Pseudocraters or rootless cones are peculiar volcanic formations with an explosive origin. They do not form from magma coming from deep underground. They are caused by lava covering a water-rich layer ...

One experiment was entitled 'Frothy the Snowman'. Our objective was to build a model snowman using sodium bicarbonate, sodium chloride and an anionic detergent; the limbs were pasta, the nose a piece ...

This experiment shows what ... vinegar reacts chemically with the bicarbonate of soda, which is an alkali. The reaction produces water, a salt called sodium acetate, and the gas carbon dioxide ...

STEP 1: Light the candle. REMEMBER: lit candles are a fire risk, so make sure you have an adult with you! STEP 3: Add a small teaspoon of bicarbonate of soda. The scientific name for this is ...