Task 2
Short Answer Questions
1a.

1b.

1c. 1d.

1e.

1f.

2a.

2b.

2c.

2d.

2e. 2f.

3. Draw a labelled diagram showing the bonding that occurs within a piece of potassium.
Potassium is a metal that has one electron in its outer shell. It is a metal therefore contains delocalised electrons.
4a.
4b.

4c.

4d. 5a. Electricians’ screwdrivers have plastic handles but the shaft of the screwdriver is metal.( Still need to find diagrams)
`Electrician screwdriver shafts are made of metal as metal s are very strong and usually do not get damaged easily. This ensures that the screwdrivers are durable and the head does not get damaged through use. The electrician screwdrivers have plastic …show more content…
Electronic circuits
Gold is a very good conductor of electricity. It is able to absorb heat and does not tarnish in air. It can be worked into extremely thin sheets or fine wires. It has a high melting point (1063°C), which makes it perfect for electronic circuits since it can conduct electricity, absorb heat (which prevents overheating, which can potentially damage the wires). Since gold is malleable, it can easily be made into fine wires hence making it suitable for electronic circuits.

c. shields in spacecraft
Though gold is expensive, Gold does not rust or tarnish in air the way copper or silver do, and as such, requires less care and maintenance. Gold is an excellent conductor while resisting corrosion and the build-up of static electricity. Furthermore, it has the ability to reflect infrared radiation and helps stabilize the temperature of a spacecraft, which is highly essential. Without this coating, dark coloured parts of the spacecraft would absorb significant amounts of heat, which can be very dangerous. Until a new, cheaper and suitable alternative is found, Gold is utmost essential in spacecraft shields.

Classify each of the following substances as metallic, ionic, covalent molecular or covalent network. Give your reason to support your