What to remember

What to remember

• In this experiment we saw a real chemical reaction between an acid and a base, creating gas and foam.
• With egg white, proteins with positive and negative charges help trap the bubbles.
• This is why the foam is stable and colorful.

What is happening ?

Chemical reaction

Foam formation

Egg white

Baking powder → sodium bicarbonate (base)Vinegar → acetic acid (acid) Acid + base → CO₂ (bubbles, foam)

CO₂ trapped in bubblesProteins make a net around bubbles Result → thick, stable foam Without egg white → foam disappears fast.

Made of proteinsProteins have positive and negative charges Opposite charges attract Same charges push away