mrs. alvis class science inquiry showcase 2011-2012
TRANSCRIPT
Mrs. Alvis’ Class
Science Inquiry Showcase 2011-
2012
Which liquid will evaporate the most over 7 days: water, Cherry 7 Up, dark corn syrup,
hand sanitizer, vinegar, or vegetable oil?
Hypothesis• Most of us think water will evaporate the most
because it is natural, doesn’t have any chemicals, and the other liquids are stickier than water.
• Some of us think Cherry 7 Up will evaporate the most because it has bubbles that can make the Cherry 7 Up float away faster.
• One student predicts that hand sanitizer will evaporate the most because it evaporates quickly on your hands.
Materials
• 100 ml Water• 100 ml Cherry 7 Up• 100 ml Dark Corn
Syrup• 100 ml Hand sanitizer• 100 ml Vinegar• 100 ml Vegetable Oil
• Window• Masking Tape• Marker• 6 Graduated
Cylinders
Procedures1. Pour 100 ml of water into one graduated cylinder. Label the
graduated cylinder with masking tape.
2. Pour 100 ml of Cherry 7 Up into one graduated cylinder. Label the graduated cylinder with masking tape.
3. Pour 100 ml of hand sanitizer into one graduated cylinder. Label the graduated cylinder with masking tape.
4. Pour 100 ml of dark corn syrup into one graduated cylinder. Label the graduated cylinder with masking tape.
5. Pour 100 ml of vinegar into one graduated cylinder. Label the graduated cylinder with masking tape.
6. Pour 100 ml of vegetable oil into one graduated cylinder. Label the graduated cylinder with masking tape.
7. Record in notebook or on a data sheet how much liquid is in each graduated cylinder.
8. Place graduated cylinders in the window.
9. The next day, measure and record the amount of liquid in each cylinder.
10. Continue to measure and record the amount of liquid in the cylinders for 7 days.
Procedures
Day 1• All liquids are at 100 ml.
Water Cherry 7 Up
Hand Sanitizer
Dark Corn Syrup
Vegetable Oil
Vinegar
99 ml 93 ml 94 ml 100 ml 100 ml 97 ml
Day 3
Day 7
Water Cherry 7 Up Hand Sanitizer
Dark Corn Syrup
Vegetable Oil Vinegar
93 ml 88 ml 86 ml 100 ml 100 ml 92 ml
Day 7
Water Cherry 7 Up Hand Sanitizer
Dark Corn Syrup
Vegetable Oil Vinegar
93 ml 88 ml 86 ml 100 ml 100 ml 92 ml
DataDay 1 Day 2 Day 3 Day 4 Day 7
Water 100 ml 100 ml 99 ml 99 ml 93 ml
Cherry 7 Up
100 ml 94 ml 93 ml 91 ml 88 ml
Hand Sanitize
r
100 ml 100 ml 94 ml 91 ml 86 ml
Dark Corn Syrup
100 ml 100 ml 100 ml 100 ml 100 ml
Vegetable Oil
100 ml 100 ml 100 ml 100 ml 100 ml
Vinegar 100 ml 98 ml 97 ml 97 ml 92 ml
Results• Over the 7 days, dark corn syrup
and vegetable oil did not evaporate at all.
• The hand sanitizer evaporated the most.
• Cherry 7 Up evaporated the second fastest.
• Vinegar evaporated the third fastest.
• Water evaporated the fourth fastest.
• Cherry 7 Up and vinegar are the only liquids that evaporated on Day 2.
Conclusion• Claim – Hand sanitizer evaporated the most
of all the liquids.• Evidence – On day 7, hand sanitizer had 86
ml left, the least amount of all the liquids.• Reasoning – We think hand sanitizer
evaporated the most because of the chemicals that are in it. Also, we know that when we use hand sanitizer, it dries faster than water on our hands. We think that maybe the more it is exposed to air, the quicker it will evaporate.
Thoughts from the Class
“I was surprised about the hand sanitizer because I thought the water would evaporate faster.” – Lily
“My hypothesis was really
great – I was almost
right!” – Viktor
“I was surprised because at first 7 Up was evaporating the fastest, then the hand sanitizer evaporated the fastest.” – Reese and Katey
“I was surprised that
vegetable oil didn’t
evaporate.” – Sophia
“I think everyone expected the dark corn syrup to not move because it is so sticky.” – Josie
“My hypothesis
was right! It was
hand sanitizer
that evaporated
the most.” -
Evan
“It was fun to watch the
experiment, especially
since most people
thought water was
going to evaporate the
fastest.” – Abby
“I was surprised that water didn’t evaporate that fast.” – Christian