Kristel and Jhosie's science fair project
CLEAN WATER
Is
our water clean?
We did this project to determine how clean our water was.
The ways we used to check if the water was clean was, using agar bacteria food) and checking for the residue. The way we checked for the residue was by boiling the different types of water in flasks and boiling them dry.
We tested five different types of water, We used tap, filtered, distilled, fountain and bottled water. We found out that the distilled water was the cleanest . Not the distilled water that comes from the water dispenser but the actual steam when boiled. The dirtiest water we tested was bottled water.
Science
Fair Outline
Opening
Thoughts:
-How clean is the water?
-How are we going to test this?
-How many experiments are we going to do?
-What are we going to use?
Question:
How clean the water is and how much residue there is.
Problem
Statement:
What is the effect of drinking water on how clean it is and how much residue there is afterwards.
Hypothesis:
We think that distilled water will be the cleanest and won't leave any residue behind.
Materials:
Water typed that we used:
-fountain -distilled -tap -bottled -filtered, flasks, burners, petri dishes, Agar, streaker, beakers, tape, and pressure sterilizer.
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Method:
Step#1: We had to make our agar solution. We also had to put it in the pressure sterilizer. We waited until the agar was made.
Step#2: We then put the Agar into the petri dishes and waited for it to turn solid.
Step#3: We went to go collect all the water types that we were going to use for our experiment.
Step#4: We put the water in sterilized test tubes.
Step#5: We got a streaker and we put it in the flame from the burner. We hold the streaker into the blue part of the flame. We do this because the streaker has to be clean therefore we sterilize it with the clean flame from the burner.
Step#6: We then put the streaker into the test tube with the water in it. After we dipped it in the water we made a squiggly line onto the solid agar inside the petri dishes.
Step#7: We sealed up the petri dishes with tape and put it aside.
Step#8: Do steps 5 to 7 for all the types of water that we collected.
Step#9: We had to make water residue by putting 250ml of water into a 500ml flask.
Step#10: We set up 5 stands and 5 burners. Then we put the different types of water inside the clean flasks on the stands.
Step#11: We put the burners underneath the flasks and we waited until they were all boiled dry.
Step#12: We recorded our results.
Sources
of error:
The amount of water we put could be different and the amount of pressure we put on when were doing the squiggly lines. Some of the utensils we not sterile.
Conclusion:
Our conclusion is that distilled water is the cleanest drinking water and the one that doesn't leave any residue behind afterwards. We accept our hypothesis.
Application:
We recommend that you drink distilled water because it is the cleanest water there is!