The teacher blows into a bromothymol blue indicator solution until it changes color from blue-green to yellow. Students interpret this color change and explain that the solution becomes acidic.

If you're out of balsamic vinegar, you're not out of luck. Grab your trusty soy sauce bottle and maybe a few other ...

Museum palaeontologist Prof Richard Twitchett explains, 'Ocean acidification is a change in the pH of seawater, which is normally around neutral'. The pH scale measures a substance's acidity or ...

This Slow Cooker Grape Jelly Meatballs Recipe is a family favorite with simple ingredients to complement almost any main dish ...

As a serum or moisturizer, hyaluronic acid works by drawing water into the skin and keeping it there. “This miracle skincare ingredient is hydrophilic in nature, which means it attracts and reta ...

Here are the best lip balms to combat extremely dry, sensitive, chapped lips, as recommended by dermatologists, experts, and ...

I don’t pick them until I’ve tasted them over a couple of weeks or more, knowing that the longer they stay on the vine the more intense the flavor for jelly. Even the ripest wild grape is ...

An acid and alkali will neutralise each other and produce a salt and water. This is called a neutralisation reaction. The name of the salt produced can be worked out from the names of the acid and ...

Strain through a jelly bag suspended over a large bowl and leave to drip through for several hours or overnight. If you haven’t a jelly bag and stand you can double strain the mixture ...