pheromone
Pungent odor is a physical change because it only affects the sense of smell without altering the chemical composition of the substance emitting the odor.
Partly but it is also a chemical property.
This is a chemical reaction.
Odor is a chemical property.
benzyl isocyanate
it is a chemical component which gives bad odor
AnswerNeither. Odor is not a change at all. Odor is airborne molecules that have a particular smell. A change is a process and odor is not a process. The things which cause odors can be either physical or chemical. For instance, the body odor is caused by chemical changes, but if you open jar of a smelly chemical, that is a physical change (some of the molecules of the chemical are evaporating and are thus airborne).When talking about mixing chemicals and substances, a change in odor is a chemical change.(I assume this is what you meant when you asked is odor a chemical or physical change)
Some defense systems that plants use include; bad odor, signal response, chemical release and electrophysiology.
Odor results from chemical reactions. Sensors in your nostrils bind with specific compounds in the air to detect scents. But this is not to be confused with the fact that odor is a physical property.
Pungent odor is a physical change because it only affects the sense of smell without altering the chemical composition of the substance emitting the odor.
Odor is by many considered as chemical interaction with nasal odor receptors, though this is still under dispute.I, personally, would be more of the 'physical' odor perception, because the odor-creating molecules (eg. in perfume) do not change at all while being 'percepted' in your nose.However there are also undoubtly pure chemical odor perceptions, like those of (gaseous) 'acids', 'ammonia', 'formalin' and hydrogen sulfide.
Promethium itself does not have an odor as it is a radioactive metallic chemical element. However, compounds containing promethium may have their own distinct odors depending on their chemical nature.
The most important sign is when you smell an odor . when you began to smell and odor that is a automatic chemical change.
Skunks.
skunk
This is a chemical reaction.
Odor is a chemical property.