1. Year 9 Science
Term 1 2013
Chemistry - Classifying Reactions
Due Date: Friday 4th
April 2013
Weighting: 15%
Teacher: Ms Lawrence
Length: 2-3 pages (including all diagrams and bibliography)
Chemical reactions occur all around us, and within us, daily. Chemists make sense of the great
variety of chemical reactions by classifying them to help them predict the products.
Task Description
Choosing from the list below, you are to conduct a chemical reaction and identify the products of
that reaction. You may need to conduct tests (such as the pop test for hydrogen gas, weighing
reactants and products) on the products of your reaction to be sure what was produced. By the
end of your experiment you will be expected to classify your reaction into one of the types we
have studied in class.
Reactions to choose from:
Magnesium in acid Hydrochloric acid and sodium hydroxide
Acid and calcium carbonate Iron nails exposed to air
Acid and sodium carbonate Choose your own…
You may suggest another reaction you would like to report on, but you must have it approved by
your teacher before you commence practical work.
You will need to present your findings as a formal scientific report, with sections as follows:
Title The reaction of [x chemical] with [y chemical].
Aim What were you trying to test?
Hypothesis What did you think would be produced by this reaction?
Materials and
Method
Materials may be listed in dot points. Method should write in third person,
past tense (avoid using ‘I’ or ‘me’ as much as possible). If appropriate
include a diagram of your experimental set up.
Results or
Observations
Present observations for each part of the experiment in full sentences. If
appropriate include a table or graph, but this may not be necessary depending
on the reaction you have chosen.
Discussion Write in full sentences, and include responses to the following:
Include the full chemical equation for your reaction, and the type of
reaction it is.
State how you determined what the products of your reaction were,
and how you know there weren’t others. Refer to the results of any
testing you conducted on the products.
Did you encounter problems whilst conducting your experiment?
Would you change anything to make your experiment more
thorough/reliable/better?
Conclusion A brief statement summarising your experiment, including whether or not
you achieved your aim.
Bibliography Any websites or books you looked at for additional information.
You will have access to computers on Tuesday 2nd
of April and Wednesday 3rd
of April, and it is
expected that you will finish the remainder of this assignment in your own time.
It is your responsibility to save your work and keep a backup copy as appropriate.
2. Marking Guide
A very good report A satisfactory report An unsatisfactory report
Aim and
Hypothesis
3
Aim and hypothesis are
relevant, detailed and
related to each other.
1.5
Aim and hypothesis are
relevant and related.
0
Aim and hypothesis are
irrelevant.
Materials and
Method
6
All materials detailed in
full.
Method complete, full
sentences, and third
person past tense.
The experimental design
is a fair test of the aim
and hypothesis.
3
Most materials listed.
Method mostly complete,
in sentences. The
experimental design is
almost a fair test of the
aim and hypothesis.
0
Materials list
incomplete.
Method incomplete.
The experimental
design is not a fair test
of the aim and
hypothesis.
Results or
Observations
3
Observations clearly
recorded in detail for
each aspect of the
experiment. Tables,
graphs, pictures and
diagrams included where
appropriate.
1.5
Observations recorded
for most aspects of the
experiment. Figures
included where
appropriate.
0
Observations
incomplete. Figures not
included.
Discussion
8
Full chemical equation
and reaction type stated.
Analysis of results
thorough, and used to
support product
identification.
Suggestions made for
future improvements.
4
Chemical equation and
reaction type given.
Results analysed and
linked to chemical
equation.
At least one suggestion
made for future
improvements.
0
Chemical equation and
reaction type unclear.
Results analysis
incomplete, with few
links to chemical
equation.
No suggestions made
for future
improvements.
Conclusion
2
Conclusion responds to
aim and summarises
findings.
1
Conclusion refers to aim
or summarises findings .
0
Conclusion does not
refer to aim or
summarise findings .
Layout and
Presentation
2
All required report
sections included.
Neat and well presented.
1
Most report sections
included.
Neat and legible.
0
Few or no report
sections included.
Legible.
Spelling and
Grammar
1
No spelling or
grammatical errors.
0.5
Few spelling or
grammatical errors.
0
Many spelling and
grammatical errors.
Bibliography 2
References complete.
1
References present but
incomplete.
0
No references included.
Very good practical work Satisfactory practical
work
Unsatisfactory practical
work
Practical work 3
Practical work always
conducted safely.
Attention to detail
throughout practical
work supported accuracy
of results.
1.5
Practical work mostly
conducted safely.
Attention to detail
through most of practical
work.
0
Practical work seldom
conducted safely. Little
attention to detail
throughout practical
work.
Total: /30
![Year 9 Science
Term 1 2013
Chemistry - Classifying Reactions
Due Date: Friday 4th
April 2013
Weighting: 15%
Teacher: Ms Lawrence
Length: 2-3 pages (including all diagrams and bibliography)
Chemical reactions occur all around us, and within us, daily. Chemists make sense of the great
variety of chemical reactions by classifying them to help them predict the products.
Task Description
Choosing from the list below, you are to conduct a chemical reaction and identify the products of
that reaction. You may need to conduct tests (such as the pop test for hydrogen gas, weighing
reactants and products) on the products of your reaction to be sure what was produced. By the
end of your experiment you will be expected to classify your reaction into one of the types we
have studied in class.
Reactions to choose from:
Magnesium in acid Hydrochloric acid and sodium hydroxide
Acid and calcium carbonate Iron nails exposed to air
Acid and sodium carbonate Choose your own…
You may suggest another reaction you would like to report on, but you must have it approved by
your teacher before you commence practical work.
You will need to present your findings as a formal scientific report, with sections as follows:
Title The reaction of [x chemical] with [y chemical].
Aim What were you trying to test?
Hypothesis What did you think would be produced by this reaction?
Materials and
Method
Materials may be listed in dot points. Method should write in third person,
past tense (avoid using ‘I’ or ‘me’ as much as possible). If appropriate
include a diagram of your experimental set up.
Results or
Observations
Present observations for each part of the experiment in full sentences. If
appropriate include a table or graph, but this may not be necessary depending
on the reaction you have chosen.
Discussion Write in full sentences, and include responses to the following:
Include the full chemical equation for your reaction, and the type of
reaction it is.
State how you determined what the products of your reaction were,
and how you know there weren’t others. Refer to the results of any
testing you conducted on the products.
Did you encounter problems whilst conducting your experiment?
Would you change anything to make your experiment more
thorough/reliable/better?
Conclusion A brief statement summarising your experiment, including whether or not
you achieved your aim.
Bibliography Any websites or books you looked at for additional information.
You will have access to computers on Tuesday 2nd
of April and Wednesday 3rd
of April, and it is
expected that you will finish the remainder of this assignment in your own time.
It is your responsibility to save your work and keep a backup copy as appropriate.](https://image.slidesharecdn.com/assignment-classifyingreactionsreport-130826051407-phpapp01/85/Assignment-classifying-reactions-report-1-320.jpg)
