Behaviour of Matter - Expansion
When particles are heated, they begin to move around more and the space between the particles increases, causing the substance to expand. The diagram below shows the effect of heat on particles in a solid substance. Notice that the particles are vibrating more. Because of this, they are bumping into each other and the distance between the particles increases. This means the solid will expand
Describe the effects of heat on:
1. The movement of particles - They move around more and more
2. The size of the particles - They start to expand
3. The space between the particles - The space increases
4. The size of the substance - They expand as well
Aim:
To observe contraction in gases
Equipment: Aluminium can, scissor tongs, Bunsen burner, heatproof mat, tripod and open container of water
Method
1. Set up a Bunsen burner underneath a tripod and gauze mat.
2. Pour approximately 50-60 mL of water into your can. it should be no more than 1/4 full
3. Heat the can of water until steam is seen escaping from the top.
4. Quickly, but very carefully, invert the can as you plunge it into a container of water.
Reflection
Well the experiment was simple since all you did was heat up a can with 50 mL of water and once it's smoking you just plunge it into the container full of water upside down and it makes a small explosion on the inside.
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