d. Extensive Property b. 4. What classification of a matter can we classify formaldehyde? c. Acid b. Mixture matter can wo d. Base a. Pure substance ​

Sagot :

Answer:

A. Pure Substance

Explanation:

Formaldehyde, also known as methanol, is a colorless, flammable gas with a strong, pungent smell. It is an organic compound with a chemical formula of CH2O or HCHO, and it is classified as an aldehyde, a type of organic compound containing a formyl group (-CHO).