Name_____
Topic : Rate of reaction
ATL Skill : VIII. Critical thinking skills
Analysing and evaluating issues and ideas
○ Gather and organize relevant information to formulate an
argument
○ Interpret data
●
Assessment Criteria : C
Calculate the Rate of the
process
1.
Write factors that affect the rate of chemical reaction:
2. The reaction between calcium carbonate, a metal carbonate,
and hydrochloric acid, a strong acid, is a vigorous reaction that
produces a gas, carbon dioxide
A series of simple experiments were performed and the data
collected was plotted on a graph:
a) The three curves are the result of different concentrations
of hydrochloric acid. Which curve represents the highest
concentration and which represents the lowest? Justify your
answer using scientific reasoning
b) All of the curves nish at the same point on the graph. What
does this tell us about the reaction?
3. a) Think of a question you will test in your investigation.
b) Formulate a testable hypothesis supported by scientific
reasoning and theoretical knowledge.
c) Decide and explain what variables you are manipulating: identify
the dependent and independent variables. What variables will you
control?
Perform the reaction between the magnesium ribbon and
hydrochloric acid .
a) Record the experimental data by the using table below :
Time (s)
Concentration -1
(cm3)
Concentration -2
(cm3)
b) Identify and describe the relationship between concentration
and time
c) Evaluate and make a conclusion about the effect of
concentration on the rate of reaction and support this
conclusion with scientific reasoning.
d) Drawing 2 graphs to show the results :
Conclusion