CKS3: Yr7 Chemistry Unit 1 – Me the the Scientist!
Lesson number: 6.
Lesson Title: Neutralisation
Learning Outcomes
How I did
Learning Outcome 1:
Understand what are neutralisation
reactions.
Level 5
I am working at
I can move up to
Connector:
level .....because
level…... by
.............................. ………………………
........................
…………………
Recall: Complete the quiz
on the next slide.
I am working at
I can move up to
level .....because
level…... by
.............................. ………………………
........................
…………………
Learning Outcome 2:
Plan an experiment to test how
effective different antacids are.
Level 6
Learning Outcome 3:
Use your knowledge to explain
everyday applications of
neutralisation
Level 7
I am working at
level .....because
..............................
........................
Targets
I can move up to
level…... by
………………………
…………………
11:30
Quiz on acids and alkalis
•Acid, alkali or both???
1) This has a pH of less than 7
2) This could kill cells
3) This is often used in cleaners or soap
4) This would turn Universal Indicator red
5) Sodium hydroxide is a common ____________
6) This would feel soapy on your skin
7) This could be a corrosive
8) This will turn universal indicator purple
9) This would taste sour
10) Lemon juice and vinegar are examples of weak _____
Extended Learning
• Research information and Collect Secondary data on:
• Write a page of A4 explaining your understanding of
acids and alkalis, neutralisation, chemical reactions,
word equations and anything thing else you have
learnt during this unit.
• Due date:
• Next lesson
• Research Report Criteria (6 marks total = Level 7):
• 1) Range of different reliable sources used and references
included (books/internet/survey etc),
• 2) Information written in own words
• 3) Clear and logical structure to research report including
pictures/diagrams which have been referenced
• 4) No evidence of copy and paste!
11:30
BIG picture
Key Question:
• What skills will you be developing this
lesson?
• Scientific Investigation skills- by Research
and Collecting Secondary data, Planning and
Collecting primary data, Analysis and
Evaluation.
• Numeracy- by using formulae in calculations
• Literacy- by writing well structured sentences
and paragraphs
• ICT- by using Laptops and electronic
resources
• Personal skills- team work, leadership
• Thinking and Learning skills- organisation,
logic, participation, memory, exploration,
creativity, judgement, planning, practice.
• Reflection- through self or peer assessment of
each Learning Outcome
•How is this lesson
relevant to every day
life?
•Useful acid and alkali
reactions are applied in
food preservation, soil
treatment, hair and skin
care and bee stings
•Quick Discussion:
•What do you
already know?
11:30
Keywords:
• Neutralisation
• Acid
• Alkali
• Neutral
• Indicator
• Antacid
• Universal indicator
• Variables
Here are some of
the words we will
be using this
lesson…
1) Create sentences
which use the
keywords correctly.
2) Put your hand up
if there is any key
word from the list
that you don’t know
the meaning of.
11:30
New Information for Learning Outcome 1
Explore and Discover:
• Visual: Demonstration - What is neutralization?
•The chemical reaction between an acid and an alkali
•is called neutralization.
acid
alkali
a salt
water
•What happens to the pH value of the reaction mixture during
neutralization?
•The pH value of the reaction mixture becomes closer to 7.
• Audio:
• Kinaesthetic:
11:30
11:30
Neutralisation
•Something that is not an acid or an alkali is said to
be NEUTRAL
•Water is an example of a NEUTRAL SOLUTION
•An acid and alkali will neutralise each other if the
correct amounts are used:
•Acid + alkali
Salt + water
•E.g. hydrochloric acid + sodium hydroxide
sodium chloride + water
11:30
Learning Activities for Outcome 1
Worksheet 4.6.1 or Rainbow fizz
• Predict what will happen after you read the method
• Carry out experiment to see what happens when you
add acids and alkalis together
• Record Results
Extension:
1. Explain why the colours changed.
2. Does the reaction have a name?
3. Can you write a word equation to describe the
reaction?
11:30
11:30
Demonstrate your
Learning for
Outcome 1
Keywords:
•Neutralisation
• Acid
Create
• Alkali
• Neutral
Evaluate
Apply (L5)
Can you explain why the
colours changed
Can you write a word
equation for the reaction?
11:30
Which task(s)
will you
Analyseto
choose
complete?
Try to target a
Apply
level
higher
than your
current
level.
Understand
Remember
• Indicator
Understand (L4)
Have recorded you
observations correctly
Learning Outcome 1: Review
Go back to your Learning Outcome grid and fill out
the ‘How I did’ and the ‘Targets’ column.
Learning Outcome
How I did
Targets
I am working at
level .....because
...........................
...........................
