Glossary of terms

Question 1

paper chromatography

Answer 1

Paper chromatography is an analytical method used to separate colored chemicals or substances. It is primarily used as a teaching tool, having been replaced by other chromatography methods, such as thin-layer chromatography.

Question 2

chromatogram

Answer 2

a visible record (such as a graph) showing the result of separating the components of a mixture by chromatography.

Question 3

measuring cylinder aka graduated cylinder/ mixing cylinder

Answer 3

is a common piece of laboratory equipment used to measure the volume of a liquid

Question 4

conical flask aka Erlenmeyer flask/ titration flask

Answer 4

is a type of laboratory flask used to hold and mix chemicals. The small neck is to facilitate mixing without spilling.

Question 5

burette

Answer 5

is a graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations. It is a long, graduated glass tube, with a stopcock at its lower end and a tapered capillary tube at the stopcock’s outlet.

Question 6

Titration

Answer 6

a way of determining the concentration of an unspecified solution by determining the precise volume of acid or base that will completely react with it.

Question 7

Reaction rate

Answer 7

the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time