Sinking Smoke

This is the first experiment for 2013 which is on 17.1.2013. 

The person in-charged for today's activity is no other than our vice chairperson, Seah Wei Hon.

Do you ever see smoke sinking?  Here, take a look at it!

See. You can even pour it out like water. You have seen it so it is all? 

Nope. We are going to teach you guys how to make smoke sink! Continue reading~

Firstly, you need the main material that can create smoke which is the matches. Our main motive is to make smoke sink. So, mission cannot be completed without smoke. Now, we have matches but how to light it up? Of course we need Bunsen burner. Then we need a piece of aluminium foil to travel the smoke that will be released when we light up the matches to a container. Before we start burning the matches, the container (conical flask) is put in a refrigerator. 

This is a conical flask in case you wondering what it is

Let the walls of conical flask to be cool. While waiting it to be cool, lets prepare the matches. take around 6 matches and roll it up with aluminium foil. The end where the head of matches is places is fold. It is to make sure when we burn it, the smoke will not come out through there. Make sure there is a opening of the foil at the end with the tail of matches. 

Its time to take out the conical flask from the refrigerator. The rolled aluminium foil is out at the mouth of the conical flask. The head of the matches is facing upwards. Light up the Bunsen burner then burn the aluminium roll where the head of the matches were. Then you can see smoke coming out from the opening of the roll of aluminium foil into the conical flask. Then you can ready to pour out the smoke. It will flow like water out of the conical flask. 

You can watch the video below to get a better idea on what is happening.

Sinking smoke

So, now lets get your material and make the smoke sink!

The explanation behind this experiment:

The wall of the conical flask which is cool will cool the smoke. Therefore, make it heavier than air surrounding us. As we know cool object sinks and hot object rises. With this theory, the cool smoke sink. 

~Shiuan Yih~