Topic C8- Chemical Analysis

Question 1

What is a pure substance?

Answer 1

Something that only contains one compound or element

Question 2

What are formulations?

Answer 2

Useful mixtures with a precise purpose that are made by following a formula

Question 3

What is paint composed of?

Answer 3

Pigment
Solvent- used to dissolve the other components and alter the viscosity
Binder
Additives- added to further change the physical and chemical properties of the paint

Question 4

What are 3 examples of formulations?

Answer 4

Cleaning products
Fuels
Cosmetics

Question 5

What is the mobile and stationary phase during chromatography?

Answer 5

Mobile- The solvent
Stationary- The chromatography paper

Question 6

How do you work out the Rf value for a chemical?

Answer 6

Distance travelled by substance / distance travelled by solvent