Chemistry Paper 2: Chemical Analysis

Select all boxes that represent an element only

Select all boxes that represent a mixture of substances

Select all boxes that represent a pure substance

Select all boxes that represent a single compound only

A pure substance is made of only ​ (a)   type of element or ​ (b)   , this means its has a specific ​ (c)   or boiling point.

• one
• compound
• melting
• 2
• mixture
• purity

Organise these options into the right categories

Groups:

(a) Pure

,

(b) Formulation

• Face cream

• A single melting poing

• A range of melting points

• Only one element or compound

• Distilled Water

• Mixture designed to be useful

Label the Diagram

a

b

c

d

Origin Line (pencil)

Ink Spots (Solvent)

Solvent (Mobile Phase)

Chromatography Paper (Stationary Phase)

Which colour travels the furthest (most soluble)?

• Red

• Yellow

• Blue

• Green

Which ink could be considered a pure substance?

• A

• B

• C

Rf Value = Solute Distance / Solvent Distance

If the solute travelled 5.1cm up the page and solvent 7.2cm what is the Rf value?

(give your answer to 2sf)