We were talking about ear wax, and he asked “what is wax?” I gave him examples like candles and beeswax, but he hasn’t really observed enough of those things for the examples to help.
In: Engineering
Different things are solid, liquid, or gas, at different temperatures.
Look at water and ice and steam. Look at how butter softens before it melts and hardens in the fridge. Look at rock and lava.
Wax will turn to liquid when heated, and become more solid when cooled.
Wax is a kind of oil, like petrol or grease or tar or skin oil. Some kinds of wax are produced by animals and plants, like ear wax or bees wax or waxy plant leaves. Natural waxes help protect things against stuff like bacteria or stop things drying out.
Mythbusters did an episode making ear wax candles. Your child will love that stuff. Show him the entire series.
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