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how to make a soap powered boat

Propel a paper boat using nothing more than washing-up liquid! ... read more

does chewing gum really stay inside you for years

Chewing gum is made from synthetic chemicals that the body can’t break down. ... read more

what is chemistry

Chemistry is the study of substances and the changes that happen to them. Substances are things like food, clothes, and medicine. Chemistry is very important. Plastic bags and shoes with rubber soles would not exist without chemistry. Fuels for cars, airplanes, and rockets would not exist without chem... read more

why does looking at the sun damage your eyes

Never look at the Sun unless you are using specially designed glasses that are intended for this purpose. ... read more

how do polarised sunglasses work

Polarised sunglasses have filters that block some light waves while letting others through. ... read more