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Scientific Method Quiz
The Sugar/Salt Experiment – For questions #1-5, determine which part of the scientific method
each statement represents. Write the appropriate letter on your answer sheet.
(Problem = P, Research = R, Hypothesis = H, Experiment = E, Conclusion = C)
____ 1.)
My hypothesis was correct, since sugar dissolved in 30 seconds and salt dissolved in
45 seconds. Sugar does dissolve faster than salt.
____ 2.)
Which substance dissolves fastest, sugar or salt?
____ 3.)
Add one teaspoon of sugar to one cup of water, and time how long it takes to
dissolve. Repeat this process for one teaspoon of salt.
____ 4.)
Check out and read a library book that discusses how substances dissolve.
____ 5.)
I think that sugar dissolves faster than salt.
6.)
What was the independent variable in this experiment?
List at least three factors that remain constant for the sugar/salt experiment.
7.)
8.)
9.)
The Boiling Point Experiment - For questions #8-12, determine which part of the scientific
method each statement represents. Write the appropriate letter on your answer sheet.
(Problem = P, Research = R, Hypothesis = H, Experiment = E, Conclusion = C)
____ 8.)
I think that bottled water will boil at a higher temperature.
____ 9.)
Pour 2 cups of salt water in a pan, put the pan on the burner, and keep track of the
temperature using a thermometer. Make note of the temperature at which the salt
water begins to boil. Repeat these steps for the tap water and the bottled water.
____ 10.) Salt water boiled at 105°, tap water boiled at 102°, and bottled water boiled at 100°.
Based on these results, salt water boils at the highest temperature. My hypothesis was
incorrect.
____ 11.)
Do an internet search on “boiling points.”
____ 12.) Which liquid boils at the highest temperature, tap water, salt water, or bottled
water?
13.)
What was the independent variable in this experiment?
List at least three factors that remain constant for the boiling point experiment.
14.)
15.)
16.)
Observations & Inferences - Determine whether each of the following statements is an
observation or an inference. Write “O” or “I” on your answer sheet.
____ 15.)
There are 36 chairs in our science classroom.
____ 16.)
The chairs in this classroom are uncomfortable.
____ 17.)
Salt water boils at 105° whereas bottled water boils at 100°.
____ 18.)
Salt water has a higher boiling point than bottled water.
____ 19.)
Students at McCulloch are brilliant!
____ 20.)
The average grade in this science class is an 85%.
____ 21.)
This is a science classroom.
____ 22.)
This classroom contains 7 sinks and several lab tables.
____ 23.)
McCulloch Intermediate School has close to 1,000 students.
____ 24.)
There are science posters around the classroom.
____ 25.)
The teacher loves science.