An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

Welcome to science world. Now everyone loves a wee bag of chips, don’t they? Maybe a wee pasty or a battered sausage and if you’ve any sense you’ll cover it in a bit of vinegar. But did you know that ...

These indicators allow you to easily work out if a substance is an acid close acidCorrosive substance which has a pH lower than 7. Acidity is caused by a high concentration of hydrogen ions. or an ...