C1.3 Filtration

GCSE AQA Chemistry C1.3 Filtration

A complete lesson including exam questions, an introduction to separating mixtures, a filtration introduction and practical.

Worksheet adapted from AQA for filtration practical. Student practical worksheet includes learning outcomes, method and then summary questions. Aim: To filter sandy sea water to separate water, salt and sand.

Success Criteria:
State the differences between compounds and mixtures.
 Describe how compounds and mixtures are created.
 Explain ways in which compounds and mixtures can be separated.

Do Now: Exam style question. (Link to previous lesson)

Main:

1. Students to answer various questions regarding mixtures and compounds. (Give two examples of compounds. Give two examples of mixtures. State 3 differences between mixtures and compounds. State 2 similarities between mixtures and compounds.)

2. Teacher Demo. Teacher to show various substances and to question students on how to create compounds and mixtures. Teacher to show a piece of magnesium and ask students how to turn into a compound (Burn in oxygen). Teacher demo of oxidation of magnesium. Students must use wielding filters. Teacher to show beakers of water / sand / stones / dirt and ask students how to create a mixture. This can be demoed by a student.
   Students to now be asked to consider how to separate these compounds and mixtures back into elements.

3. Students to consider how to separate mixtures. Complete the separating mixtures intro sheet.

4. Filtration of mixtures practical. Sheet included.

Plenary:
Filtration summary questions.

PRACTICAL: FILTRATION