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A change of state from one form to another is known as
Physical change
Chemical change
Periodic change
Useful change
A change of state from one from to another is known as a physical change.
When iron filing is added to copper sulphate solution, it displaces copper from its solution and the colour of the solution changes from
Blue to brown
Blue to green
Green to blue
Blue to red
When iron filing is added to copper sulphate solution, it displaces copper from its solution and the colour of the solution changes from blue to green.
Displacement reactions are reactions in which
Less reactive metal takes the place of more reactive metal.
More reactive metal takes the place of less reactive metal.
Two or more elements are combined to form a single product.
Only one reactant decomposes and gives two or more products.
Displacement reactions are reactions in which more reactive metal takes the place of less reactive metal.
Which of the following reactions is a displacement reaction?
A + B → AB
AB → A + B
AB + C → AC + B
A + B + C → ABC
AB + C → AC + B is a displacement reaction.
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