2 Separating substances

Question 1

What is a saturated substance?

Answer 1

No more solute can dissolve at a specific temperature

Question 2

Melting/Boiling points of a pure substance.

Answer 2

A pure substance has a definite, sharp, melting and boiling point.

Question 3

What happens to the melting/boiling point of an impure substance?

Answer 3

1. Its melting point falls, boiling point rises
2. Melts and boils over a range of temperatures, not sharply

Question 4

Define elements

Answer 4

Contain only one kind of atom

Question 5

Define compounds

Answer 5

made of atoms of different elements chemically combined together

Question 6

Mixtures

Answer 6

contains more than one substance physically mixed together, and not chemically combined together