Step one in cheesemaking is acidifying the milk to separate curds (which become cheese) and liquid whey (water, proteins, and other stuff).
Subjects: Chemistry
-
Spitting Sparks
Salt water and acids both conduct electricity. So what about saliva, which is both salty and acidic?
-
Making Butter
One of the simplest food science activities is one of the best. Transform cream into butter!
-
What Is Soap?
Soap molecules get along with everyone. One end likes water and the other likes oils and grease. So the soap brings the two together. Make a little soap to see how this works!
-
Bubbles Under Pressure
What causes bubbles to form in carbonated beverages? Obviously it’s carbon dioxide, but why do bubbles form rapidly (or even explosively!) sometimes, while other times the bubbles are under control?
-
Burning Water
Make acetylene the old fashioned way – using carbide and water – and set the water on fire!
-
The Amazing Flowing/Non-flowing Fluid!
Cornstarch and water combine to make a marvellous substance that looks like runny goo until you apply pressure to it, at which point it turns stiff like bread dough. It’s a non-Newtonian vicsoelastic fluid!
-
Bubbles in Baking
Why are breads, cakes, and pancakes fluffy? Where do all those bubbles come from, and why are they important?
-
Build a Simple Electric Guitar
A powerful magnet is the essential component for getting the classic rock and rool guitar sound!