Question

Very short answer questions
1.

Water is a pure substance but salt-water is an impure substance'. Justify.


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Answer 1

Answer:

water is pure substance because the no of hydrogen and hydroxide ion are equal but in impure water many other chemicals are present

Answer 2

Answer:

Pure substances are made up of same type of particles or atoms. All the elements and compounds are pure substances because they contain the same kinds of particles.

Examples: Hydrogen, carbon dioxide