Matter 6: Coca-cola! :) Yum!

I chose coca-cola for my next matter.

This yummy drink is bubbly and fizzy. It has a dark color and it tastes amazing! 

When a bottle or can of coca-cola is opened, the liquid begins to slowly evaporate. The molecules take the shape of its container (the room) and can sort of be smelled if you’re nearby.

Coca-cola is a colloid because its solution is evenly spread out.

Matter 5: Chlorine

For this matter, I chose chlorine. Too much of it burns our eyes, and not enough of it invites unwanted bacteria and germs. Chlorine has a lot of chemistry to it. For now, I will just mention some of it’s physical and chemical properties.

Before chlorine is added to a pool, it is in the form of a tablet. It’s called Tri-chlor (short for Trichloro-s-triazinetrione). It’s a stabilized form of chlorine. It changes from a solid to a liquid when added to the pool water.

Here’s a chemical equation for chlorine: Cl2 (chlorine) + H2O (water) à HOCl (hypochlorous acid) + HCl (hydrochloric acid).

Matter 4: Cucumber & Melon hand&body cream

Lotion. Essential for every girl to use. Not only does it keep one’s skin moisturized, it can smell incredible as well! For this blog post, I decided to use my cucumber & melon hand & body cream. This solution starts out as a soothing green-tinted liquid. When applied to the body, this cool creamy substance begins to evaporate. This is the reason that one can smell certain lotions. The molecules evaporate (turn into a gas) and begin to take the shape of its container (the room). We can detect the smell since the gas molecules are all around us. The phase change confirms that this solution went through a physical change.

Some lotions are colloids and some are not. It all depends on the ingredients. The lotion in the picture above is in fact a colloid. That’s one of its chemical properties.