When particles are heated, they begin to move around more and the spac between the particles increases. causing the substance to expand.Notice that the particles are vibrating more. Because of this, they are bumping in a solid substance. This means the solid will expand.
1. The movement of particles
2. The size of particles
3. The space between the particles
4. The size of the substance
The Imploding Can
Aim: To observe contraction in gases
Equipment: Aluminium can, scissor tongs, Bunsen Burner, heatproof mat, tripod, gauze mat, an open container of water.
Method:
1. Set up a bunsen burner underneath a tripod and gauze mat.
2. Pour approximately 50-60mL of water into your can. It should be no more than 1/4 full.
3. Heat the can of water unti steam is seen escaping from the top.
Carefully grip the can with the scissor tongs. Ensure you have a firm hold of the can before lifting it off the gauze mat.
4.Quickly, but very carefully, invert the can as you plunge it into a contianer of water.
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