Metals vs Non-Metals

Question 1

Why is copper commonly used for electrical wiring?

Accepted Answer

It is a metal that is shiny, malleable, and a good conductor of electricity.

Answer

It is a metal that reacts vigorously with water.

Answer

It is a non‑metal with low reactivity.

Answer

It is a metal that is hard and brittle.

Question 2

Which statement best explains why copper is commonly used to make electrical wiring?

Accepted Answer

Copper is a good conductor of electricity because its outer electrons can move freely, and it is malleable, allowing it to be drawn into thin wires.

Answer

Copper is shiny, so it reflects electricity efficiently, making it ideal for wiring.

Answer

Copper has a high melting point, which prevents it from melting when electricity passes through it.

Answer

Copper is a non‑metal that does not react with air, so it remains unchanged in wires.

Question 3

Which element is most suitable for making a cooking pot, considering typical metal properties and its position in the periodic table?

Accepted Answer

Aluminum – a shiny, malleable metal that conducts heat well and is relatively unreactive.

Answer

Carbon – a non‑metal that is hard, does not melt easily, and is a poor conductor of heat.

Answer

Fluorine – a highly reactive gas that is non‑metallic and does not have metallic properties.

Answer

Sulfur – a brittle, non‑metal that does not conduct heat and reacts readily with oxygen.

Try three questions