The properties and uses of the chemical elements

Which element is liquid at room temperature?

• Sodium (Na)

• Mercury (Hg)

• Iron (Fe)

• Copper (Cu)

Are all metals hard?

• Yes. They are.

• No. Sodium (Na) can be cut easily with a knife.

Which metal is very malleable, and because of this, it is used to wrap sandwiches?

• Silver

• Aluminum

• Sodium

• Albal

Which non- metal is a good conductor of electricity as graphite?

• Carbon (C)

• Iodine (I)

• Phosphorus (P)

Which metal is used to make the filament of lightbulbs?

• Iron (Fe)

• Copper (Cu)

• Wolfram (W)

• Mercury (Hg)

Which metal has the highest melting point?

• Iron (Fe)

• Copper (Cu)

• Mercury (Hg)

• Wolfram (W)

Which metal is used to make wires because of its high ductility?

• Copper (Cu)

• Iron (Fe)

• Sodium (Na)

• Gold (Au)

Which element is the first one that has been made artificially?

• Iron (Fe)

• Sodium (Na)

• Technetium (Tc)

• Copper (Cu)

Which metal is biocompatible because it has a density similar to our bones?

• Wolfram (W)

• Titanium (Ti)

• Technetium (Tc)

It is one of the very few substances that turn from solid to vapour when it is heated. The vapour is purple.

• Bromine (Br)

• Chlorine (Cl)

• Iodine (I)