Asteroids are primarily rock and ice
Some asteroids are. Most are composed of a mixture of silicate minerals. Others are a mixture of the two.
pure substance
pure substance
Any substance made up of two or more elements chemically combined is a compound.
it is hydrogen and electrons
they r made from atoms put together to make 1 substance
Calcium and phosphorus are the two main minerals in bone.
It is a substance
amalgam is the substance made up of two or more other substance... basically its a mixture
A substance made of two or more elements that have been chemically joined is called a compound.
A Compound.
diatomic molecule