Jobs of a Preschooler · Ramblings

Simple Science: Do Molecules Move Faster in Cold Water or Hot Water?

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As I had mentioned in a previous post, my daughters and I have been using Apologia Exploring Creation with General Science for our science course this year.

The companion student notebooks (I purchased one for each of my daughters) have been very useful. They have an entire section devoted to scientific lab reports that go along with the course. My daughters are required to complete each of the scientific lab reports when we do the experiments.

Scientific Lab Report 1.2(A2)

My daughters have been getting so much practice following the scientific method lately that they even reminded me of it when I recently declared “Our Grand Pumpkin Experiment”.

We have been able to complete all of the recommended science experiments together so far. I’m hoping we will be able to complete them all, but we will see. There are over 50 within this course!

You can find all of the products Apologia has to offer here.

Below is a science experiment we recently completed during our reading on atomic motion.

Does food coloring mix faster in cold water or hot water? 

We gathered the following materials.

  • 2 quart sized canning jars without lids
  • green food coloring
  • small pot of hot water (heated on stove)
  • cold water
  • hot pad
  • funnel
  • eye protection

Then, we completed the steps listed below.

  • Fill one of the canning jars up to the 400 ml line with cold water.
  • Run the other canning jar under warm to hot water from the faucet. (I did this because I was worried the jar would break with the sudden temperature change of the hot water.)
  • Fill the warm canning jar to the 400 ml line with the hot water. Place on hot pad.
  • Put one drop of the food coloring into each jar at the same time.
  • Watch what happens.

Will the molecules move quicker in the hot water or the cold water?

Does food coloring mix faster in cold water or hot water?

The answer is pretty obvious when you look at the picture. The molecules moved quicker in the hot water than the cold water.

Does food coloring mix faster in cold water or hot water?

Another simple, yet fun experiment completed!

Jobs of a Preschooler- I'm a scientist...

“I’m a Scientist…” from Jobs of a Preschooler

 

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