If you mix copper(II) sulfate and sodium carbonate is the result a chemial change or a physical change?

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If you mix copper(II) sulfate and sodium carbonate is the result a chemial change or a physical change?

2006-11-25 07:12:18 · 2 answers · asked by Questions 1 in Science & Mathematics ➔ Chemistry

2 answers

You will get a greenish precipitate of copper carbonate, which is definitely a chemical change - a new substance has been formed.

2006-11-25 07:54:52 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋

CuSO4+ Na2CO3---> CuCO3+ Na2SO4

If you mix them dry, little will happen and that will be a physical reaction. If they are in solution they will react and form a green precipitate, this is a chemical change. They do need to react in solution, however.

You can tell a chemiical change if there is a color change or a precipitate formed or a gas formed.

2006-11-25 09:39:05 · answer #2 · answered by science teacher 7 · 0⤊ 0⤋