Waseley Hills High School
BTEC Level 1/2 First Award in Principles of Applied Science
Unit 2: Chemistry and Our Earth
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Learning aim A: Investigate
chemical reactivity and bonding (Part 1)
Chemical and physical properties of groups 1 and 7 of the periodic table:
a. trends in physical properties of groups 1 and 7 (appearance, melting point, boiling point, electrical
conductivity)
b. reactivity with water for group 1
c. displacement reactions for group 7
d. trends in chemical properties in group 1 and group 7 – relationship with electronic configuration.
Assignment A The Elements of Group 1 and 7 of the Periodic Table
Scenario
You are a chemist working for a large chemical company that has just employed a number of new science
technicians. You have been asked to prepare support materials for the new employees that explain the
properties and trends in Group 1 and Group 7 elements. The support materials are to be given out to the new
employees as an introduction to the elements that the company uses in its manufacture of chemical products.
Task 1: Properties of Reactive Elements
1. a) By research, investigate the physical properties, e.g. boiling points,
melting points, electrical conductivity, thermal conductivity, solubility in
water and non-polar solvents, viscosity, of the following elements: astatine,
bromine, caesium, chlorine, fluorine, francium, iodine, lithium, sodium,
potassium, rubidium. Record the results of your investigations in Table 1.
(2.A P1)
b) Choose at least one physical property for each of the two groups and
write a description of the changes in the property down each group of
elements. (2.A M1)
2. a)Investigate the chemical properties, e.g. reaction with water, and
electronic structure of the elements of Group 1 of the Periodic Table. Using
Table 2, describe what you saw during the practical demonstration and/or
video clips of the Group 1 elements reacting with water. Record the results
of your investigations appropriately. (2.A P1)
b) Find out and draw the electronic structure of the first three Group 1
elements. (2.A P1)
c) Make a concluding statement about the chemical properties of the
Group 1 elements. (2.A P1)
3. a) Investigate the chemical properties, e.g. the displacement reaction
between the Group 7 elements and halide salts, and the electronic
structure of the elements of Group 7 of the Periodic Table. Using Table 3,
RESOURCES
describe what you saw during the practical demonstration and/or video
clips of the Group 7 elements reacting with each other. Record the results
of your investigations appropriately. (2.A P1)
b) Find out and draw the electronic structure of the first two Group 7
elements. (2.A P1)
c) Make a concluding statement about the chemical properties of the
Group 7 elements. (2.A P1)
4. Produce a written report entitled ‘The Elements of Groups 1 and 7 of the
Periodic Table’. Include in your report information on how the patterns of
the chemical properties change within these groups (2A.M1) and how
these trends are linked to their electronic structure. (2.A D1)
The grading criteria that this assignment relates to:
P1
Describe physical and chemical properties of group 1 and 7 elements
M1
Describe trends in the physical and chemical properties of group 1 and 7 elements
D1
Explain the trends in chemical properties of group 1 and 7 elements
If you have not achieved the Level 2 criteria, your work will be assessed to determine if the following
Level 1 criteria have been met.
Criterion
To achieve the criteria you must show that you are able to:
Unit
reference
2
1A.1
Classify group 1 and 7 elements based on their physical properties.
Evidence you must produce for this task;
Level
2A.P1
Description
Table 1- Physical properties of group 1 and 7
Table 2- group 1 elements reacting with water and a description of chemical
properties of group 1
Part 2A.M1
Table 3- group 7 elements reacting with halide salts and a description of chemical
properties of group 7
Observation sheet completed for practical above
Electronic structure of the first 3 elements from group 1- conclusion for the pattern
of reaction for group 1 elements
Part 2A.M1 Electronic structure of the first 2 elements of group 7 elements- conclusion for the
pattern of reaction for group 7 elements
2A.D1
Checklist
Learner Assessment Submission and Declaration
This sheet must be completed by the learner and provided for work
submitted for assessment.
Learner name:
Date issued:
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Qualification: BTEC Level 1/2 First Award in Principles of Applied Science
Assessment reference and title: Unit 2: Chemistry and Our Earth, Assignment A (part
1)
Task
ref.
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Page numbers or
description
Learner declaration
I certify that the work submitted for this assignment is my own. I have clearly
referenced any sources used in the work. I understand that false declaration is a
form of malpractice.
Learner signature: ________________________________Date:_______________
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