Bicarbonate of Soda Day
December 30 · Level 7 · #818 of 2238
Bicarbonate of Soda Day honours the humble white powder found in nearly every kitchen. It bakes, it cleans and it powers plenty of simple home experiments.
How it is celebrated: people bake fluffy treats, scrub pots and sinks, and build a fizzing soda-and-vinegar volcano with the kids. It is also a good excuse to check whether the box in the cupboard needs replacing.
When baking soda meets an acid it releases carbon dioxide. That is why Irish soda bread rises without yeast: the buttermilk supplies the acid.