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BIG picture Quick Discussion: What do you already know? Nadia Habraszewski BIG picture HQFT Scaffold 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 Big Picture Ideas: Pose a problem/key Question for pupils to solve by the end of the lesson using the new understanding they gain along the way Select a wow factor video clip to stimulate pupil engagement Add in a music clip connected to the lesson subject and ask pupils to suggest links. Find a Youtube clip of a professional who works in a related field provide pupils with an overview of where this lesson fits in to the rest of the topic/module. Quick Discussion: What do you already know? Featherstone High School 2
Citation preview
15:58
CKS3: Yr8 Chemistry Unit 4 – The chemical patterns that make my world Lesson number: 2Lesson Title: Reactivity series of metals- metals and acid
Learning Outcomes How I did TargetsLearning Outcome 1: Describe how to test for the gas produced when a metal reacts with an acid Level 5
Learning Outcome 2:Explain why hydrogen gas is produced and express these reactions as balanced symbol equationsLevel 6/7
Learning Outcome 3:Controlled assessment: Carry out the assessed task on reactions of metals and acid (Acid fizz)
Connector: (Level 4)How do you know a chemical reaction is taking place?
Think Pair
Share
TJ
BIG picture
• 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
Key Question: Why is hydrogen gas produced when an acid reacts with a metal?
•Quick Discussion:•What do you already know?
•How is this lesson relevant to every day life?
Where does this lesson fit in to the rest of the topic? Lesson 2
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
• Metal
• Chemical reactions
• Lighted splint
• ‘Squeaky pop’
• Reactivity
• Magnesium
• Iron
• Copper
• Zinc
New Information for Learning Outcome 1
• Visual: Demonstration• Audio: Demonstration• Kinaesthetic: Class experiment
What happens when we put Magnesium into hydrochloric acid?
New Information for Task 1
magnesium + acid
hydrogen
burning splint
Many metals react with acids. When this happens the metal fizzes as bubbles are produced.
What do the bubbles mean?
A gas is produced.
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.
Do all the metals react equally to acids?
New Information for Task 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
Learning Activities for Outcome 1
15:58
Create
Evaluate
Analyse
Apply
Understand
Remember
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
Understand (L4)Describe what happened when acid was added to the metals and explain the test for the gas produced
Analyse (L6)
Can you construct a general word equation for the reaction
Demonstrate your Learning for Outcome 1
Keywords:
I am working at level .... because ...........
Learning Activities for Outcome 1
magnesium
zinc
iron
copper
1.Which acid is a stronger acid? How do you know?
• Order of reactivity :
Learning Outcome 1: Review
Learning Outcome How I did Targets
Learning Outcome 1: Describe how to test for the gas produced when a metal reacts with an acid
Level 5
Met?Partly met?Not met?
How can I improve on Learning Outcome 1?
Go back to your Learning Outcome grid and fill out the ‘How I did’ and the ‘Targets’ column.
New Information for Learning Outcome 2
Why is Hydrogen gas produced when a metal reacts with an
acid?
Zooming into a microscopic level…..
We are going to look at the surface of the magnesium in hydrochloric acid
New Information for Learning Outcome 2
We are now inside the test tube!
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
H
Cl
Magnesium strip
H
Cl
H
Cl
H
Cl
H
Cl
H
Cl
H
Cl H
Cl
H
Cl
H
Cl
H
Cl
H
ClAcid molecules in the water
Acid molecules in the water
Acid molecules in the water
Acid molecules in the water
We are now inside the test tube!
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
H
Cl
H
Cl
The acid particles have to touch the magnesium to react with it
We are now inside the test tube!
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
H
Cl
H
Cl
The acid particles have to touch the magnesium to react with it
We are now inside the test tube!
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
H
Cl
H
Cl
Two acid molecules react with one magnesium atomWhen they react the atoms re-arrange themselves into new molecules
We are now inside the test tube!
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg Mg
MgMg Mg Mg Mg MgMg Mg Mg Mg Mg Mg Mg
Mg
Cl
H H
Cl
The atoms now make 2 new molecules
Magnesium chloride which stays in the water
Hydrogen which is a gas so bubbles up to the surface
The magnesium “disappears”
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
15:58
Create
Evaluate
Analyse
Apply
Understand
Remember
Apply (L5)Using a model, explain why hydrogen gas is produced?
Analyse (L6/7)
Can you write symbol equations for the successful reactions?
Demonstrate your Learning for Outcome 2
Keywords:
I am working at level .... because ...........
Learning Outcome 2: Review
Learning Outcome How I did Targets
Learning Outcome 2:Demonstrate the concept of acid reactions with metal carbonates by making bath bombs Level 6
Met?Partly met?Not met?
How can I improve on Learning Outcome 2?
Go back to your Learning Outcome grid and fill out the ‘How I did’ and the ‘Targets’ column.
You will carry out an controlled assessment (acid fizz)
Aim: complete cartoon strip and explain each step
Learning Activities for Task 3
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.
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.
Carry out peer/self assessment using this criteria
Learning Outcome 3: Review
Learning Outcomes How I did Targets
Learning Outcome 3:Write up a detailed account of both practical's including word equations and diagramsLevel 7
Met?Partly met?Not met?
How can I improve on Learning Outcome 3?
Go back to your Learning Outcome grid and fill out the ‘How I did’ and the ‘Targets’ column.
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
4 test tubesTest tube rackMetals: Zinc, Iron, Magnesium and Copper SpatulaPipetteHydrochloric acidSplintsBunsen burner Heat proof mat
Science Department
Lesson plan
Teacher information
Provision:1) EAL:2) SEN:
Role of TA:
1)
2)
3)