In science we have been learning about Properties of Matter. Properties of matter are the ways that we can describe matter. Some physical properties of matter are: weight, texture, color, buoyancy, transparency, and many others.
Last week we did an experiment to learn more about absorbency – the ability to soak up liquid.
We compared four types of paper products – tissue, napkins, store paper towels, and school paper towels – to see which was the most absorbent.
The other week, In our experiment about buoyancy when we made eggs float, we talked about why different groups were able to make their eggs float with very different amounts of salt.
We decided that science experiments need to be fair.
This means that all the materials and conditions need to be identical, except for the one thing that you are comparing.
As Amanda wrote, “It’s important to have everything equal in a science experiment because if you have a little more of one thing in different tests, then it won’t give you accurate results.
So, we had to make everything equal and only change the type of paper for each test.
We cut all the paper to 4 x 4 inch squares, we measured the water to 15 ml., and we kept track of how many squares of paper it took to soak up all the water.
Here is a slideshow of what we found out:
In each group’s experiment, the store paper towel used the least amount of squares to soak up the water. That means that it was the most absorbent.