State whether these items are metal or non metal, provide a reason why. 1. Electrical wires
2. Door handles
3. Radiator
4. Shelves in the chemical cupboard

please help!

1. Metal.

Electrical wires are used to conduct electricity. Electrons have to flow through the wires in order to run the circuit. Only metals provide delocalized electrons that are free to move.

2. Metals, (usually)

Door handles should be strong that doesn't break easily. Metals are durable and corrosion resistant. Some metal alloys (like brass) are also found to be self-disinfecting.

3. Metals.

Radiators are usually used for emitting heat. Metals are good conductors of heat, which makes them great for making radiators.

4. Metals, (usually)

Most metals used for making chemical cupboard shelves are corrosion resistant, which causes less damage when chemical was spilled.

1.Electrical wires - metals

They r used to conduct and transfer electricity from one place to another and therefor need to be made of metals [like copper] as they hv high electrical conductivity

Door handles - metals

They need to be corrosion resistant so dat they last longer and also there r smooth which makes it easier to hold them.

3.Radiator - metals

They r used for heat transformation and therefore they need to be made of metals as they hv high thermal conductivity [heat conductivity]

4.Shelves in the chemical cupboard - non metals

They need to be made of non metals as metals r reactive to chemicals and holes can be formed on them if a drop or two of chemicals fall on them.

Hope this helps