Mixing one or more
substances is an important step in producing foods,
detergents, paints, medicine and many other products.
For example soda
manufacturers mix water, sugar, food coloring, CO2 gas
and some flavor in order to produce their soda drinks.
Paint manufacturers mix some glue and some pigments
(color powder) in order to make paint. In making a model
volcano, I mixed vinegar and baking soda. In order to
make green color, I mixed yellow and blue colors. Almost
in all cases, the result of such mixtures is a new
product that does not look like the original
ingredients. Are these chemical changes?