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)