which sample is a pure substance?\nzinc oxide\nsugar dissolved in water\npond water\nsoil
which sample is a pure substance?\nzinc oxide\nsugar dissolved in water\npond water\nsoil
Answer
Answer:
A. zinc oxide
Brief Explanation:
A pure substance has a fixed - composition. Zinc oxide is a compound with a definite chemical formula. Sugar dissolved in water is a solution (mixture), pond water contains various substances (mixture), and soil is a heterogeneous mixture.