004 making Invisible Ink

1
004 MAKING INVISIBLE INK
MATERIALS REQUIRED
Lemon juice (with sugar) Brush White paper Candle
2
Prepare lemon juice and write SCIENCE IS FUN
with it on a white paper.
SCIENCE IS FUN
3
Dry the paper and it remains a white sheet only.
4
SCIENCE IS FUN
Now show the paper on a candle flame and the
letters are visible. This is due to charring of
sugar in lemon juice.