Chemistry, 19.05.2021 21:20, queenjay34
Soda Caffeine Experiment
Scientists at a soft drink company want to test the effect of caffeine on heart rates,
They set up 3 groups of 50 people each.
All 150 people have their heart rates recorded before beginning the experiment,
Group 1 is given a non-caffeinated soda to drink.
Group 2 is given a regular caffeinated soda to drink,
Group 3 is given a highly caffeinated soda to drink,
The heart rate is recorded after each group has drank their soda,
What is the independent (or manipulated) variable in this experiment?
A. Amount of caffeine in soda
B. Change in heart rate
C. Amount of sugar in soda
D. Amount of movement by people before heart rate is recorded
Answers: 3
Chemistry, 22.06.2019 03:00, cheesecake1919
In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?
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Chemistry, 22.06.2019 19:50, jakaylathomas11
A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution
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Soda Caffeine Experiment
Scientists at a soft drink company want to test the effect of caffeine on...
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