1. What is Forgery?
Forgery is the copying of another person writing or signature.
Criminals use it for signing cheques falsely.
Aim: to figure out which pen was used to write a forgery letter
Hypothesis: We will know what pen was used.
Method ( what you need for this Experiment): Beaker, Filter paper, Pen, Cello-tape and Water.
Method:
1. Put a dot on the filter paper 2 cm up
2. Put 50ml of water in the beaker
3.put the paper in the water and leave it for 5 minutes
4. Attach a piece of the letter to the paper with cello-tape
5. Place the paper in 50ml of water in a different beaker
6. Compare the two ink marks.
Here are is a picture of both the beakers.
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