Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
4 Cards in this Set
- Front
- Back
|
What is a pure substance |
Contain only one thing |
|
|
How can you test for purity |
Using melting points if it sure it will have one specific shop melting and boiling point |
|
|
Describe experiment simple distillation |
Pour sample of seawater in the bottom of distillation flask set up a thermometer at the top condenser attached to it and the flask at the bottom of the condenser run cold water through condenser to keep it cool Heat the distillation flask gradually the substance with the lowest boiling point will evaporate first water vapour passing through condenser will condense and go into beakers where it’s collected |
|
|
Describe experiment for fractional distillation |
Put mixture into the flask attach a fractionating column with thermometer and condenser heat flask liquid with the lowest boiling point will evaporate first when the temp on the thermometer matches the boiling point of this liquid liquids with higher boiling points might start to evaporate but the column is cooler towards the top so they will only get part of the way up before condensing and running back down towards the flask |
