What properties of substances can you observe and how do these properties determine the usefulness or hazards of a substance?

Answer 1

You can observe physical, chemical, and characteristic properties of a substance and can be used to determine the usefulness of a substance by, giving us information about the substance usually using our 5 senses which are physical properties. Or being able to describe the substances ability to undergo changes to its composition to produce one or more new substances, chemical property. Or even just being able to identify whether or not the substance is pure or not can help us determine if the substance is hazardous or not. two other properties I did not mention were the qualitative and the quantitative properties.

Answer 2

Properties such as physical state, color, odor, density, boiling point, and solubility can be observed. These properties can determine the usefulness or hazards of a substance by indicating its stability, reactivity, toxicity, flammability, and environmental impact. For example, a substance with a low boiling point may be more hazardous due to its volatility, while a substance with a high solubility in water may be more easily dispersed in the environment.