Chemical Analysis

What colours are in the black ink? (Tick all correct answers)

• Red

• Blue

• Green

• Brown

• Yellow

​ (a)   is least soluble in the solvent because it ​ (b)   up the paper

• Red
• moves the least
• Green
• Blue
• moves the most

Calculate the R_f Value

Give your answer to 2 significant figures

(a)  

What is apparatus X on Figure 6?

• Boiling Tube

• Condenser

• Funnel

• Watch Glass

Calculate the mean mass of solid.

Do not include the anomalous result in your calculation.

Give your answer to 2 significant figures.

(a)  

What change of state is happening at the surface of the sea water in Figure 7?

• Melting

• Freezing

• Evaporating

• Condensing

The water in the test tube in Figure 7 is ​has ​ (a)  

• no salt
• more salt
• less salt

Match the following

• Air

• Compound

• Oxygen

• Element

• Carbon Dioxide

• Mixture

Match the following

• Hydrogen

• Glowing Splint

• Carbon Dioxide

• Litmus Paper

• Oxygen

• Limewater

• Chlorine

• Lit Splint

Which substance is a mixture?

• Air

• Gold

• Methane

• Nitrogen