HAPPY MONDAY! NO POLAR BEARS 
1
FOLLOW UP TO: A POWERFUL THIRST
• What’s an electrolyte?
• Why is it important to humans, especially during exercise?
Get out your Cornell
Notes to answer
It is NOT to replace the salt lost… it’s to help absorb the
water in the drink! Up to 30% faster absorption..
the
following
questions:
• What is a carbohydrate?
• How does a human body use carbohydrates when we
“Quick energy” – to replace the calories used up.
exercise?
• What does homeostasis mean?
‘balance’. Water, salts, minerals, temperature…
• What makes a “good” sports drink?
6-8% carbohydrates & electrolytes, [92-94% water]
2
DEFINITIONS FOR A TESTABLE QUESTION
1. The question center on objects, organisms, and events in the
natural world
2. The question connects to science concepts rather than
opinions, feelings or beliefs
Learning
Target
#1
3. The question can be investigated through experiments or
observations
4. The questions leads to gathering evidence and using data to
explain how the natural world works
3
STOP & THINK
Text, page 20
1. We have discussed in class already
2. How can you find out if the mystery sports drink
contains any of these beneficial ingredients? What
tests could you preform?
3. How could you test the sports drink out how much of
the beneficial ingredients are solid and how much are
liquid?
4
MYSTERY SPORTS DRINK
Part Duex
5
“Does the mystery sports drink contain
ingredients that are beneficial to
athletes?”
TESTABLE QUESTION. WRITE THIS DOWN
WE WILL BE NEEDING TO REFINE IT FOR OUR
INVESTIGATION
6
MYSTERY SPORTS DRINK (MATERIALS)
Evap dish
Conductivity probe
Graduated cylinder
Hot plate
Beaker (large)
Benedits solution
Beakers (3, small)
Sports drink
Test tube
Foil
Test tube holder
Tap water
Dropper
Distilled water
Mass balance
7
MYSTERY SPORTS DRINK
Text, page 20
1) Get into groups of 3 – 4 people. Designate a group
leader.
2) Table leader: get apron/glasses for each person
3) Everyone: Put on aprons & safety glasses.
4) In your science notebook, begin a new section labeled
“Mystery Sports Drink”.
5) In your Table of Contents add Mystery Sports Drink
Part II
MYSTERY SPORTS DRINK, CONT.
6) Get into groups of 3 – 4 people. Designate a group
leader.
7) Page 20-25. Read “Part II:
Testing…Testing…Testing…”
a. Including the Three Protocols
a) Is something missing in these protocols?
8) Teacher demo for each test.
• Benedict’s Test
• Electrical Conductivity Test (JUST THE PROBES!)
• Evaporation Test
MYSTERY SPORTS DRINK; LAB
9. Complete Process and Procedures 2-9 in your
notebooks
10. Part II: At the end of class store goggles and aprons in
the proper location.
TABLE EXAMPLE
Benedict’s test
Conductivity Test
Evaporation test
Data
Positive/Negative
Does it contain
electricity or not?
• Mass dish =
• Mass dish + sports
drink =
• Calculate mass of
sports drink
• Mass of dish +
residue =
• Calculate mass of
residue
Results
Is sugar present?
Is salt present
(how much sugar and
salt)
Calculate the % of
drink that is solid by
comparing the mass of
the sports drink to the
mass of the residue