1. Designing a fair test

2. Which flame of the Bunsen burner is hotter?
Designing a fair test
Which flame of the Bunsen burner is hotter?
Blue flame?
Yellow flame?

3. 1 What is your hypothesis ?
Designing a fair test
1 What is your hypothesis ?
The blue flame is than the yellow flame.
hotter

4. 2 Based on your hypothesis, what is your prediction ?
Designing a fair test
2 Based on your hypothesis, what is your prediction ?
If the blue flame is than the yellow flame, water will reach boiling
hotter
faster

5. 3 You have the following apparatus.
Designing a fair test
3 You have the following apparatus.

6. How will you carry out the experiment ?
Designing a fair test
How will you carry out the experiment ?
I will...
heat water in a beaker with a flame until it boils,
blue
heat water in another beaker with a flame until it boils.
yellow

7. to measure the time for the water in the two beakers to boil.
Designing a fair test
4 What will you measure ?
I will use a...
to measure the time for the water in the two beakers to boil.
stop-watch

8. 5 What will you do to make sure that the test is fair ?
Designing a fair test
5 What will you do to make sure that the test is fair ?
I will use Bunsen burner to boil the water in the two beakers.
the same
I will put amount of water at temperature into the two beakers.
equal
the same
Same gas supply
Stop timing as soon as the water boils.

9. 6 How will you draw your conclusion ?
Designing a fair test
6 How will you draw your conclusion ?
The flame that takes a shorter time to boil water is
hotter