Lesson 1.5 Physical and Chemical Change Lab In this lab, you will investigate ph

Lesson 1.5 Physical and Chemical Change Lab
In this lab, you will investigate
physical and chemical changes
by doing different activities
involving
a
wide
variety of substances.
Safety
•
Do not eat or drink any of the substances produced in this lab.
•
Make sure you have a parent supervisor for activities that involve using fire
.
•
Make sure you have access to materials that can clean up a mess
.
•
Wear safety goggles and gloves when performing
these activities.
Materials
•
A wide variety of household items
(see activity list)
•
A cell phone or device capable of taking photos
Procedure
1.
Perform
15
of the
20
activities identified on
the list provided later in this l
ab.
The choice
of which activities t
o perform should be based on what is accessible to you
in your home
or school.
2.
Record observations for each change as you complete the activities.
A table has been
provided for this, but you can make your own if you
want.
Take images before and after
you do each activity using a cell phone
.
3.
Classify each change as
either a
physical or chemical change
or both
(
physical and
chemical
)
.
Classify each of
the activities a
s
reversible or not.
A table has been provided
for this
, but you can make your own if you want
.
4.
For
3
of the
activities you identified as physical changes,
include the
images of before
and after
the change
in your lab report
observations
.
You should also explain WHY you
classified these changes as physical changes.
5.
For 3 of the activities you identified as chemical changes,
include the
images of before
and after
the change
in your lab report
observations
.
You should also explain WHY you
classified these changes as chemical changes.
6.
Complete a lab report
that includes
introductory information, a
purpose,
materials (based
on the activities you selected), procedures,
data/
observations
(fill in the tables),
re
sults
(
Steps 4 and 5 of the procedure
)
and a conclusion
.
You do not need a
hypothesis,
calculations
or sources of error for this report.
See the assessment guide at the end of
this lab.
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Science 10 | Unit 1
|
Lesson 1.5
Lab
List of
A
ctivities
(you should complete 15 of these)
•
Break a tree branch into several pieces.
•
Melt an ice cube in a bowl
•
Mix a small amount of milk and water together
in a cup
•
Examine
a banana
that’s been left
out on your countertop for a few
days
•
Locate a tool that has som
e rust on it
. Examine the rusty location.
•
Shred a piece of loose
–
leaf or other paper into small pieces
•
Cut a piece of bread in half
•
Take a bite out of an apple and leave it sit on the counter for an hour
•
Place a
small amount of
eggshell into vinegar
for a
few hours
•
Mix milk and Coca
–
C
ola or Peps
i, then
let the c
up
sit for a few hours
•
Melting some ice cream
in a bowl
•
Squeezing an orange to make juice
in a bowl
•
Leaving a chip out on the counter for a day
until it is stale
•
Melt a chocolate chip
in your hand by
holding it
If you try some of these activities, make sure you have a parent supervisor.
•
Mix
a small amount of
vinegar and baking soda together
in a large container
•
Lighting a match or a lighter
•
Burning a piece of hair
using a lighter or match
•
Cook an egg
on the stove
•
Boiling water in a kettle
•
Deliberately b
urn a piece of toast
in your toaster
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Science 10 | Unit 1
|
Lesson 1.5
Lab
Which change was it?
Observations
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Science 10 | Unit 1
|
Lesson 1.5
Lab
5
Science 10 | Unit 1
|
Lesson 1.5
Lab
Which change was it?
Physical/Chemical/Both
Is it reversible?
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Science 10 | Unit 1
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Lesson 1.5
Lab
Assessment
(
4
0 marks)
Make sure to refer to the Creating a Lab Report Guide
for other assistance with what is
needed in a lab report
. This will be marked using a marking guide online.
Introductory Info,
Purpose, Materials and Procedure
(5 marks)
Did you include all your introductory information?
Observations
and Data
(
15
marks)
Did you complete the entire table correctly
and record
all
your observations
for the
activities you selected
?
Results and Discussion (
12
marks)
Pay special attention to
what
you
need
to include
for
Steps 4 and 5
in the procedure.
Conclusion
(
8
marks)
Did you notice any patterns in the data? What can you conclude about
physical and
chemical changes based on th
e data you collected in this lab? Make sure to be specific about
examples.
Remember to note why you decided certain changes were either physical or chemical
(check your notes!).