Students then carry out a second reaction with calcium chloride and baking soda in the universal indicator solution. In this example, students observe the production of both a gas and a solid, a color ...

A little water helps expose the sodium so it can react with the chlorine gas. The reaction releases a lot of heat as the ionic compound sodium chloride is formed. A sodium and chlorine atom are near ...

Ammonium chloride is a white solid. It breaks down when heated, forming ammonia and hydrogen chloride. When these two gases are cool enough, they react together to form ammonium chloride again.

Compounds with a phenol group will form a blue, violet, purple, green, or red-brown color upon addition of aqueous ferric chloride. This reaction can be used as a test for phenol groups. Mix several ...

The active ingredient in some laundry sanitisers, benzalkonium chloride, can cause adverse reactions in some people. Picture: Supplied Dr Armour explained that benzalkonium chloride is an organic ...

No, it is not just chlorine you smell when you walk by the pool. That strong smell is a mix of chlorine and other things, ...