1. The Toothpaste Science Fair
By:Haley Chadwell

2. Question Which amount of toothpaste that sat
overnight after adding water had least
amount of toothpaste left in the dixie
cup?

3. Background
I chose to see which toothpaste dissolved fastest in water for my project because I had never done it before and I thought it would be cool to try.When I first started this I thought it would be boring, but it turned out it was fun.There were two parts that I thought were hard to do when I did this and I got my way through it. All in all, I thought that this project was good to do and was fun.

4. Hypothesis If I put water in three dixie cups of
toothpaste and let them sit overnight, then
the Crest toothpaste will dissolve the
most.

5. Variables Independent:Types of toothpaste
Dependent:The amount of toothpaste that dissolve in the the water after sitting overnight.
Constants:Amount of toothpaste, water, and the size of the dixie cups

6. Procedure 1:Gather all materials
2:Place the 3 dixie cups in an aluminum pan
3:Put 2 tablespoon of each of the 3 kinds of toothpaste on different spoons then put them each in a dixie cup
4:Add 2 tablespoon full of water in each dixie cup
5:Let it sit overnight
6:Take the 3 spoons and scoop the toothpaste out of the dixie cups to measure which toothpaste dissolved into the water the most

7. Data-toothpaste
Colgate
20cm
Aquafresh
15cm
Crest
8cm

8. Data

9. Conclusion
1.The toothpaste that left the least amount of toothpaste in the cup was the Crest
2.I added 2 tablespoon full of water to the 3 cups.
3.I let the three cups of toothpaste set overnight after adding water was the water had sunk I
4.I added 2 spoon full of water but after it sat overnight the least amount of toothpaste left in the cup was crest and I thought the aquafresh would be the least but the crest was
5.I learned that if u leave toothpaste in a cup overnight after adding water that the water sunk into the toothpaste
6.The only thing that I had a problem with was trying to scoop all the toothpaste off the spoons so all the cups would have an even amount of of toothpaste in all of the dixie cups