Mrs. Alvis ’ Class

1. Mrs. Alvis’ Class Science Inquiry Showcase 2011-2012

2. Which liquid will evaporate the most over 7 days: water, Cherry 7 Up, dark corn syrup, hand sanitizer, vinegar, or vegetable oil?

3. 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.

4. 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

5. Procedures • Pour 100 ml of water into one graduated cylinder. Label the graduated cylinder with masking tape. • Pour 100 ml of Cherry 7 Up into one graduated cylinder. Label the graduated cylinder with masking tape. • Pour 100 ml of hand sanitizer into one graduated cylinder. Label the graduated cylinder with masking tape. • Pour 100 ml of dark corn syrup into one graduated cylinder. Label the graduated cylinder with masking tape. • Pour 100 ml of vinegar into one graduated cylinder. Label the graduated cylinder with masking tape. • Pour 100 ml of vegetable oil into one graduated cylinder. Label the graduated cylinder with masking tape.

6. Procedures • Record in notebook or on a data sheet how much liquid is in each graduated cylinder. • Place graduated cylinders in the window. • The next day, measure and record the amount of liquid in each cylinder. • Continue to measure and record the amount of liquid in the cylinders for 7 days.

7. Day 1 • All liquids are at 100 ml.

8. Day 3

9. Day 7

10. Day 7

11. Data

12. 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.

13. 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.

14. Thoughts from the Class “It was fun to watch the experiment, especially since most people thought water was going to evaporate the fastest.” – Abby “I was surprised about the hand sanitizer because I thought the water would evaporate faster.” – Lily “I think everyone expected the dark corn syrup to not move because it is so sticky.” – Josie “My hypothesis was really great – I was almost right!” – Viktor “I was surprised that water didn’t evaporate that fast.” – Christian “I was surprised that vegetable oil didn’t evaporate.” – Sophia “My hypothesis was right! It was hand sanitizer that evaporated the most.” - Evan “I was surprised because at first 7 Up was evaporating the fastest, then the hand sanitizer evaporated the fastest.” – Reese and Katey