Modules C4/C5 - Multiple choice revision quiz

1. Which one of the following pairs atoms is most likely to form an ionic bond?A. Na and FB. O and F

C. N and FD. C and F

2. Aluminium is in Group III. The oxide ion has the formula O2-. Aluminium oxide will have the formula...

A. AlOB. AlO2

C. Al2O3

D. Al3O2

3. Which of the following statements about sodium chloride is incorrect?A. it has a high melting pointB. it conducts electricity at room

temperature

C. it is soluble in waterD. it is brittle

4. The structure normally associated with ionic bonding is...A. a giant latticeB. a simple moleculeC. a giant moleculeD. a regular arrangement of ions surrounded by a sea, or cloud, of electrons

5. Which of the following does not have a giant structure?A. DiamondB. Graphite

C. IodineD. Silicon dioxide

6. Which one of the following is not true of metallic bonding?A. it gives rise to excellent electrical conductivityB. electrons are free to move throughout the structure C. the strength of metallic bonds increases down a groupD. the strength of metallic bonding affects the boiling point of metals

7. Which of the following equations represents reduction?A. C + O2 CO2

B. Al3+ + 3e- AlC. 2O2- O2 + 2e-

D. 2H2+ O2 2H2O

8. Which statement about atomic structure is incorrect?A. The proton (atomic) number gives the number of protons in an atom or ionB. For an element the number of electrons is the same as the number of protonsC. The number of protons is different in an isotope of an elementD. The number of neutrons can be worked out by subtracting the atomic number from the mass

number

9. Which statement about the Halogens is incorrect?A. They exist as diatomic molecules like Cl2

B. They have 7 electrons in the outer shellC. The reactivity decreases down the groupD. They form positive ions in reactions

10. Which statement about sodium is incorrect?A. It burns with a purple flameB. It reacts with water to form an alkaline

hydroxide

C. It forms positive ionsD. It is a soft metal

11. Which of the following statements best explains why silicon dioxide has a high melting point?A. It has a giant ionic structure with strong electrostatic attraction between ionsB. It has a giant covalent structure with strong covalent bonds between atomsC. It has a simple molecular structure with weak forces between moleculesD. It has a giant metallic structure with a strong attraction between positive ions and the sea of

electrons

12. Which of the following is not a property of ionic compounds?A. Conduct electricity in solid formB. High melting pointC. Regular crystal arrangementD. Highly soluble in water

13. Which of the following is not true about covalent compounds?A. They are formed when non-metals bond togetherB. All covalent compounds have high melting pointsC. Covalent bonds are formed when electrons are sharedD. Covalent compounds don’t conduct electricity in any form

14. Which of the following contain covalent bonds (more than one answer may be right)?A. O2

B. NaClC. MgD. SiO2

E. AuF. LiBr

15. Carbon is the main element present in molecules in the biosphere. How many bonds does an atom of carbon form?

A. 2 B. 3 C. 4 D. 5

16. Which element is present in proteins but not in carbohydrates?A. Carbon B. Hydrogen C. Oxygen D. Nitrogen

17. Which of the following statements about electrolysis is incorrect?A. Electrolysis only works when the electrolyte is molten or in solutionB. Electrolysis is used to extract reactive metalsC. Electrolysis causes no pollutionD. Electrolysis is a continuous process

18. Which of the following is the electron arrangement of an element in group I?A. 2,8 B. 2,8,1 C. 2 D. 2,8,8

19. Which of the following is the electron arrangement of an ion of a group I metal?A. 2,8 B. 2,8,1 C. 2,8,2 D. 2,8,3

20. Which of the following gives the best explanation for the fact that sodium chloride has a regular crystal arrangement?

A. It contains ionic bonds which are very strongB. It contains a regular 3D arrangement of positive and negative ionsC. It contains ionsD. The ions are free to move