric acid with different volumes of aqueous sodium hydroxide.

In each case, the student measures the change in temperature to test if the reaction is exothermic.

Which piece of apparatus is not needed?
A
C
D

burette
B
B

clock

pipette

thermometer

[Maximum number: 1]

During an experiment a measurement is recorded in $\mathrm{cm}^{3}$ .
Which apparatus is used?

balance

measuring cylinder

stopclock

thermometer

[Maximum number: 1]

A student measures the time taken for 2.0 g of magnesium to dissolve in $50 \mathrm{~cm}^{3}$ of dilute sulfuric acid.

Which apparatus is essential to complete the experiment?
1 stop-clock
2 measuring cylinder
3 thermometer
4 balance

1, 2 and 4

1 and 2 only

1 and 4 only

2, 3 and 4

[Maximum number: 1]

A student put exactly $25.00 \mathrm{~cm}^{3}$ of dilute hydrochloric acid into a conical flask.
The student added 2.5 g of solid sodium carbonate and measured the change in temperature of the mixture.

Which apparatus does the student need to use?

balance, measuring cylinder, thermometer

balance, pipette, stopwatch

balance, pipette, thermometer

burette, pipette, thermometer

[Maximum number: 1]

balance, measuring cylinder, thermometer

balance, pipette, stopwatch

balance, pipette, thermometer

burette, pipette, thermometer

[Maximum number: 1]

Which piece of apparatus is used to measure $13.7 \mathrm{~cm}^{3}$ of dilute hydrochloric acid?

balance

burette

conical flask

pipette

[Maximum number: 1]

$225 \mathrm{~cm}^{3}$ of an alkali are added to $20 \mathrm{~cm}^{3}$ of an acid. The temperature change is measured. Which apparatus is not needed in the experiment?

$25 \mathrm{~cm}^{3}$ measuring cylinder

$100 \mathrm{~cm}^{3}$ beaker

balance

thermometer

[Maximum number: 1]

A student measures $25.00 \mathrm{~cm}^{3}$ of dilute hydrochloric acid accurately.
Which apparatus is most suitable?

beaker

measuring cylinder

burette

dropping pipette

0 selected

Question 1

Question 1(c)

Question 1(c)(iii)

Question 1

Question 1(d)

Question 1(d)(i)

Question 2

Question 2

Question 2

Question 2

Question 2

Question 2

Question 2

Question 2