Behavior Of Matter - Contraction.

The Imploding Can 

Aim: To observe contraction in gases.

Equipment: Aluminium Can, Scissor Tongs, Bunsen Burner, Heatproof Mat, Tripod, Gauze Mat & and open Container of Water.

Method: 

1. Set up the bunsen burner underneath a tripod and gauze mat.

2. Pour Approximately 50-60mL of water into your can.

3. Heat the can of water until you see steam is escaping from the top.

Carefully grip the can with scissor tongs. Ensure you have a firm hold of the can before lifting it off

the gauze mat.

4. Quickly, but carefully, invert the can as you plunge it into a container of water.

Observations: 

As the steam started to come out we put the can into the water and it crumbled up. At least that is what I would have wanted to happen. Doing this experiment my fellow classmate didn't put the can in the right position when he put the can into the container, it did not implode and I tipped all the water from the can onto our workbench. Eventually our third try worked out really well.  

Explanation:
At first, we evaporated off the liquid. The particles in the cold water started to heat up and when we inverted the can into the cold water the particles cooled down and then it condensed back causing the can to implode.