Suppose that a substance in a beaker is heated over a burner in a science lab. which observation would most likely indicate that a chemical change has occurred in the substance? if the substance is a liquid or solid, an increase in temperature would indicate a chemical change. if the substance is a liquid, a change of some of the liquid to gaseous form would indicate a chemical change. if the substance is a solid, a change of some of the solid to liquid form would indicate a chemical change. if the substance is a liquid or solid, production of an odor would indicate a chemical change.

The Answer is D)

Explanation:

If the substance is a liquid or solid, production of an odor would indicate a chemical change. Chemical changes include odor, color change, etc.

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poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?