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Adding cornflour to water is a physical change. The reason this process is classified as such is that it does not change the chemical identities of the substances involved, which is the criterion for a process to be considered a chemical reaction. Technically, the cornflour would slowly hydrolyze in water, which would be a chemical reaction.
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Is cornflour and water reversible?
Yes it is. This is a physical reaction (this means no new substance has been formed), most physical reactions are easily reversed. A glass sinter filter would be able to separate out the cornflour from the water.
Is it a physical change chemical change when salt dissolves in water?
Physical
Is separation of water and gasoline a physical change?
No, it is a physical change. The water and gasoline retain their chemical and physical properties.
What happens when the cornflour and water mix together?
When cornflour and water are mixed,and then heated slightly,it forms viscous jelly type substance. The vicousness depends on the proportion in which they are mixed. Without heating cornflour will remain insoluble in water.
Dissolves in water chemical change or physical?
Dissolving in water is a physical change.
Is cornflour and water reversible?
Yes it is. This is a physical reaction (this means no new substance has been formed), most physical reactions are easily reversed. A glass sinter filter would be able to separate out the cornflour from the water.
Whats stickier flour and water or cornflour and water?
cornflour and water
Is it a physical change chemical change when salt dissolves in water?
Physical
When water is boiled is it a chemical or physical change?
Boiling is a physical phenomenon, a change of phase.
Physical changes of oil and water?
is water and oil a physical change or chemical change.
Is separation of water and gasoline a physical change?
No, it is a physical change. The water and gasoline retain their chemical and physical properties.
Is water absorbed by a paper towel a physical or chemical change?
It is a physical change.
What type of change is freezing water?
Freezing water is an example of a physical change because the material contents of the water has not changed.
Is water condensing a physical or chemical change?
water condensing is a physical change.
Is condesning water a chemical or physical change?
Condensation of water is a physical change.
Dissolves in water chemical change or physical?
Dissolving in water is a physical change.
What happens when the cornflour and water mix together?
When cornflour and water are mixed,and then heated slightly,it forms viscous jelly type substance. The vicousness depends on the proportion in which they are mixed. Without heating cornflour will remain insoluble in water.
