Mixtures and solutions | Science | Quizalize & Oak National Academy

Starter quiz

Which picture shows an insoluble substance?
Mass is measured in __________.
- centimetres
- millilitres
- grams ✓
- centimetres-cubed
Sugar dissolves in water, so sugar can be described as a ______ solid.
- 'soluble' ✓
A ______ is a material formed from two or more substances which can be physically separated.
- 'mixture' ✓
Some students have been asked to describe this diagram using key terms. Who has used their key words correctly?
- That shows a pure liquid.
- I'm think that might be a liquid mixture.
- I'm fairly certain this shows an impure solid.
- I reckon that's a pure solid. ✓
Melting is a reversible, physical change. Which of the following statements is also true about melting?
- Melting is what happens when a substance disappears.
- Melting occurs when solid particles become more regularly arranged.
- Melting is the process of a substance disappearing in a liquid.
- Melting occurs when solid particles become more irregularly arranged. ✓

Select the two units used to measure mass.
- cm³
- km
- g ✓
- s
- kg ✓
Sugar will dissolve in tea. Sugar is ______ in tea.
- 'soluble' ✓
If salt is dissolved in water. How would you describe the solution formed?
- clear
- colourless ✓
- cloudy
- translucent
- opaque
Match the definition to the word.
- solute
  
  ⇔
  
  can dissolve in a liquid ✓
- solvent
  
  ⇔
  
  a liquid in which a substance can dissolve ✓
- solution
  
  ⇔
  
  formed when a substance dissolves in a liquid ✓
- insoluble
  
  ⇔
  
  unable to dissolve in a particular liquid ✓
If 52.3 g of copper sulfate, a soluble substance, is added to some water and the final mass of the solution is 97.6 g, what was the mass of water?
- 47.6 g
- 52.3 g
- 45.3 g ✓
- 97.6 g
- 42.3 g
A cross is drawn on two white tiles using marker pen. The pen's ink is soluble in acetone and insoluble in water. What will you see if the left is wiped with acetone and the right is wiped with water?
- A
- B
- C ✓
- D

Loading worksheet ...

Loading presentation ...

A solution is formed when a soluble solid dissolves in an appropriate solvent
In chemistry, mass is measured in grams (g)
The mass of substances that are mixed adds together to give the total mass of the mixture (mass is conserved)

Pupils confuse similarly sounding key terms; solute, solvent, solution, soluble, insoluble.

Spend time discussing ways to remember the differences, e.g. solvent has more letters = have more of it in the solution.

Solute - A solute is a substance that has dissolved into a solvent.
Solvent - A solvent is a substance into which a solute dissolves.
Soluble - When a solute dissolves, it is described as soluble.
Solution - When a solute and solvent combine, a solution forms.
Conservation of mass - The combined mass of starting materials equals the combined mass of the end products.