Scientific Experiments

With The Golden Dragons (5th Grade)

In Fifth Grade, science is serious business. Every week we complete a scientific experiment in order to better understand the scientific phenomena that surround us. To launch a rigorous scientific process, we are learning to formulate a strong initial question, to write a hypothesis, to design a complete list of materials, to make precise observational drawings, and finally to form conclusions that support our theory. We have been lucky enough to explore numerous experiments…

 

Did you know that an egg can become bouncy? We do, and it is thanks to vinegar and corn syrup or maple syrup. To introduce the topic, we looked at the parts of an egg. We were able to observe that the egg has many parts and that each of these plays an important role in protecting the baby chick. By soaking the egg in vinegar for an entire day, the external shell made partly of calcium is removed thanks to the acid of the vinegar, giving way to only the internal, flexible shell. When we then put the egg in corn syrup or maple syrup for a second day, the internal shell is reinforced, allowing us to make a bouncy egg…cool, right?

​Another very special experiment was dancing popcorn. In effect, everyone knows that popcorn kernels sink, they don’t float in water. Normally the weight of the kernel is too heavy, and it rapidly sinks to the bottom of a glass of water. But quickly, thanks to an incredible chemical reaction, we were able to gradually make popcorn dance in a bowl of water. What how is this possible?...Simply by an acid-base reaction. You need to mix baking soda and vinegar in colored water. The resulting chemical reaction allows for bubbles to attach to the kernel and voila, they climb towards the top. Once they make contact with the air at the surface of the water, the bubbles pop, making the grain sink again to the bottom of the water…And the up and down dance begins! What a beautiful centerpiece for your table around Halloween, right?

Next, a truly fascinating science experiment: fluorescence, a topic I find fascinating, where we discovered the different colors of pigments that surround us. In effect, we were able to understand the impact of different types of light on fluorescent and conventional colors. Using a blacklight, we were able to make fluorescent colors shine in an even more spectacular way. A few weeks later, we used this knowledge to create a truly special and spectacular work of art…

 

As you can see, there is a lot of life in our class. It is true, science is a subject that we passionately devour!

More photos:

- Fluorescent

- Vendée Globe

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