Topic 8; Chemical Analysis Flashcards
1
Q
What is a pure substance?
A
Single element or compound, not mixed with any other substance
2
Q
What is a formulation?
A
Mixture of compounds in measured quantities, designed as a useful product
3
Q
What is an example of some formulations?
A
Paint, fuel, medicines, fertilisers
4
Q
How is Rf calculated?
A
Distance moved by the spot / distance moved by the solvent
5
Q
Describe the tests for hydrogen, oxygen, CO2 and chlorine
A
Hydrogen; pop with burning splint over gas
Oxygen; glowing splint relights
CO2; turns limewater milky
Chlorine; bleaches damp litmus paper making it white