Chapter 2 - Experimental Techniques Flashcards
1
Q
What is a solution?
A
A mixture by dissolving a substance in a solvent.
2
Q
What is a solute?
A
Substance that you dissolve. Eg:salt when making salt water
3
Q
What is a solvent?
A
Liquid in which you dissolve the substance.
4
Q
What is filtration?
A
Separating an insoluble solid from a liquid.
5
Q
What is crystallisation used for?
A
To separate solute from solution.
6
Q
What is simple distillation used for?
A
Separating solvent from solution.
7
Q
What is fractional distillation used for?
A
To separate two or more miscible liquids.
8
Q
Rf value formula
A
Rf=distance moved by substance/distance moved by solvent
9
Q
What is a mixture?
A
Two or more substances NOT chemically combined.
