Challenge!
Starter Task:
Write your answers on the white boards
1. List the properties of ionic
compounds
2. Compare the properties of ionic,
metallic and covalent substances
3. Predict the electric conductivity of
ionic, covalent and metallic
substances
Learning Objective:
Understand how to perform an
experiment to analyse the effect of
atomic radius on the reactivity of metals
Justify your
answer to Q3
using your
knowledge of
Bonding and
structure!
Think!
What is needed
for a substance
to conduct
electricity?
Learning Outcomes:
Identify the independent, dependent and controlled variables
Perform an experiment to determine the order of reactivity
Evaluate the method to suggest improvements
Properties of Ionic and covalent structures
Learning Objective
• Understand how to perform an experiment to analyse the Ionic and covalent
properties
Learning Outcomes
• Identify the independent, dependent and controlled variables
• Perform an experiment to determine the order of reactivity
• Evaluate the method to suggest improvements
Platinum:7
Bronze:4
Sssilver:5
Gold: 6
Understand how to perform an experiment to analyse the Ionic
and covalent properties
SC:
Evaluate the
SC
SC: Write a
1. Identify the Design an
method to
conclusion
independen experimental relating the
suggest
t,
procedure to structures of ionic improvements
dependent determine
and covalent
and control structure of a compounds
variables in compound
this
investigatio
n.
Task 1: Aim of Experiment
You have been given 3 different types of unknown solids.
Your task is to design an investigation to determine which solid is a
metal, covalent or ionic structure
1. Identify the independent variable in this investigation.
2. Identify the dependent variable in this investigation.
Write your answers in your one note page!
Learning Objective:
Understand how to perform an
experiment to analyse the Ionic and
covalent properties
Think!
What properties
should you
investigate to
differentiate
between the
solids?
Challenge Q!
Name another
type of variable
in a scientific
investigation
and explain its
importance.
Learning Outcomes:
Identify the independent, dependent and controlled variables
Perform an experiment to analyse the Ionic and covalent properties
determine the nature of compounds
Evaluate the method to suggest improvements
Task 1: Aim of Experiment
You have been given 3 different types of unknown solids.
Your task is to design an investigation to determine which solid is a
metal, covalent or ionic structure
List the properties of ionic compounds
ionic substance sheet
List the properties of covalent compounds on the ionic substance
sheet
List the properties of metallic compounds on the ionic substance
sheet
Explain the difference in electric conductivity of metallic ionic and
covalent substances
Compare and contrast the solubility of metallic ionic compounds on
the ionic substance sheet
Learning Objective:
Understand how to perform an
experiment to analyse the Ionic and
covalent properties
Team
Brainstorm!
Evaluate your
procedure to
identify errors
and suggest
improvements.
Need A Hint?
Check the next
silde
Learning Outcomes:
Identify the independent, dependent and controlled variables
Perform an experiment to analyse the Ionic and covalent properties
determine the nature of compounds
Evaluate the method to suggest improvements
Task 1: Aim of Experiment
You have been given 3 different types of unknown solids.
Your task is to design an investigation to determine which solid is a
metal, covalent or ionic structure
Use these guiding quesstions to write your procedure:
Which solids conduct electricity?
Solution of which solids conduct electricity?
Which solids do not conduct electricity?
Challenge: Create a table to help in your investigation
Learning Objective:
Understand how to perform an
experiment to analyse the Ionic and
covalent properties
Team
Brainstorm!
Evaluate your
procedure to
identify errors
and suggest
improvements.
Need A Hint?
Check the next
silde
Learning Outcomes:
Identify the independent, dependent and controlled variables
Perform an experiment to analyse the Ionic and covalent properties
determine the nature of compounds
Evaluate the method to suggest improvements
Task 2: Design Your Experiment
•
•
•
Collect one tray of apparatus per group
Collect and put on your protective clothing
Select the materials you will use to perform your
experiment
Learning Objective:
Understand how to perform an
experiment to analyse the Ionic and
covalent properties
Think!
List any safety
precautions that
should be taken
to perform this
experiment.
Challenge!
Suggest how to
make the results
of the
experiment
more reliable.
Learning Outcomes:
Identify the independent, dependent and controlled variables
Perform an experiment to analyse the Ionic and covalent properties
determine the nature of compounds
Evaluate the method to suggest improvements
Team
Brainstorm!
You have been given 3 different types of unknown solids.
Write the results of your experiment in your table below
Electric
conductivity in
solid state
Solid A
Solid B
Solid C
Learning Objective:
Understand how to perform an
experiment to analyse the Ionic and
covalent properties
Solubility in water
Electric
conductivity of
solution
Evaluate this
experiment to
identify errors
and suggest
improvements.
Need A Hint?
How many
variables have
been changed in
this experiment?
Learning Outcomes:
Identify the independent, dependent and controlled variables
Perform an experiment to analyse the Ionic and covalent properties
determine the nature of compounds
Evaluate the method to suggest improvements
Task 3: Perform Your Experiment
Think!
Describe how to
accurately
measure volume
using a
measuring
cylinder.
•
Perform your experiment to determine which solid is
covalent ionic or metallic
•
Put all apparatus back in your tray when you have finished
Challenge!
•
•
Fill in the table
Write a conclusion explaining the relation between the
physical properties and thee structure of the solid
Suggest how you
could obtain
numerical data
to analyse in
this experiment.
Learning Objective:
Understand how to perform an
experiment to analyse the Ionic and
covalent properties
Learning Outcomes:
Identify the independent, dependent and controlled variables
Perform an experiment to analyse the Ionic and covalent properties
determine the nature of compounds
Evaluate the method to suggest improvements
Plenary
Covalent? Ionic? or metallic?
Solubility
in water
Solubility in
Organic
solvent
Electric
conductivity
in solid
Electric
mpt
conducti
vity in
solution
A
No
No
Yes
n/a
High
B
No
Yes
No
n/a
Low
C
Yes
No
No
Yes
High
Learning Objective:
Understand how to perform an
experiment to analyse the Ionic and
covalent properties
LO Reflection
Have you
achieved your
learning
outcomes for
this lesson?
Learning Outcomes:
Identify the independent, dependent and controlled variables
Perform an experiment to analyse the Ionic and covalent properties
determine the nature of compounds
Evaluate the method to suggest improvements
Reactivity of Metals
Learning Objective
• Understand how to perform an experiment to analyse the reactivity of metals
Learning Outcomes
• Identify the independent, dependent and controlled variables
• Perform an experiment to determine the order of reactivity
• Evaluate the method to suggest improvements
Extension Task
Discuss the reliability and validity of the procedure
Learning Objective:
Understand how to perform an
experiment to analyse the reactivity of
metals
Learning Outcomes:
Identify the independent, dependent and controlled variables
Perform an experiment to determine the order of reactivity
Evaluate the method to suggest improvements
Summary of discovery
Properties
State at room
temperature
Electric
conductivity
Solubitlity in
water
Ionic compounds
Covalent
compounds
Metalic solid
Aim: To compare the reactivity
of Group 1 and Group 2 metals
1. List the Group 1 elements tested
2. List the Group 2 elements tested
Ionic
compounds
Covalent compounds
Lithium
22
Strontium
20
Calcium
17
Sodium
28
Potassium
33
Magnesium
14
3. Formulate a conclusion that answers the
aim of the experiment and is supported by
data
4. Explain the conclusion using your knowledge
of atomic structure
5. Suggest controlled variables in this
experiment