Checkpoint Task Reactivity Of Metals Instructions And

checkpoint task =============== reactivity of metals ==================== instructions and answers for teachers --------

Checkpoint Task
===============
Reactivity of Metals
====================
Instructions and answers for teachers
-------------------------------------
These instructions cover the student activity section which can be
found on page 5. This Checkpoint Task should be used in conjunction
with the KS3-4 GCSE (9-1) Twenty First Century Science Chemistry B
Transition Guide: Reactivity of Metals, which supports OCR GCSE (9-1)
Twenty First Century Science Chemistry B.
When distributing the activity section to the learners either as a
printed copy or as a Word file you will need to remove the teacher
instructions section.
Introduction
The checkpoint task is called the ‘reactivity challenge’. There are
three mini activities that become progressively more challenging. The
task is designed to initially assess learners’ understanding of the
properties of metals in challenge 1, progressing to displacement in
challenge 2 and finally writing balanced equations in challenge 3. The
organisation of the activity will depend on the nature of the group.
With motivated high ability, or competitive groups it would be ideal
to turn each challenge as a race. Less confident or lower ability
groups may prefer to work through it at their own pace. However, as
the activity covers a range of skills it would be beneficial to check
answers after each challenge. Problems and barriers with the
individual challenges can be resolved challenge by challenge. These
tasks will enable the class teacher to assess what knowledge and
skills can be recalled from the Key Stage 3 topic before moving into
the GCSE content. Answers are provided in the teacher’s section.
Teacher preparation
To run this activity you could either split your group into small
groups or ask them to work individually. You may wish to supply
learners with periodic tables, or you may have chosen to watch some of
the videos suggested in the transition resources to refresh learners’
knowledge.
Challenge 1 – Properties of metals
Complete the table using your knowledge of metals. The first one has
been done for you.
Metal
Property
Use
Copper
Conducts electricity
Electrical wires
Aluminium
Conducts heat
Sauce pans
Gold
Malleable, unreactive
Jewellery
Iron
Strong
Bridges
Challenge 2 – Displacement
You could ask the learners to complete this experiment instead of
giving the results.
Some learners did an experiment and observed reactions with the
following metals and their metal ion solutions. They placed ticks and
crosses when they saw a reaction take place.
Copper sulphate
Magnesium sulphate
Zinc
sulphate
Aluminium sulphate
Copper
x
x
x
x
Magnesium

x


Zinc

x
x
x
Aluminium

x

x
Write a word equation for each of the reaction where there is a tick.
Magnesium + copper sulfate  magnesium sulfate + copper
Magnesium + zinc sulfate  magnesium sulfate + zinc
Magnesium + aluminium sulfate  magnesium sulfate + aluminium
Zinc + copper sulfate  Zinc sulfate + copper
Aluminium + copper sulfate  aluminium sulfate + copper
Aluminium + zinc sulfate  aluminium sulfate + zinc
Challenge 3 – Reactivity equations
Complete the word equations and then write balanced equations for the
reactions.
Copper + hydrochloric acid  copper chloride + hydrogen
Cu + 2HCl  CuCl2 + H2
Copper + sulfuric acid  copper sulfate + hydrogen
Cu + H2SO4  CuSO4 + H2
Copper + nitric acid  copper nitrate + hydrogen
Cu + 2HNO3  Cu(NO3)2 + H2
Magnesium + hydrochloric acid  magnesium chloride + hydrogen
Mg + 2HCl  MgCl2 + H2
Magnesium + sulfuric acid  magnesium sulfate + hydrogen
Mg + H2SO4  MgSO4 + H2
Magnesium + nitric acid  magnesium nitrate + hydrogen
Mg + 2HNO3  Mg(NO3)2 + H2
Zinc + hydrochloric acid  zinc chloride + hydrogen
Zn + 2HCl  ZnCl2 + H2
Zinc + sulfuric acid  zinc sulfate + hydrogen
Zn + H2SO4  ZnSO4 + H2
Zinc + nitric acid  zinc nitrate + hydrogen
Zn + 2HNO3  Zn(NO3)2 + H2
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Checkpoint Task
===============
Reactivity of Metals
====================
Learner Activity
----------------
Introduction
These three challenges are to check your understanding from Key Stage
3.
Challenge 1 – Properties of metals
Complete the table using your knowledge of metals. The first one has
been done for you.
Metal
Property
Use
Copper
Conducts electricity
Electrical wires
Sauce pans
Jewellery
Bridges
Challenge 2 – Displacement
Some learners did an experiment and observed reactions with the
following metals and their metal ion solutions. They placed ticks and
crosses when they saw a reaction take place.
Copper sulphate
Magnesium sulphate
Zinc
sulphate
Aluminium sulphate
Copper
x
x
x
x
Magnesium

x


Zinc

x
x
x
aluminium

x

x
Write a word equation for each of the reaction where there is a tick.
The first one has been done for you.
Magnesium + copper sulfate  magnesium sulfate + copper
Extension task
Challenge 3 – Reactivity equations
Complete the word equations and then write balanced equations for the
reactions.
C opper + hydrochloric acid  copper chloride + hydrogen
Cu + 2HCl  CuCl2 + H2
C opper + sulfuric acid 
C opper + nitric acid 
M agnesium + hydrochloric acid 
M agnesium + sulfuric acid 
M agnesium + nitric acid 
Zinc + hydrochloric acid 

Z inc + sulfuric acid 
Z inc + nitric acid 
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