Lesson planning
guide
H2 Distillation
Learning objectives
i
ii
iii
Changes in state, evaporation and condensation.
Distillation as a separation technique to obtain a solvent from a solution.
Distillation is used to separate two liquids with different boiling points. (red only)
Scientific enquiry
iv
Explaining observation using an accepted theory. (Framework YTO Sc1 7g)
Suggested alternative starter activities (5–10 minutes)
Recap last lesson
Share learning
objectives
Word game
Capture interest (1)
Capture interest (2)
Pupils give definitions of
key words.
Find out about distillation.
Be able to separate a
solvent from a solution by
distillation. (Sc1)
Wordsearch on KS2
words to do with
dissolving and
separating.
Demonstrate boiling
water to show how
evaporation and
condensation occur.
Show a photo or video
clip of salty sea water.
Catalyst Interactive
Presentations 1
Suggested alternative main activities
Activity
Learning
objectives
see above
Description
Textbook H2
i, ii, iii and iv
Activity H2a
Practical
Activity H2b
Practical
i, ii and iv
Teacher-led explanation and questioning OR pupils work
individually, in pairs or in small groups through the in-text questions
and then onto the end-of-spread questions if time allows.
Pure water from sea water Pupils carry out small-scale distillation
of salt water using simple tube as the condenser.
Pure water from inky water Large-scale demonstration of ink and
water using a Liebig condenser with a thermometer to show that
the steam is at 100 °C.
i and ii
Approx
timing
20 min
Target group
C
H
E
S
R/G G
R
S
15 min
15 min
Suggested alternative plenary activities (5–10 minutes)
Review learning
Sharing responses
Group feedback
Word game
Looking ahead
Pupils (in pairs) explain
the main stages of the
process of distillation,
using a flow chart.
Pupils share their choice of
particle diagrams to
represent the distillation of
salt water from Activity H2a.
Groups of pupils discuss
the demonstration of the
Liebig condenser in
Activity H2b.
Card sort
activity on
solute, solvent
and solution.
Pupils compare their ideas for
obtaining pure water from salty
water with the industrial
process of desalination.
Learning outcomes
Most pupils will …
 be able to describe distillation as
evaporation of the solvent from
a solution, followed by
condensation and collection.
Key words
distillation, water vapour, distilled
water, condenses
Some pupils, making less progress
will …
Some pupils, making more progress
will …
 be able to describe distillation as an
evaporation step followed by a condensation
step.
 be able to relate distillation, without prompting,
to their knowledge and understanding of
particles.
Out-of-lesson learning
Homework H2
Textbook H2 end-of-spread questions
If possible, groups of pupils can be taken to see the school still for making distilled water
© Harcourt Education Ltd 2003 Catalyst 1
This worksheet may have been altered from the original on the CD-ROM.
Sheet 1 of 1