Salt Crystal Rocks

An easy science experiment that uses simple ingredients to form salt crystals.

Materials needed:

• PVA glue
• food colouring
• salt crystals
• bowl
• tray
• glitter
• spoon

What to do:

• Pour 2 tbsp of PVA glue into a bowl.

• Add a squirt of food colouring.

• Mix the glue and food colouring together.

• Add 3 tbsp of crystal salt.

• Mix together.

• Using your hands, create a rock shape.

• Dab PVA glue on top of the rock you created.

• Put it in a tray.

• Sprinkle coloured glitter on top.

• Leave for 24 hrs to dry.

Hints and Tips:

• These work really well! The longer you leave them the harder they become.
• Add them to clear jars and call them fairy rocks.
• After mixing salt and PVA glue together, be quick to form your rocks.
• Experiment with using less PVA glue more salt or less salt and more glue to see what happens. Compare these results with each other.