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Science Guy: Valentine’s Day candy not just for eating — use it to learn more about science

Do you typically get too much chocolate candy for Valentine’s Day? If so, don’t trash it! Our “Science Guy” Jason Lindsey and a kid scientist show us how your Valentine’s Day candy can be used to learn more about science.

Go to – and click on Hooked on Science for this experiment and others that might get you and the entire family “Hooked on Science.”

Does your sweetheart get you a lot of this around Valentine’s Day? Boxes upon boxes of chocolate? Yeah, it sounds delicious, but some people don’t like a lot of chocolate, but don’t pitch it in the trash, my science helper, Brynna and I are going to show you, how you can use chocolate to better understand why some thinks float and somethings sink.

You’ll notice, already in the bottom of our tub of water, we have some candy in there, let’s pitch the rest in there Brynna and let’s see what’s happening. You’ll notice, wait, that one floats, so does that one. Why are they floating? Because they are less dense than the water.

Why are the ones at the bottom sinking? Because they are more dense. Good job! The ones on top are filled full of air. The ones on the bottom, well they have the good stuff in them and it makes them more dense, like caramel, as well as peanuts, maybe pecans, you know, candy nowadays has all kinds of ingredients on the inside, and that could make them more dense.

Valentine’s Day Candy Drop


· Valentine’s Day Chocolate Candy
· Water
· Transparent Container


STEP 1: Fill the transparent container half of the way with water. Is the water a solid or a liquid and why? Describe the water by using its observable properties.
STEP 2: Is the Valentine’s Day chocolate candy a solid or a liquid and why? Describe the candy by using its observable properties.
STEP 3: Drop the candy into the water and observe. What happened? Develop a model to describe how the candy that floats is made of particles too small to be seen.


Most of the candy will be denser than the water and sink to the bottom of the transparent container. Some of the candy will be less dense, when compared to the water, and float. Each piece of candy contains different ingredients. Those pieces with a lot of air inside, float. Go to www.hookedonscience.org for more experiments that might get you and your family “Hooked on Science.”

To see more Science Guy experiments, click here.


Jason Lindsey is an award-winning science educator and author. Jason studied science and journalism at Western Kentucky University, focusing on general science with an emphasis in meteorology and climatology. Each year he performs hands-on science experiments at hundreds of schools and community events throughout the United States, as well as produces and hosts a hands-on science segment airing on television stations across the nation. He previously worked as a chief meteorologist, backpack journalist, science reporter and webmaster.

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