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CKS3: Yr8 Chemistry Unit 4 – The chemical patterns that make my world
Lesson number: 2
Lesson Title: Reactivity series of metals- metals and acid
Learning Outcomes
Learning Outcome 1:
Describe how to test for the gas
produced when a metal reacts with an
acid
Level 5
How I did
Targets
Connector:
(Level 4)
How do you know a chemical reaction
is taking place?
Think
Pair
Share
Learning Outcome 2:
Explain why hydrogen gas is produced
and express these reactions as
balanced symbol equations
Level 6/7
Learning Outcome 3:
Controlled assessment: Carry out the
assessed task on reactions of metals
and acid (Acid fizz)
11:55
TJ
BIG picture
Key Question: Why is hydrogen gas
produced when an acid reacts with a metal?
• What skills will you be developing this lesson?
• HSW- by planning and carrying out an
investigation/ Interpreting data/ evaluating an
experiment
• Literacy- by writing explanations using correctly
spelt keywords and good grammar.
• Team work- during a practical investigation
• Participation- during a practical activity
• Reflection- through self and peer assessment of
each outcome
•How is this
lesson relevant
to every day
life?
Where does this lesson
fit in to the rest of the
topic? Lesson 2
•Quick Discussion:
•What do you
already know?
Keywords:
Create sentences using the keywords to show that you know what they mean.
Put your hand up if there is any key word from the list that you don’t understand.
• Hydrogen
• Copper
• Metal
• Zinc
• Chemical reactions
• Lighted splint
• ‘Squeaky pop’
• Reactivity
• Magnesium
• Iron
New Information for Learning
Outcome 1
• Visual: Demonstration
• Audio: Demonstration
• Kinaesthetic: Class experiment
New Information for Task 1
What happens when we put Magnesium into
hydrochloric acid?
New Information for Task 1
Many metals react with acids.
When this happens the metal
fizzes as bubbles are produced.
hydrogen
burning
splint
What do the bubbles mean?
Do all the metals react
A gas is produced.
equally to acids?
magnesium +
acid
How can you test to find out if the gas produced is hydrogen?
Place a burning splint next to the mouth of test tube.
A ‘squeaky pop’ as the gas ignites shows that hydrogen
is the gas produced in this reaction.
Learning Activities for
Outcome 1
• Your task is to carry out the reaction
between acid and metal.
• You will also carry out a test for the
reaction to show that it has taken place.
Learning Activities for
Outcome 1
• What equipment will you need?
•
•
•
•
•
•
•
•
4 test tubes
Test tube rack
Zinc, copper, magnesium and iron
Spatula
Splint
Hydrochloric acid
Bunsen burner
Heat proof mat
Keywords:
Demonstrate your Learning
for Outcome 1
I am working at level ....
because ...........
Create
Evaluate
Apply (L5)
Using the information
from the practical, can
you place the metals in
order from most reactive
to the least reactive
justifying your choice
Analyse
Analyse (L6)
Can you construct a general
word equation for the reaction
Apply
Understand
Remember
11:55
Understand (L4)
Describe what happened when
acid was added to the metals
and explain the test for the gas
produced
Learning Activities for
Outcome 1
• Order of reactivity :
magnesium
zinc
iron
copper
1. Which acid is a stronger acid? How do you know?
Learning Outcome 1: Review
Go back to your Learning Outcome grid and fill out the
‘How I did’ and the ‘Targets’ column.
Learning Outcome
Learning Outcome 1:
Describe how to test for the gas
produced when a metal reacts
with an acid
Level 5
How I did
Met?
Partly met?
Not met?
Targets
How can I improve
on Learning
Outcome 1?
New Information for Learning
Outcome 2
Why is Hydrogen gas produced
when a metal reacts with an
acid?
New Information for Learning
Outcome 2
Zooming into a microscopic level…..
We are going to look at the
surface of the magnesium in
hydrochloric acid
We are now inside the test tube!
