Question

Give one example to show that when substances are mixed,it may result in a chemical or physical change depending on the conditions

Answer 1

example for physical change=salt in water
example for chemical change=curd in milk

Answer 2

ANSWER:

     When the sugar is mixed with water there is a physical change as well as chemical change. The disappearance of sugar cubes is the example of physical change and the solution made from the sugar and water is known as chemical change.  

EXPLANATION:

• Physical changes is defined as the change in in a body which is physical in nature like shape and size.
• The chemical change is defined as the change in a substance in its chemical property.
• Sugar solution is a perfect example of physical as well as chemical change.
• Some of the changes are reversible and the other are irreversible.
• The sugar solution comes in the category of reversible changes for reversible chemical reaction.