Question

Sodium sulphate is added to water and is made to dissolve into it by stirring. A salt solution is obtained which is then boiled leaving behind a residue
1)is this a physical or chemical change.
2)residue left
3)is the change reversible or irreversible
4)are the composition and properties of salt changed

Answer 1

$\huge\underline\mathfrak \pink {Hello\:mate;}$

1) This is a chemical change.

2) Sodium and sulphate ions.

3) It is reversible.

4) Composition and properties of salt are not changed.

$\huge\underline\mathfrak\blue{Hope\:it\:helps\:you}$

Answer 2

Answer:

a physical change

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