Mixtures, Solutions & Separation — Drills · Grade 6 Science
Chapter: Matter, Mixtures & Water PropertiesWhat these drills covers
By the end of Mixtures, Solutions & Separation you should be able to:
- I can explain why the components of a mixture can be separated but those of a compound cannot.
- I can use solubility figures to predict how much of a solid will dissolve.
- I can choose a separation method by naming the property difference it exploits.
4 questions, multiple choice and written answer, each with a worked explanation.
Vocabulary used: solution, solute, evidence, system boundary, uncertainty.
Problem 1
- solution: A mixture with dissolved particles distributed through a solvent at the particle scale.
- A dissolved substance has ceased to exist.
- Removing visible particles automatically produces safe pure water.
- A sample with missing measurements has proved those values are zero.
Answer and explanation
solution: A mixture with dissolved particles distributed through a solvent at the particle scale.
A mixture with dissolved particles distributed through a solvent at the particle scale.
Problem 2
- Removing visible particles automatically produces safe pure water.
- solute: The substance dissolved in a solution.
- A dissolved substance has ceased to exist.
- Repeating any method makes every causal claim true.
Answer and explanation
solute: The substance dissolved in a solution.
The substance dissolved in a solution.
Problem 3
Answer and explanation
Dissolved salt passes through with the water. Removing visible sand does not establish pure water.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 4
Answer and explanation
No. Identify retained material, loss pathways, and measurement uncertainty before assigning a cause.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.