Salty Sea Egg
Will an egg float better in salt water or tap water?
We think that an egg will float better in salt water because the salt water is more dense than tap water.
Materials:
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Safety Procedures:
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Preparations:
- Prepare at least 3 cups of tap water in the large container.
- Label each cup with #1,2, and 3.
- Prepare salt in a separate container.
- Arrange the three cups on a surface.
Procedure:
- Add 1 cup of tap water to each cup.
- Add 1 Tablespoon of salt to cup #2 and stir to dissolve the salt.
- Add 2 Tablespoons of salt to cup #3 and stir to dissolve the salt
- Gently place the egg into each cup.
- Observe in which cup the egg will float.
The Science behind it
The egg sinks in the tap water because the egg is more dense than the tap water. Density is mass divided by volume.
The egg will be buoyant and float in the water if we increase the density of the water. Buoyancy is the force that causes objects to float.
The water's density could be increased by adding more molecules.
The molecules of salt, sodium (Na) and chloride (Cl) binds with the molecules of water, hydrogen (H2) and oxygen (O) to increase the density.
Therefore, the egg will float better in the salt water.
Conclusions
This proves our hypothesis that the egg will float in the salt water.
In conclusion, our hypothesis was correct. We were correct because the egg sank in the tap water but floated in the salt water. From this experiment, we learned that we need the right amount of salt to create higher density than the egg to make it float.
In conclusion, our hypothesis was correct. We were correct because the egg sank in the tap water but floated in the salt water. From this experiment, we learned that we need the right amount of salt to create higher density than the egg to make it float.
About TimmyHi, my name is Timmy. I am in Mrs. Sisca's class. I have a sister and a brother named Chloe and Ethan. My favorite subject is math, reading, and science. I like to ride my bike and scooter.
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About SeanHi, my name is Sean. I am in Ms. Vita's class. I like playing on Minecraft and Wii U games. My favorite food is chicken nuggets.
I am an only child. My favorite hobbies are making duct tape crafts, playing sports and using electronics. |
About both of us.We both like playing basketball. We both have black belts in Taekwondo. We also both play the clarinet.
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