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Topic 4: Chemical bonding

8. Network solids and coordinate covalent bonding: Recalling concept facts and definitions
1. The bonding in network solids is
1) Ionic 2) Covalent 3) Metallic 4) Hydrogen

2. Substances containing network solid bonding contain
1) Particles that are molecule 3) Particles that are metallic
2) Particles that are ions 4) No discrete particles

3. Network solid bonding forms substances that have
1) Low melting points 3) High electrical conductivity
2) High melting points
4) High solubility in water

4. A coordinate covalent bonding is formed when
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1) An atom transfers one of its electron to a hydrogen ion
2) An atom shares one of its electron with a hydrogen ion
3) An atom transfers two of its electrons to a hydrogen ion
4) An atom shares two of its electron with a hydrogen ion

5. A coordinate covalent bond can be form between
1) A hydrogen ion and a hydrogen atom of ammonia molecule
2) A hydrogen ion and a nitrogen atom of ammonia molecule
3) A sodium ion and a hydrogen atom of ammonia molecule
4) A sodium ion and a nitrogen atom of ammonia molecule

6. A coordinate covalent bonding will form by interaction between
1) A hydrogen ion and an oxygen atom of a water molecule
2) A hydrogen ion and a hydrogen atom of a water molecule
3) A chlorine ion and an oxygen atom of a water molecule
4) A chlorine ion and a hydrogen atom of a water molecule

7. Which two substances can form a coordinate covalent bond with a proton?
+
1) NH3 and NH4 + 3) NH3 and H2O +
+
2) H2O and H3O 4) NH4 and H3O

9. Metallic bonding: Recalling concept facts and definitions

1. Metallic bonding is best described as
1) Positive ions in the sea of positive electrons
2) Positive ions in the sea of mobile electrons
3) Negative ions in the sea of positive electrons
4) Negative ions in the sea of mobile electrons
2. Metallic bonding occurs between metal atoms that have
1) Filled energy levels and low ionization energy
2) Filled energy levels and high ionization energy
3) Unfilled energy levels and low ionization energy
4) Unfilled energy levels and high ionization energy

3. The ability to conduct electricity in the solid state is a characteristic of metallic substances. This
characteristics is best explained by the presence of
1) High ionization energy
2) High electronegativity

3) Mobile protons
4) Mobile electrons
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