Unit 2: Experimental Techniques Flashcards
1
Q
Time
A
Stopwatch
2
Q
Temperature
A
Celsius theromometer
3
Q
Volume
A
Measuring Cylinder
4
Q
Mass
A
Electronic Balance
5
Q
Titrations
A
Burette
6
Q
Mobile phase
A
when the substances separate according to their solubility
7
Q
stationary phase
A
The substance that is the most soluble travels fastest and farthest up the paper
8
Q
Rf = Retention Factor
A
distance solute is traveled over distance solvent traveled
9
Q
List two characteristics of a pure substance
A
- a pure substance contains only one substance
* a pure substance melts and boils at a definite and predictable temperature
10
Q
The presence of an impurity in a substance can… (two points)
A
1) lowers the melting point
2) raises the boiling point