Option 1:INVISIBLE INK WITH LEMON JUICE
Materials:
-Half a lemon
-Bowl
-Cotton bud or paintbrush
-White paper
-Lamp, light bulb or heat source
Instructions:
-Squeeze the lemon juice into the bowl.
-Think about a secret message
-Dip the cotton bud into the liquid and write the message on the white paper.
-Wait for the juice to dry.
-Heat the paper by holding it close to a light bulb.
-Read the message!!!
Option 2:
MAGIC MILK
Materials:
-Whole milk
-Food colouring
- Dish
- Cotton bud
- Dishwashing liquid (fairy or similar)
Instructions:
1. Put ½ cup of milk into a dish.
2. Add 2 drops of food colouring in different areas of the dish. You can use 4 different colours.
3. Put a drop of dishwashing liquid in the cotton bud.
4. Put the cotton bud with the dishwashing liquid into the centre of the dish of milk.
5. Observe what happens.
