Procedures in chemistry

Question 1

most common stationary phases for a TLC

Answer 1

Silica gel and alumina

Question 2

Fractional crystallization

Answer 2

refining substances based on differences in solubility

Question 3

Aqueous solution

Answer 3

water that contains one or more dissolved substance

Question 4

Formula for retention factor (Rf)

Answer 4

distance traveled by sample/distance traveled by solvent

Question 5

Homogenous solution

Answer 5

solutions with the same chemical makeup and properties throughout the solution

Question 6

Thin layer chromatography (TLC)

Answer 6

A special type of chromatography that uses a glass plate coated in silica gel as a stationary phase instead of a cellulose filter

Question 7

Seperation

Answer 7

Separatory funnel, different densities

Question 8

Heterogenous solution

Answer 8

solutions with different chemical makeup and properties throughout the solution

Question 9

Distillation

Answer 9

separation of two chemicals with two different boiling points

Question 10

Paper chromatography

Answer 10

separates components in solutions using a cellulose filter stationary phase that acts as a constraint on the parts of the solution, which staggers the speed that they float to the top of the type of solution in a mobile phase