鉄や酸素は元素である。の英語

Iron and oxygen are elements.

Iron has an affinity for sulphur, and so does hydrogen for oxygen.

Copper and silver are both metals.

Iron is a useful metal.

Copper and tin are common minerals.

Water is composed of oxygen and hydrogen.

Brass is an alloy of copper and zinc.

Gold, silver and iron are all metals.

Iron is a useful metal.

Water consists of hydrogen and oxygen.

Lead is metal.

taking place in the presence of oxygen

Water is composed of oxygen and hydrogen.

Oxygen and nitrogen are gases.

graphite and diamond are allotropes of carbon

Water consists of hydrogen and oxygen.

The chemical symbol H expresses hydrogen.

brass is an alloy of zinc and copper

Oxygen and hydrogen make water.

of a material, to be oxidized

Brass is an alloy of copper and zinc.

Water is made up of hydrogen and oxygen.

Water is made of hydrogen and oxygen.

Water is comprised of hydrogen and oxygen.

Acid eats into metal.

to reduce oxygen from a substance

This substance is mostly composed of hydrogen and oxygen.

Salt is a useful substance.

of the percentage of oxygen in a substance, small

Iron is a useful metal.