Some crystals look very similar but here are a couple of ways to tell them apart. The salt may look a little grayer than the sugar which may look whiter than the salt. The alum may sparkle a little ...

One of the staples of kitchen chemistry for kids is making sugar crystals or rock candy. Why not? It is educational and it tastes good, too. [Science with Screens] has a different kind of crystal ...

but this isn’t always necessary (in our experiment, we dug our crystals out with a fork). We used Epsom salt, but you can use other solids, including table salt or sugar. These will each behave ...

The Carter Family: (l-r) Claire, Martin, Sarah, Nathan and the experimenter, Matthew, at the front When 12-year-old Matthew Carter saw how much sugar was in his favourite fizzy drink, he decided ...