I think they test ideas about chemical evolution by doing experiments. Hope this helps
Planets move slower when they are furthest from the sun. But when they are closer they move faster because of the gravitational pull of the Sun.
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There are the 3 copper atoms in 3CuSO4. I hope this helps!!
<span>There are 2 carbon atoms in ethanoic acid. Other name of such substance is acetic acid. It is a colorless liquid carboxylic acid with the chemical formula CH3COOH. It has antibacterial and antifungal properties.</span>
Democritus, a Greek philosopher, first developed the idea of atoms (around 460 B.C., I believe).
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