Experiment of electrolyte and non-electrolyte
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Transcript of Experiment of electrolyte and non-electrolyte
LESSON PLAN
Subject: Chemistry
Form: 4 SN 2
Number of Students: 31
Date of Lesson: 16 July 2012
Time: 10.45 am- 11.55 am
Title of Lesson: Electrochemistry
Title of Experiment: Electrolytes and Non-electrolytes
Learning Objectives:
In the end of the lesson, students can be able to:
1) Classify the substance into electrolytes and non-electrolytes.
Content:
1) Electrolytes and non-electrolytes
Student’s Prior Knowledge:
1) Students have learned about properties of electrolytes and non-electrolytes
Noble Values:
1) Cooperativeness
2) Responsibility
Materials/Resources:
1) Laboratory apparatus
2) Activity module of Chemistry form 4
3) Article of newspaper
Set Induction (5minutes):
Teacher asks students to read an article that she gets from the newspaper. After students read the
article, teacher asks students how the victim gets the electrical shock. From students responds,
teacher later asks students to relate conducting electricity with electrolyte that they have learned
in the topic of Electrochemistry. Teacher later asks whether water is electrolyte or non-
electrolyte. Based on students respond, teacher later ask students to define electrolyte. Then,
teacher tells students that they will handle the experiment of determination of electrolyte and
non-electrolyte.
Development (50 minutes):
Step Teacher Activity Student Activity Teacher Materials/Notes
Step 1
(10 minutes)
Teacher divides
students into four
groups which two
groups will do the
experiment for molten
and the other two
groups will do for
aqueous solution.
Teacher later
demonstrates to the
students to setup the
electrolytic cell.
Students should
observe teachers’
demonstration carefully
to setup the
electrochemical cell.
Teacher reminds students to carefully
setup the cell.
Step 2
(5 minutes)
Teacher observes
students setup the
electrolytic cell.
Students should setup
the experiment well
under teachers’
observation.
Step 3
(15 minutes)
Teacher observes
students doing the
experiments.
Students should handle
the experiment
Teacher should reminds students to:
1) Make sure that the connecting
wires are kept away from the
carefully.
Students should record
the observation of the
experiments in the
table.
flame.
2) Molten naphthalene, C10H8 is
flammable and should keep the
flame low when naphthalene
melts.
3) Dispose the lead(II) bromide,
PbBr2 carefully as it is hazardous.
Step 4
(10 minutes)
Teacher tells students
to clean all the
apparatus used and
place them at their
place.
Students should clean
all the apparatus used
and place the apparatus
used at their place.
Step 5
(10 minutes)
Teacher asks students
to share their
observation from the
experiments.
Teacher later discuss
with the students about
their observation from
the experiments.
Student is called to the
front to write on the
white board the
observation from the
experiments.
Students are discussing
within the group based
on the observation to
state that substances
that they used are
electrolytes or non-
electrolytes.
Teacher should guide students to
discuss their observation from the
experiments.
Evaluation (10minutes):
Teacher prepared four different envelopes to the students. Each group should take on one of these different enveloped. Teacher later ask students to discuss and solve the problem given in the enveloped. A representative is called from each group to show the problem solving in front of the class.
Conclusion (5 minutes):
Teacher asks students to give the properties of electrolyte and non-electrolyte.