common elements and properties

gas

Hydrogen is a colourless, odourless, tasteless, highly flammable _____

Hydrogen

______ makes up 90% of atoms in the universe

Hydrogen

used in producing fertilizers

Hydrogen

can be separated from water or gasoline and be used as a source of fuel

Iron, steel

_____mixed with carbon to make_____.

structural, rust, water, oxygen

Iron is a good ______ material, but can _____ when mixed with ______ or _____

Oxygen, 21%

_____ is a gaseous element making up _____ of the atmosphere

Oxygen, elements

______ reacts with most other _____

sodium, water

_____ soft metal that reacts with _____

chlorine, toxic

yellow-green gas which is highly _____

mercury, liquid

______ is _____ at room temperature

silver, metal

precious _____ mined in BC

silicon, semiconductor, second

_____ is a brittle and grey _______ which is _____ most common element in earth’s crust