Principles of chemistry 1b

Question 1

Element

Answer 1

made up of only one kind of atom

Question 2

Compound

Answer 2

Made up of at least two different atoms chemically bonded together

Question 3

Mixture

Answer 3

Made up of elements, compounds or both that are separated as the different substances are not bonded together

Question 4

Identify purity of substance with melting point

Answer 4

Pure substances have a fixed melting point whilst mixtures have a range of melting points

Question 5

Simple Distilation

Answer 5

Separate a liquid from a solution

Question 6

Fractional distilation

Answer 6

Separte multiple liquids with different boiling points

Question 7

Crystalisation

Answer 7

Separate a solid from a solution by evaporation

Question 8

Paper chromatography

Answer 8

Separate liquids with different solubilities

Question 9

Same height in chromatogram..

Answer 9

Same solubility / same chemical