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QUESTION:
How does adding salt affect the boiling point of water?
If _________________________________________
HYPOTHESIS:
then _______________________________________
because ____________________________________.
(a scientific reason that supports your prediction)
Manipulated Variable: (What will we be changing on purpose?)
VARIABLES:
Responding Variable: (What will we be measuring?)
Controlled Variables: (What things will we be careful to keep
the same?)
MATERIALS:
Think carefully – what are ALL of the materials you will
need to complete this lab?)
PROCEDURE:
Write out each step you will need to follow to test your
hypothesis. Some reminders:
- Does your procedure explain how to set things up?
- What data will you collect/measure?
- When and what will you record your data?
- If I had to follow your procedure to do exactly what
you did, would your steps make sense to me?
DATA:
What kind of data will YOU need to collect, as well as our
whole class?
After we have conducted our experiment, write a
CONCLUSION: conclusion that answers the question and uses evidence
from our class data table.
φ
QUESTION:
How does adding salt affect the boiling point of water?
If _________________________________________
HYPOTHESIS: then _______________________________________
because ____________________________________.
(a scientific reason that supports your prediction)
Manipulated Variable: (What will we be changing on purpose?)
VARIABLES:
Responding Variable: (What will we be measuring?)
Controlled Variables: (What things will we be careful to keep
the same? List at least three.)
MATERIALS:
10 g salt
300 mL cold water
triple beam balance
Think carefully – what are ALL
of the materials you will need
to complete this lab?)
Write out each step you will need to follow to test your
hypothesis. Some reminders:
- Does your procedure explain how to set things up?
- What data will you collect/measure?
- Will you need to measure anything before you start?
PROCEDURE:
- When and what will you record your data?
- How will you keep track of time?
- When will the experiment stop?
- If I had to follow your procedure to do exactly what
you did, would your steps make sense to me?
What kind of data will YOU need to collect?
(Hint: We are testing the boiling point of salt water and
will need to compare it to the boiling point of pure
water...)
DATA:
?????
?????
?????
↓
↓
↓
What kind of data will we need to collect as a whole class?
????
????
↓
↓
After we have conducted our experiment, write a
CONCLUSION: conclusion that answers the question and uses evidence
from our class data table.
λ
QUESTION:
How does adding salt affect the boiling point of water?
If _________________________________________
HYPOTHESIS:
then _______________________________________
because ____________________________________.
(a scientific reason that supports your prediction)
Manipulated Variable: (What will we be changing on purpose?)
A. Salt or pure water
B. Temperature
C. Amount of salt
VARIABLES:
Responding Variable: (What will we be measuring?)
A. Salt or pure water
B. Temperature
C. Amount of salt
Controlled Variables: (What things will we be careful to keep
the same? List at least three.)
MATERIALS:
10 g salt
300 mL cold water
triple beam balance
wire gauze
thermometer clamp
stirring rod
Think carefully – what are ALL
of the materials you will need
to complete this lab?)
Write out and fill in each step you will need to follow to
test your hypothesis.
1.
2.
3.
4.
PROCEDURE:
5.
6.
7.
8.
9.
Gather all materials and set up _______ and _______.
Fill the 600 mL beaker with ________.
Measure 10 g salt and add to the water.
Stir until the salt ________ and place the beaker
________.
Measure and record ____________________________.
Light the Bunsen burner and ________________.
Measure and record _______ every 30 seconds until
________.
Continue heating the salt water and ________ for 2
more minutes after the water starts to boil.
________________ and ________________.
What kind of data will YOU need to collect?
(Hint: We are testing the boiling point of salt water and will need
to compare it to the boiling point of pure water...)
TIME (minutes)
TEMPERATURE (???)
OBSERVATIONS
↓
↓
0
DATA:
↓
What kind of data will we need to collect as a whole class?
????
????
↓
↓
A: ____________ boiled at a higher temperature than
________________.
D: ____________ boiled at ________. (Which boiled at the
highest temperature?)
CONCLUSION:
D: ____________ boiled at ________. (Which boiled at the
lowest temperature?)
M: ____________ boiled at a temperature __________
degrees higher than ____________.
ψ
QUESTION:
How does adding salt affect the boiling point of water?
If _________________________________________
HYPOTHESIS:
then _______________________________________
because ____________________________________.
(a scientific reason that supports your prediction)
Manipulated Variable: (What will we be changing on purpose?)
A. Salt or pure water
B. Temperature
VARIABLES:
Responding Variable: (What will we be measuring?)
A. Salt or pure water
B. Temperature
Controlled Variables: (What things will we be careful to keep
the same? Choose three from this list.)
- amount of water
- temperature of water
- time until boiling
MATERIALS:
10 g salt
300 mL cold water
triple beam balance
wire gauze
thermometer clamp
stirring rod
- salt added or not
- heat of Bunsen burner
- amount of salt
Bunsen burner
ring stand
thermometer
600 mL beaker
striker
timer
Write out and choose the correct word in each step in
your procedure:
PROCEDURE:
1. Gather all materials and set up (beaker/ring stand)
and (Bunsen burner/triple beam balance).
2. Fill the 600 mL beaker with 300 mL of (water/salt).
3. Measure 10 g salt and add to the water.
4. Stir until the salt (dissolves/disappears) and place the
beaker on the (Bunsen burner/ring stand).
5. Measure and record the starting
(temperature/volume).
6. Light the Bunsen burner and (record the temperature/
start the timer).
7. Measure and record the (time/temperature) every 30
seconds until (the time is up/water boils).
8. (Continue heating the salt water/turn off the Bunsen
burner) and record the temperature for 2 more
minutes after the water starts to boil.
9. (Turn off the Bunsen burner/Record the temperature)
and (clean up/record the temperature).
What kind of data will YOU need to collect?
TIME (minutes)
TEMPERATURE (???)
OBSERVATIONS
↓
↓
0
↓
DATA:
What kind of data will we need to collect as a whole class?
BOILING POINT
PURE WATER
BOILING POINT
SALT WATER
↓
↓
A: ____________ boiled at a higher temperature than
________________.
D: ____________ boiled at ________. (Which boiled at the
highest temperature?)
CONCLUSION:
D: ____________ boiled at ________. (Which boiled at the
lowest temperature?)
M: ____________ boiled at a temperature __________
degrees higher than ____________.