Elements, Compounds and Mixtures - Revision 1

Matter is something that occupies space and has ___.

Pure substances are made up of single type of atoms that are known as compounds.

• True

• False

Oxygen, Hydrogen, Water and Ammonia are examples of mixtures.

• True

• False

A substance made by ___ mixing two or more pure substances is known as a mixture.

• Physically

• Chemically

Pure substances can be separated using physical methods of separation.

• True

• False

Pure substances have a definite composition that does not change with time.

• True

• False

Pure substances are further classified as elements and ___.

Mixtures are further classified as homogeneous and ___ mixtures.

An ___ is the smallest unit of an element.

Metals are good conductors of heat and electricity, except ___.