If you know what the everyday items you use are made of, have you ever wondered what the THOSE are made of? The answer is molecules. I chose to make a model of steel, because so many things are made of it, and here are some examples.
There is a lot of steel in your everyday life. There are structures everywhere that are made of steel, and if you have a newton’s cradle, then that is steel too! Even your silverware is steel! Steel is made up of 3 CO’s and 1 CA.