How can chromatography be used to identify substances?
Chromatography can be used to determine the RF value of an unknown substance. This RF value when cross-referenced with already known RF values can then be used as a guide to find out a potential range of substances from the origin that it could be. With this alongside other investigative methods, it is possible to identify unknown substances.
SW
Related Chemistry GCSE answers
All answers ▸Describe one method of producing oxygen gas.
24 g of Magnesium reacts with 16 g of Oxygen to produce 40 g of magnesium oxide. What mass of magnesium would you need to produce 10 g of magnesium oxide?
Aluminium is protected from rust by a layer of oxidised Al2O3. Can you write a balanced equation for the formation of this layer?
Explain why DNA replication is considered semi-conservative.