April 1st marks the celebration of Easter in 2018, an annual holiday widely celebrated by Christians worldwide. Just in time for Easter, we’ve prepared this simple egg experiment that you can try with your child over this long weekend.
You can turn raw eggs in your kitchen into colourful bouncy Easter eggs! These colourful bouncy eggs are not only fun to play with, they also look great as an Easter DIY artwork! (Fun Fact! Did you know that Easter eggs are said to represent Jesus’ emergence from the tomb and resurrection?)In this science experiment, we will be experimenting with 4 different solutions to see how the raw eggs react to each of the solution. The solutions are mainly:
- Vinegar with Food Colouring
- Vinegar with Highlighter Ink
Here is a list of materials you will need:
- Glass Jar / Cup
- Clear Vinegar
- Food Colouring
Step 1: Fill a transparent cup half full of tap water and gently drop a raw egg in.
This serves as an experiment control, which is useful to help your child visualise and understand how water and vinegar have different effects on the egg.
Step 2: Fill a transparent cup half full of vinegar and gently drop a raw egg in the cup.
Step 3: Repeat step 2. But this time round, try adding different food colouring or even highlighter ink into the cup of vinegar.
Step 4: Leave the transparent cups untouched for 1 to 3 days.
Step 5: Take the egg out from the cup and rinse it under tap water to clear any remaining egg shell and residue. You will notice that the egg has a rubbery texture just like a ball.
Now time for fun! Gently lift the eggs, let go and watch it bounce! But beware - try not to drop it from a great height, unless you are ready to get all messy!
So, how does it work?
When the egg is placed in a cup filled with vinegar, the egg shell (which is made of Calcium Carbonate) will react with the acetic acid in the vinegar to release carbon dioxide. This explains why effervescence (bubbles) are seen forming on the surface of the egg.
Through the process of osmosis, vinegar and food colouring will travel across a partially permeable membrane into the egg, causing the egg to not only increase in size, change in colour but also have a rubbery texture that allows it to bounce. In comparison, the egg submerged in water remains unchanged in its appearance or colour.
Watch this video and make your own coloured Easter eggs with your child today! Have fun!