METALLIC BONDING

Metallic bonding is all about metals, such as mercury. Metals are such a useful resource, we use them in practically every aspect of our lives. From cars to cooking – everything involves metals in some way. The way in which their atoms are bonded gives metals some unique characteristics which are very useful to us. High melting and boiling points, lightness, lustre and conductivity are all properties that we take advantage of in some way.

1. What type of bonding is present in metals?

 A. Covalent

 B. Ionic

 C. Hydrogen

 D. Metallic

2. The bonding in metals is due to a strong attraction between…

 A. positive metal ions and a sea of negative electrons

 B. positive metal atoms and a sea of negative electrons

 C. negative metal atoms and a sea of positive electrons

 D. negative metal ions and a sea of negative electrons

3. Why do metals conduct electricity?

 A. The positive metal ions are free to move

 B. The negative electrons are free to move

 C. All the constituent parts can move through the metal

 D. The positive protons are free to move

4. Metals have…

 A. Low melting points because they have weak bonds

 B. Low melting points because they have strong bonds

 C. High melting points because they have weak bonds

 D. High melting points because they have strong bonds

5. Pick the correct statement about the arrangement of particles in a metal.

 A.The particles are arranged randomly and far apart

 B. The particles are arranged regularly and far apart

 C. The particles are arranged regularly and close together

 D. The particles are arranged randomly and close together

6. Superconductors…

 A. Work at any temperature

 B. Conduct heat better than other materials

 C. Have little or no resistance

 D. Conduct an orchestra really well

7. One drawback of superconductors is…

 A. Their behaviour is erratic

 B. They only work at VERY low temperatures

 C. They could enable super fast transmission of electricity

 D. hey could enable loss free power transmission

8. What does malleable mean?

 A. can be stretched into wires

 B. can be bent into shape

 C. is easily shattered

 D. is shiny

9. Metals are malleable because…

 A. a large amount of energy is required to slide one layer of electrons over another

 B. little energy is required to slide one layer of electrons over another

 C. little energy is required to slide one layer of ions over another layer

 D. a huge amount of energy is required to slide one layer of ions over another layer

10. If a potential difference is applied to a metal…

 A. the fixed electrons will stay in place and no current will pass through the metal

 B. the negative ions will move through the metal carrying the electrical current

 C. the delocalised ions will move through the metal carrying the electrical current

 D. the delocalised electrons will move through the metal carrying the electrical current

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