Which of the following is not a potential sign of a chemical change?

How can a chemical change be reversed

Which of the following causes a chemical change

Which of the following results in a mixture

Which tool is best for separating a mixture of sand and water

Which of the following is a physical change

Matter is defined as anything that

The smallest unit of a substance that behaves like the substance is a(n)

The chemical for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid

Which of the following is an example of a gas - liquid

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