Elements, Compounds, Mixtures and Separating Techniques

A compound is a substance made up of ___________ different ________ which are chemically bonded together.

• two or more

• non-metals

• elements

• one or more

• metals

Iron is an example of a(n) (a)   .

Oxygen and Nitrogen are both examples of...?

• compounds

• elements

• mixtures

• none of the above

Mixtures can be easily separated.

• False

• True

Pure substances are made up of a single element or compound.

• True

• False

__________ is used to separate an insoluble solid from a liquid.

• Crystallisation

• Filtration

• Chromatography

• Distillation

Crystallisation separates a(n) ___________ from a solution.

• insoluble solid

• soluble solid

• gas

Salt can be obtained from a saturated solution by (a)   .

What would I use the above apparatus for?

• Separating a soluble solid from a solution.

• Separating a pure liquid from a solution.

• Separating a mixture of sand and salt water.

What is labelled X in this experiment?

• Evaporating basin

• Solvent vapour

• Solution

• Bunsen burner