Solutions

Which of these is a property of a solution?

• It is always a solid

• It cannot dissolve in water

• It settles to the bottom if left undisturbed

• It allows light to travel straight through

Answer explanation

All solutions are transparent (even if they are coloured).

What happens to substances that dissolve in water?

• 
  They create a suspension

• They change color

• They break up into very small pieces

• They become insoluble

Answer explanation

They break up into tiny particles that can fit inbetween the water particles.

Which of these statements about solutes is NOT true?

• It can be a gas

• It can be a liquid

• It has to be a solid

• It dissolves in a solvent

Answer explanation

Gases can dissolve, liquids can dissolve and solids can dissolve.

What describes substances that do not dissolve in water?

• Insoluble

• Solution

• Sparingly soluble

• Soluble

Answer explanation

"Sparingly soluble" means it dissolves, but only a tiny bit.

Give the missing labels for this diagram, in their correct order.

• solid, liquid, gas

• solute, solvent, solution

• solution, solute, solvent

• solvent, solute, solution

Substances which dissolve in water are said to be ________ in water

What is the name given to a mixture of a solvent (like water) and an insoluble substances (like vegie oil) that has been shaken up to force the substances to mix for a while?

Which of the following are properties of suspensions?

• They are often not transparent

• The substance settles at the bottom of the container after a while

• They have a clear appearance

• They small bad

Milk is a type of mixture called a colloid. Colloids are a bit like suspensions because

• light can't pass through them

• everything is soluble

• suspensions are always white

• suspensions keep you in suspense

Milk is a type of mixture called a colloid. Colloids are NOT like suspensions because

• light can't pass through them

• material doesn't eventually settle at the bottom

• colloids are edible

• colloids dissolve in water