Introduction

Question 1

Many substances ___ in water.

Answer 1

Dissolve

Question 2

How do substances dissolve in water?

Answer 2

There are tiny spaces between the water molecules. When something like sugar dissolves, each grain breaks up into thousands of tiny sugar particles. These particles spread out and fit into the spaces between the water molecules.

Question 3

When molecules ___ they spread out from where there are lots of them (a _____ concentration) to where there aren’t many of them (a ____ concentration). They do this until they spread evenly. (Equilibrium)

Answer 3

Diffuse
High
Low

Question 4

What is a solution?

Answer 4

A solution is made up of two parts, the solute and the solvent.

Question 5

What dissolves into the solvent?

Answer 5

The solute

Question 6

What happens if you dissolve sugar in water?

Answer 6

A sugar solution

Question 7

The solute is not always a ___ like sugar. Liquids and gases can be solutes as they can dissolve in solvents too.

Answer 7

Solid

Question 8

What is a concentrated solution?

Answer 8

A concentrated solution has a lot of solute dissolved in the solvent.

Question 9

What is a dilute solution?

Answer 9

A dilute solution has a small amount of solute dissolves in the solvent.