Investigating Matter Changes
PROPERTIES OF MATTER
LESSON 7 (EXTENSION)
Is Matter Created or Destroyed When
It Changes? How Do You Know?
Unit Central Questions
What is matter made of? How can matter
change?
Review: How Does Matter Change?
What happens to the molecules when a solid
changes to a liquid?
Photos courtesy of BSCS
Review: How Does Matter Change?
What happens to the molecules when a liquid
changes to a solid?
Photos courtesy of BSCS
Review: How Does Matter Change?
What happens during a chemical change when
matter fizzes or burns?
Photo courtesy of BSCS
Photo courtesy of BSCS
Photo courtesy of BSCS
Photo courtesy of pixabay.com
Today’s Focus Questions
Is matter created or destroyed when it changes?
How do you know?
Is Matter Created or Destroyed?
•
How could we figure out whether matter is
created or destroyed during a physical or
chemical change?
•
What kind of data could we collect that
might tell us whether there’s more or less
matter or “stuff” after a change than before?
Weighing Matter
Weighing matter will help us figure out
whether there’s more or less “stuff” after a
change, or if the amount of matter is the same.
We’ll use a balance to weigh our matter.
Courtesy of BSCS
Before the
Change
After the
Change
Weighing Matter
•
How will we know whether the amount of
matter is the same before and after a change?
What will the balance look like?
•
How will we know
there’s a different
amount of matter
after a change than
before? What will the
balance look like?
Courtesy of BSCS
Is Matter Created or Destroyed?
1.
Have one member of your group gather the
supplies you’ll need for
part 1
of the investigation.
2.
Discuss your predictions; then record them on
your handouts (step 2).
3.
Weigh the water bottles on the balance and record
your data on the data table (see your handout).
4.
Weigh the 2 bags of Legos on the balance and
record your data on the data table.
5.
Draw a conclusion and answer the focus questions
(step 5) .
Is Matter Created or Destroyed?
1.
Have one member of your group gather the supplies
you’ll need for
part 2
of the investigation.
2.
Discuss your predictions; then record them on your
handouts (step 6).
3.
Carefully follow the directions for step 7 before
weighing the bags of vinegar and baking soda on the
balance. Then record your data on the data table.
4.
Weigh the 2 bags of Legos on the balance and
record your data on the data table.
5.
Draw a conclusion and answer the focus questions
(step 9) .
What Did You Observe?
•
What did you observe when you weighed
the water bottles?
•
What did you observe when you weighed
the 2 bags of Lego water molecules?
•
What did you observe when you weighed
the bags of vinegar and baking soda before
and after the chemical change?
•
What did you observe when you weighed
the 2 bags of Lego molecules?
Let’s Summarize!
Our focus questions:
Is matter created or
destroyed when it changes? How do you know?
•
What did we discover about matter in
physical and chemical changes that might
help us answer these questions?
Let’s Summarize!
Our focus questions:
Is matter created or
destroyed when it changes? How do you know?
•
Write your
best answer
to these questions
in your science notebook. Make sure to
include evidence from your data tables
and Lego models.
Whether matter is created or destroyed during physical or chemical changes. Learn how to weigh matter before and after changes to determine if the amount remains the same or differs. Discover ways to collect data and analyze results to understand the nature of matter transformations.
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Presentation Transcript
PROPERTIES OF MATTER LESSON 7 (EXTENSION) Is Matter Created or Destroyed When It Changes? How Do You Know?
Unit Central Questions What is matter made of? How can matter change?
Review: How Does Matter Change? What happens to the molecules when a solid changes to a liquid? Photos courtesy of BSCS
Review: How Does Matter Change? What happens to the molecules when a liquid changes to a solid? Photos courtesy of BSCS
Review: How Does Matter Change? What happens during a chemical change when matter fizzes or burns? Photo courtesy of BSCS Photo courtesy of BSCS Photo courtesy of pixabay.com Photo courtesy of BSCS
Todays Focus Questions Is matter created or destroyed when it changes? How do you know?
Is Matter Created or Destroyed? How could we figure out whether matter is created or destroyed during a physical or chemical change? What kind of data could we collect that might tell us whether there s more or less matter or stuff after a change than before?
Weighing Matter Weighing matter will help us figure out whether there s more or less stuff after a change, or if the amount of matter is the same. We ll use a balance to weigh our matter. Before the Change After the Change Courtesy of BSCS
Weighing Matter How will we know whether the amount of matter is the same before and after a change? What will the balance look like? How will we know there s a different amount of matter after a change than before? What will the balance look like? Courtesy of BSCS
Is Matter Created or Destroyed? 1. Have one member of your group gather the supplies you ll need for part 1 of the investigation. 2. Discuss your predictions; then record them on your handouts (step 2). 3. Weigh the water bottles on the balance and record your data on the data table (see your handout). 4. Weigh the 2 bags of Legos on the balance and record your data on the data table. 5. Draw a conclusion and answer the focus questions (step 5) .
Is Matter Created or Destroyed? 1. Have one member of your group gather the supplies you ll need for part 2 of the investigation. 2. Discuss your predictions; then record them on your handouts (step 6). 3. Carefully follow the directions for step 7 before weighing the bags of vinegar and baking soda on the balance. Then record your data on the data table. 4. Weigh the 2 bags of Legos on the balance and record your data on the data table. 5. Draw a conclusion and answer the focus questions (step 9) .
What Did You Observe? What did you observe when you weighed the water bottles? What did you observe when you weighed the 2 bags of Lego water molecules? What did you observe when you weighed the bags of vinegar and baking soda before and after the chemical change? What did you observe when you weighed the 2 bags of Lego molecules?
Lets Summarize! Our focus questions: Is matter created or destroyed when it changes? How do you know? What did we discover about matter in physical and chemical changes that might help us answer these questions?
Lets Summarize! Our focus questions: Is matter created or destroyed when it changes? How do you know? Write your best answer to these questions in your science notebook. Make sure to include evidence from your data tables and Lego models.
