You can tell if a solution is saturated because:

• It will be transparent.

• there will be bits of undissolved solid in it.

• it will be coloured.

• it will be hot.

Only 20 g of a salt will dissolve in 100 g of water at room temperature. If you use hot water instead:

• less than 20 g will dissolve.

• only 20 g will dissolve.

• more than 20 g will dissolve.

• no salt will dissolve.

You cannot separate a solution by filtering because:

• the particles of solvent are too big to go through the holes in the filter paper.

• the particles of solute are too big to go through the holes in the filter paper.

• the particles of solvent are small enough to go through the holes in the filter paper.

• the particles of solute are small enough to go through the holes in the filter paper.

Which is the best explanation of what happens when sugar dissolves in water?

• The sugar particles stick together.

• The sugar particles split up.

• The sugar particles split up and mix with the water particles.

• The water particles split up.

What is the mass of the following solution?

• 90g.

• 100g.

• 110g.

• None of the above.

What will be the total mass of the solution if you add 50 grams of salt to the solvent?

• 50 grams.

• 200 grams.

• 250 grams.

• None of the above.

What will be the total mass of the solution if you add 50 grams of salt to the solvent?

• 50 grams.

• 100 grams.

• 150 grams.

• None of the above.

A solution that contains as much dissolved solid as it possibly can is known as a saturated solution.

• True.

• False.

For most solids, more solids dissolves when the water is ..................

• colder.

• warmer.

Solubility is the amount of solid that will dissolve in one hundred grams of a liquid.

• True.

• False.