C2.3 Structure and Bonding

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

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

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

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

5. Mention the physical properties of molecular structures

6. Two shared pairs of electrons are represented by

7. 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

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

9. State the characteristics of Molecular structures

10. Mention examples of a common covalent bond

11. Give examples of Giant covalent structures

12. Give examples of Molecular structures

13. The melting and boiling points in metals increase with

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

15. 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

16. A single shared paired of electrons is represented by

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

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

19. Define a Molecule

20. 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

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

22. 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

23. Why are metallic structure good conductors of electricity?

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

25. Mention the physical properties of ionic compounds

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

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

28. 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

29. Mention the 3 types of a bond

30. 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

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

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