Adding salt to water makes it salty. Which of the following is true regarding this change?
A
It is a chemical change because a new substance is formed
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B
It is a physical change because the original substances can be recovered
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C
It is a chemical change because there is exchange of heat
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D
It is a physical change because there is a slight change in colour
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Solution
The correct option is B It is a physical change because the original substances can be recovered Adding salt to water makes it salty. This is a physical change because the original substances can be recovered by evaporation. In a chemical change, substances cannot be recovered.