Does it sink or float? And why do some liquids mix together easily (think lemon juice and water for some tasty lemonade), when others don’t mix together at all?
Here is a list of nine simple science experiments that deal with density of various objects and liquids. Enjoy!
Density Experiments – Does It Float or Sink?
It’s fun to experiment with various objects to determine if they will sink or float and then to speculate why.
The Floating Egg – Eggs naturally sink in water, but we made them float by adding one simple ingredient to the water. Want to know what it was? Find out here.
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Does Clay Float or Sink – This is a great experiment that show that it’s not just an objects density that impacts if it will sink of float. The shape of the object plays an important role as well.
Bottle Diver Science Experiment – Learn how density is used to make this scuba diver move up and down in the bottle.
Why Does the Heavier Orange Float? – Use this experiment to show that the weight of an old isn’t the indicator to use to determine if it will sink or float.
What causes some pop cans to float and some to sink? – All the pop cans are the exact same shape, size and weight, but why do some of the cans float while others sink?
Density Experiments – The Density of Different Liquids
Not only is it fun to experiment with the density of various objects, but it’s also pretty amazing to experiment with the density of different liquids.
Rainbow in a Jar – This is one of our all time favorite density experiments. It takes a little pre-planning to ensure you have all the necessary liquids on hand, but the end result is quite fascinating.
Mixing Oil & Water – Will the two liquids stay mixed together? Only if you add a third ingredient into the mix! Do you know what it is?
Homemade Lava Lamp – This is another fun experiment that shows how oil & water don’t mix. Then it takes it one step further by adding one extra ingredient that causes a cool chemical reaction and results in the “lava lamp” experience.
What about you? Do you have any favorite experiments that you use to teach about density? I’m always looking for new ideas, so it you have one, leave a comment below. Thanks!
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