* Physical Properties: These are characteristics that can be observed or measured without changing the chemical composition of the substance. Examples include color, texture, melting point, and density.
* Chemical Properties: These describe how a substance reacts with other substances or changes its composition. Examples include flammability, reactivity with acids, and odor.
The pungent odor of vinegar is caused by the presence of acetic acid, a chemical compound. The odor is the result of the interaction between the acetic acid molecules and our sense of smell, a chemical process.
