Aalia T. answered 16d
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- The odor of glass cleaning solution – This is a physical property because the smell can be detected without changing the chemical composition of the cleaning solution. Observing odor does not create a new substance.
- The color of chlorine gas – This is a physical property since color is an observable characteristic that does not involve any chemical change. Chlorine remains chemical chlorine gas regardless of its color observation.
- The electrical conductivity of copper wire – This is a physical property because copper's ability to conduct electricity is inherent and does not alter its chemical identity. Measuring conductivity does not produce a new substance.
- The ability of milk to sour – This is a chemical property. Souring occurs due to a chemical reaction where bacteria convert lactose into lactic acid, forming new compounds. This involves a chemical change, not just physical observation.
- A compound does not react with bromine – This is a chemical property because reactivity (or lack thereof) with another chemical substance describes the substance's ability to undergo chemical change. Whether the compound reacts or does not react, the assessment involves potential chemical transformation.