Science

#667 What are food additives?

What are food additives? They are things that are added to food to preserve the flavor, or improve the taste, appearance, or other qualities. There are a huge number of food additives and some of them are completely natural. Salt and sugar are both food additives. Humans have been using food additives ever since we

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#662 Why do ducks float?

Too busy to read? Watch on YouTube Why do ducks float? They float because of their center of gravity, their hollow bones, the air in their feathers and air sacs, and the oil on their feathers. Whether or not something floats has to do with the object’s density and the buoyancy of water. Water has

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#643 What makes things sticky?

Watch on YouTube What makes things sticky? When the molecules in two substances are attracted to each other things become sticky. The stickiness of an adhesive and the stickiness of something like maple syrup are a little bit different from each other. Let’s look at the stickiness of glue, adhesive tape, and maple syrup. There

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