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A physical change is different from a chemical change in two ways:
1) In a physical change no new substances are made; in a chemical change new substances are made.
2) A physical change can be easily reversed; a chemical change cannot be easily reversed.
Dissolving copper sulphate in water does not produce a new substance. The copper sulphate solution is a mixture, not a pure substance.
Also, by evaporating the water you can easily get the copper sulphate back again.
So, dissolving copper sulphate is a physical change.
Sometimes, though, when water is added to copper sulphate, it reacts with the water to form copper sulphate pentahydrate, which is a new compound. This would be a chemical change, but actually dissolving it is indeed a physical change only.
See these sites for more information:
http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/chem_react_2.shtml
http://www.chem4kids.com/files/matter_chemphys.html
What else can I help you with?
Is it a physical change chemical change when salt dissolves in water?
Physical
When salt dissolves in water its a physical of chemical change?
Dissolution is a physical process.
Is dissolving oxygen gas and water a physical change or chemical change?
Dissolving in water is a physical change.
When Sugar dissolves in hot water a physical or chemical change?
When sugar dissolves in hot water, it is a physical change. This is because the sugar molecules are simply mixing with the water molecules but are not undergoing a chemical reaction to form new substances.
When a substance dissolves it undergoes a chemical change physical change molecular change?
When a substance dissolves, it undergoes a physical change, not a chemical change. This is because the molecules of the solute are dispersed in the solvent but do not undergo any chemical reactions. The process of dissolving is a result of the attraction between the solute and solvent molecules.
When salt dissolves in water it is a chemical change or physical change?
Physical
If it dissolves in water is it chemical or physical?
pyhsical change
Is it a physical change chemical change when salt dissolves in water?
Physical
If sugar dissolves into hot milk is it a physical change?
no it is a chemical change
When salt dissolves in water its a physical of chemical change?
Dissolution is a physical process.
If sugar dissolves in water is that a physical or chemical change?
Dissolution is a physical process.
When a molecule dissolves by ionization is that a physical or chemical change?
Dissolution is a physical process.
If a sugar cube dissolves is it chemical change?
Dissolution is a physical process.
Is mixing salt and water chemical?
Mixing salt and water is a physical change, not a chemical change. The salt does not change its chemical composition when it dissolves in water, only its physical state.
Is dissolving oxygen gas and water a physical change or chemical change?
Dissolving in water is a physical change.
Why should copper sulfate dissolution be regarded as a chemical change?
Dissolution of Copper sulphate in water is a Physical Change... It cannot be regarded as a Chemical Change.
When Sugar dissolves in hot water a physical or chemical change?
When sugar dissolves in hot water, it is a physical change. This is because the sugar molecules are simply mixing with the water molecules but are not undergoing a chemical reaction to form new substances.
