Unlike limestone, calcium hydroxide—a zero-carbon precursor for lime and cement production—emits only water when heated in a kiln to produce lime. Inspired by this, a UCLA Samueli School of ...

This solution used to be made with sodium silicate, also known as water glass, but is now more commonly made of powdered ...

The best reaction for use in our hand warmers was the 'slaking' of lime. It generated enough heat for our purposes, and involved chemicals (water, calcium oxide and calcium hydroxide) that are ...