C2.3 Structure and Bonding

1. Mention the name of the giant covalent structure which is formed by allotropes of carbon atoms bonded together to other carbon atoms by a strong covalent bond in an octahedral structure

2. Mention the physical properties of molecular structures

3. Two shared pairs of electrons are represented by

4. The melting and boiling points in metals increase with

5. Explain how do elements of period 3 react with water in their oxide compound

6. Why are metallic structure good conductors of electricity?

7. State the characteristics of Molecular structures

8. Why is molten ionic bond structure i.e. NaCl capable of conducting electricity?

9. Mention the name of the giant covalent structure which is formed by carbon atom in graphite bonded by 3 other carbon atoms by a covalent bond to form a hexagonal structure

10. Do metals have high melting and boiling points because of the strong metallic bond in their structure?

11. The chemical bond is the mutual force of attraction that holds the particles together when different elements combine during a chemical reaction.

12. Define a Molecule

13. Thermal and electrical conductivity increases with an increase in the number of delocalized electrons in the metallic structure

14. Give examples of Molecular structures

15. A coordinate bond is a type of covalent bond in which the shared pair of electrons forming the bond is contributed by only one of the atoms forming the bond.True or False

16. When atoms combine by sharing electrons their respective nuclei attract the shared electrons forming a covalent bond that holds the two atoms together e.g. H2 gas. True or False

17. Explain how do elements of period 3 react with either acid or alkali in their oxide compound

18. Mention the physical properties of ionic compounds

19. In the Molecular structure, the melting and boiling points increase with an increase in relative molecular mass however water with a relative molecular mass of 18 has a very high melting and boiling point compared to Hydrogen sulphide with a relative molecular mass of 34. Explain why

20. A single shared paired of electrons is represented by

21. Different forms of an element in the same physical state is called

22. Which of the following is not an example of an ionic compound?

23. The chlorides of sodium and Magnesium dissolve in water producing a neutral solution but for Sodium it results in a slight drop in temperature but Magnesium a small increase in temperature

24. Covalent bonding results in the formation of 2 types of structures. Name them

25. Give examples of Giant covalent structures

26. Mention the 3 types of a bond

27. Ionic bond involves complete transfer of valence electrons from one atom to another resulting in two ions with opposite charges True or False

28. Sodium and Magnesium form ionic chlorides while Aluminum and non-metals in period 3 form covalent chlorides

29. The chlorides of Aluminum and non-metals in period 3 hydrolyze in water to produce acidic solutions

30. Which of the following is an example of giant ionic structure?

31. Mention examples of a common covalent bond

32. In which state do ionic bond structure capable of conducting electricity?