Explain, in terms of electrons, why aluminium is reduced and
oxygen is oxidised during the
electrolysis of aluminium oxide

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

How do dying stars contribute to the formation of planets

Find the mass, in grams, of 5.00*10^23 molecules of f2