higher chemistry unit 1 section 5 the mole multiple choice questions this is designed to be used by...

Higher Higher ChemistryChemistry

Unit 1Section 5 The MoleMultiple Choice Questions

This is designed to be used by teachers to help students develop skills in answering multiple choice questions.

Douglas Racey, Waid Academy, Anstruther, Fife, Scotland

Higher Chemistry Higher Chemistry Unit 2 - Section 5 The MoleUnit 2 - Section 5 The Mole Multiple Choice Questions Multiple Choice Questions

1.1. The number of moles of ions in 1 The number of moles of ions in 1 mol of copper(II)phosphate ismol of copper(II)phosphate is

A.A. 1 1

B.B. 2 2

C.C. 44

D.D. 55

Answer D.


2.2. The Avogadro Constant is the The Avogadro Constant is the same as the number ofsame as the number of

A.A. atoms in 24 g of carbon atoms in 24 g of carbon

B.B. molecules in 16g of oxygen molecules in 16g of oxygen

C.C. molecules in 2g of hydrogenmolecules in 2g of hydrogen

D.D. ions in 1 litre of sodium ions in 1 litre of sodium chloride chloride solution, solution, concentration 1 molconcentration 1 moll-1l-1 Answer C.


3.3. What volume of oxygen, in litres, What volume of oxygen, in litres, is required for the complete is required for the complete combustion of 1 litre of butane combustion of 1 litre of butane gas? (All volumes are measured gas? (All volumes are measured under the same conditions of under the same conditions of temperature and pressure)temperature and pressure)

A.A. 1 1 B.B. 4 4 C.C. 6.56.5 D.D. 1313 Answer C.


4.4. Which of the following contains the Which of the following contains the largestlargest number of molecules? number of molecules?

A.A. 0.10g of hydrogen gas 0.10g of hydrogen gas

B.B. 0.17g of ammonia gas 0.17g of ammonia gas

C.C. 0.32g of methane gas0.32g of methane gas

D.D. 0.35g of chlorine gas0.35g of chlorine gas

Answer A.


5.5. It is now known that protons and It is now known that protons and neutrons are made up of smaller neutrons are made up of smaller particles called quarks. Each proton particles called quarks. Each proton and each neutron contains 3 quarks. and each neutron contains 3 quarks. What is the approximate number of What is the approximate number of quarks in 1g of carbon-12?quarks in 1g of carbon-12?

A.A. 6 x 106 x 102323

B.B. 9 x 109 x 102323

C.C. 1.8 x 101.8 x 102424

D.D. 2.16 x 102.16 x 102525

Answer A


6.6. How many atoms will be present in How many atoms will be present in 11.2 litres of gaseous fluorine (molar 11.2 litres of gaseous fluorine (molar volume 22.4 litres molvolume 22.4 litres mol-1-1))

A.A. 1.505 x 101.505 x 102323

B.B. 3.01 x 103.01 x 102323

C.C. 6.02 x 106.02 x 102323

D.D. 1.204 x 101.204 x 102424

Answer C.


7.7. A new form of carbon has been A new form of carbon has been discovered. It consists of a football-discovered. It consists of a football-shaped molecule consisting of 60 shaped molecule consisting of 60 carbon atoms. Approximately how carbon atoms. Approximately how many such molecules are present in many such molecules are present in 12g of this type of carbon? 12g of this type of carbon?

A.A. 1.0 x 101.0 x 102222

B.B. 1.2 x 101.2 x 102323

C.C. 6.0 x 106.0 x 102323

D.D. 3.6 x 103.6 x 102323

Answer A.


8.8. The mass of 1 mol of sodium is 23g. The mass of 1 mol of sodium is 23g. What is the approximate mass of 1 What is the approximate mass of 1 sodium atom?sodium atom?

A.A. 6.0 x 106.0 x 102323 g g

B.B. 6.0 x 106.0 x 10 -23 -23 g g

C.C. 3.8 x 103.8 x 10 -23 -23 g g

D.D. 3.8 x 103.8 x 10 -24 -24 g g

Answer C.


9.9. A metal (melting point 843A metal (melting point 843ooC, density 1.54 C, density 1.54 g/cmg/cm33) was obtained by electrolysis of its ) was obtained by electrolysis of its chloride (melting point 772chloride (melting point 772ooC, density C, density 2.15 g/cm2.15 g/cm33). During the electrolysis the ). During the electrolysis the metal would occur asmetal would occur as

A.A. a solid on the surface of the a solid on the surface of the electrolyteelectrolyte

B.B. a liquid on the surface of the a liquid on the surface of the electrolyteelectrolyte

C.C. a solid at the bottom of the a solid at the bottom of the electrolyteelectrolyte

D.D. a liquid at the bottom of the a liquid at the bottom of the electrolyteelectrolyte

Answer A.


10.10. A one carat diamond used in a A one carat diamond used in a ring contained approximately 1 x ring contained approximately 1 x 10102222 carbon atoms. What is the mass carbon atoms. What is the mass of the diamond?of the diamond?

A.A. 0.1 g 0.1 g

B.B. 0.2 g0.2 g

C.C. 1.0 g1.0 g

D.D. 1.2 g1.2 g

Answer B.

higher chemistry unit 1 section 5 the mole multiple choice questions this is designed to be used by...

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