Elements, Compounds, Mixtures and Separation Techniques

What are Elements?

• Elements are the simplest forms of substances and are made of only one kind of Atom.

• Elements are combinations of physically-bonded substances.

• Elements are atoms

________________ developed his own Atomic Theory.

• John Dalton

• James Chadwick

• Ernest Rutherford

• Robert Boyle

_________________ developed his own theory of Elements.

• Robert Boyle

• John Dalton

• Ernest Rutherford

• James Chadwick

Name the Process above.

• Decanting

• Centrifuging

• Evaporation

• Distillation

Name the Process above.

• Fractional Distillation.

• Simple Distillation.

• Evaporation.

• Centrifuging.

Name the Process above.

• Simple Distillation.

• Fractional Distillation.

• Evaporation.

• Crystalisation.

What are Mixtures?

• Mixtures consist of two or more physically-combined substances.

• Mixtures consist of two or more chemically-combined substances.

• Mixtures are pure substances.

• Mixtures consist of one substance only.

_______ of the Periodic Table's Elements occur naturally.

• 91

• 118

• 27

• 99

Chromatography is a

• Separation Technique.

• Mixture.

• Substance.

• Instrumental Technique.

Centrifuging is used when the solid particles are

• too small.

• too large.

• normal.

• heavy.