I can move up to
level…... by
……………………
……………………
Learning Outcome 1:
Level 5
11:30
New Information for Learning Outcome 2
Explore and Discover:
Antacids:
•Are usually alkaline and are used to neutralize stomach
acid
11:30
Learning Activities for Outcome 2
• What is the general word equation for
neutralisation?
• Plan an experiment to test which antacid is best
Extension
• What is your prediction and why?
• What are your variables?
11:30
•Learning Outcome 2: Review
11:30
Keywords:
Demonstrate your
Learning for
Outcome 2
•Neutralisation
• Acid
• Alkali
Create
• Antacid
• Universal indicator
• Variable
Evaluate
Apply (L5)
•Did you:
1. Complete the
experiment ?
2. Did you write a word
equation for the
reaction?
11:30
Which task(s)
will you
Analyse (L6)
Analyseto
choose
•Did you:
complete?
Try to target a 1. Plan an investigation?
Apply
level
higher 2. Identify the independent,
dependent and control
than your
variables.
current
level.
Understand
3. Complete the script and
rehearse the play on
neutralisation?
Remember
Learning Outcome 2: Review
Go back to your Learning Outcome grid and fill out
the ‘How I did’ and the ‘Targets’ column.
Learning Outcome
How I did
Targets
I am working at
level .....because
...........................
...........................
I can move up to
level…... by
……………………
……………………
Learning Outcome 2:
Level 6
11:30
New Information for Learning Outcome 3
Explore and Discover:
• Applications of Neutralisation
•Insect Stings
• Visual:
• Audio:
• Kinaesthetic:
Bee stings are acidic
and can be neutralised with
baking soda (bicarbonate of soda).
Wasp stings are alkaline and can
be neutralised with vinegar.
• Indigestion: Our stomach carries
around hydrochloric acid.
Too much of this leads to indigestion.
To cure indigestion, you can neutralise the
excess acid with baking soda or specialised
indigestion tablets.
11:30
Useful acid-alkali reactions
Food preservation – pickling involves soaking the
food in vinegar which kills the bacteria which
causes food to decay
Hair and skin care – the best pH for skin is 5.5.
Soaps containing very weak acids or alkalis can
be used to get this pH level
Stings – BEE stings are ACIDIC and are treated
using an alkali such as calamine lotion which
neutralises the acid of the sting. WASP stings
are ALKALINE and are neutralised using an acid
such as vinegar
Soil treatment – acid rain can turn soil acidic.
Some plants will not grow in acidic soil. The soil
is neutralised using LIME which is an alkali
Learning Activities for Outcome 3
•
•
•
•
•
Questions
Acid rain can be reduced by:
1) (a) What is "acid rain"?
(b) Describe, in detail, how "acid rain" is formed.
2) Describe some of the problems caused by "acid
rain".
• 3) Describe 3 ways of reducing "acid rain" and
explain how each way does so.
11:30
Demonstrate your
Learning for
Outcome 3
Evaluate (L7)
Judge Justify Defend
Decide Agree Value Prove
Check Criticise
Recommend Support Test
Keywords:
Acid rain, Fuel
Neutralisation
Create
Nitrogen dioxide
Evaluate
Which task(s)
will you
choose
to
Analyse
complete?
Try to target a
level higher
thanApply
your
current level.
Understand
11:30
Sulphur dioxide
Remember
Catalytic converter
scrubbers
Analyse (L6)
Have you plan your
investigation and identified the
variables?
Learning Outcome 3: Review
Go back to your Learning Outcome grid and fill out
the ‘How I did’ and the ‘Targets’ column.
Learning Outcomes
How I did
Targets
I am working at
level .....because
...........................
...........................
I can move up to
level…... by
……………………
……………………
Learning Outcome 3:
Level 7
11:30
Review
• Compare acids and alkalis.
• Name the type of reaction that occurs
when an acid and an alkali are added
together.
• Predict the products of adding
hydrochloric acid to sodium hydroxide.
11:30
Quiz busters
• Boys Vs Girls
• Only use each player once.
• Try to complete a line in your colour
across or down the board.
Review
• Swap books with the person next to you and look over
their work. Write a WWW and EBI statement.
• Stand up if you have developed some skills this lesson?
What are they?
• Tell the person next to you three things you have learnt
this lesson.
• Did you successfully complete tasks at your target level?
• If not, what do you need to do next in order to meet your
target level? Record this in your diary to be done as part
of your extended learning at home.
• Is there any part of the lesson you think you need to go
over again next lesson?
• How will you remember what you have learned today for
your exam?
11:30
•Technician list
•A range of antacids
•Universal indicator
•three test tubes,
•distilled water,
•glass beaker,
•dilute acid,
•safety glasses.
•very hot water,
•100cm³ measuring cylinder
•Sodium bicarbonate