States of Matter by M.M.
We are the three states of matter, but we don’t act the same.
I can move freely, so what is my name?
I can be all kinds of shapes, and I am the least dense of all
My name is called a gas, and I will not sink or fall
The next state of matter, is everywhere we look
I am the densest of all, one example is a book
You can call me a solid, and I always hold my shape
I can be heavy like a rock, or as light as a piece of tape
The last state of matter, can take all shapes and forms
It can fall from the sky, you have seen it in storms
You can pour it and drink it, and the volume can change
You can stretch me and bend me, it’s really so strange
My name is a liquid, and I like to flow
And here is one more thing, I think you should know
We are all forms of matter, and we are everywhere in sight
And our density depends on, if our atoms are packed tight.
Last week, we learned about how a material could change states. We explored the processes of melting (solid to liquid) and freezing (liquid to solid). We experimented with chocolate to see which temperature would be best to melt it.
Before we start today's learning which is all about water, I'd like you to use your knowledge from last week to consider the ideas of each child below. Which child do you agree with and why? Why do you not agree with the others?
This week, we are going to look a little closer about how water can exist in three different states: solid (ice), liquid (water) and gas (water vapour). We know about freezing and melting to change state between a solid and liquid. But how does water become a gas? You will learn two new key words today and will conduct three mini experiments to explore water in all three states.
CHALLENGE: Now we have learned all about the different states that water appears, I would like you to consider the key question below.
Think about the following:
- How would polar bears and penguins live?
- How could you make a cool drink without ice?
- What would happen to all the snow in winter?
- What would happen to the sea levels?