Acid molecules
in the water
H
Cl
Cl
H
Cl
H
Cl
Cl
H
Cl
H
H
Acid molecules
in the water
Cl
Cl
H
H
Acid molecules
in the water
H
Cl
H
Acid molecules
Cl
Magnesium strip
in the water
H
H
Cl
Cl
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
We are now inside the test tube!
The acid particles have to touch the
magnesium to react with it
H
H
Cl
Cl
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
We are now inside the test tube!
The acid particles have to touch the
magnesium to react with it
H
H
Cl
Cl
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
We are now inside the test tube!
When
theymolecules
react the react
atomswith one
Two acid
re-arrange
into
magnesiumthemselves
atom
new molecules
H
H
Cl
Cl
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
We are now inside the test tube!
Hydrogen which is a
The atoms now make 2gas
newso bubbles up to
the surface
molecules
H
Magnesium
chloride which
stays in the
water
Cl
Cl
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
H
The magnesium
“disappears”
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
Mg
Mg
Mg Mg
Mg
Mg
Mg
New Information for Learning
Outcome 2
What is the general equation for when an acid
reacts with a metal?
Metal + acid  salt + Hydrogen
Can you use this to write equations for what the observation exercise?
Can you write symbol equations for the reactions of magnesium, iron,
zinc and copper with acid?
New Information for Learning
Outcome 2
For example:
Mg + HCl  MgCl2 + H2
Is this balanced?
Mg + 2HCl  MgCl2 +H2
Keywords:
Demonstrate your Learning
for Outcome 2
I am working at level ....
because ...........
Create
Evaluate
Apply (L5)
Using a model, explain
why hydrogen gas is
produced?
Analyse
Apply
Understand
Remember
11:55
Analyse (L6/7)
Can you write symbol
equations for the successful
reactions?
Learning Outcome 2: Review
Go back to your Learning Outcome grid and fill out the
‘How I did’ and the ‘Targets’ column.
Learning Outcome
Learning Outcome 2:
Demonstrate the concept of
acid reactions with metal
carbonates by making bath
bombs
Level 6
How I did
Met?
Partly met?
Not met?
Targets
How can I improve
on Learning
Outcome 2?
Learning Activities for Task 3
You will carry out an controlled assessment (acid
fizz)
Aim: complete cartoon strip and explain each step
Learning Activities for Task 3
To get level
You might have:
5
Drawn diagrams and described what happened in the reaction.
Drawn simple particle diagrams to represent the chemicals in the reaction.
Identified the elements and compounds.
Described the appearance and properties of the materials before and after the reaction
(classified as metals or non-metals).
6
Drawn accurate particle diagrams to describe the reaction.
Written the word equation for the reaction.
Used some symbols to represent some elements.
Described why the substances can be classified as elements or compounds.
Explained if the mass of the beaker and its contents will stay the same throughout the
reaction.
Carry out peer/self assessment
using this criteria
7
Drawn detailed and accurate particle diagrams to explain the reaction.
Accurately written the word and balanced symbol equation.
Explained if the mass of the beaker and its contents will stay the same throughout the
reaction.
Used these key words accurately: atom, molecule, element, compound.
Used knowledge of chemical reactions to make generalisations and described other similar
reactions.
Learning Outcome 3: Review
Go back to your Learning Outcome grid and fill out the
‘How I did’ and the ‘Targets’ column.
Learning Outcomes
Learning Outcome 3:
Write up a detailed account of
both practical's including word
equations and diagrams
Level 7
How I did
Met?
Partly met?
Not met?
Targets
How can I improve
on Learning
Outcome 3?
Review for Remembering
What have I learnt today??
When a ball is thrown at you, you need to say one thing
you have learnt form today’s lesson
Science Department
Lesson plan
Teacher information
4 test tubes
Test tube rack
Metals: Zinc, Iron, Magnesium and Copper
Spatula
Pipette
Hydrochloric acid
Splints
Bunsen burner
Heat proof mat
Provision:
1) EAL:
2) SEN:
Role of TA:
1)
2)
3)
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