1. that mass
2. a particle that has the same properties at every point
They can be classified as metals.
A specific combination of bonded atoms which always react in the same way, regardless of the particular carbon skeleton is known as the functional group. These are specific groups of atoms or bonds within organic molecules that accounts for the characteristic chemical reactions of those molecules. Examples of functional groups are the Carbonyl group, alkyl Halides, aldehydes and ketones among others.
Answer:
virtual
Explanation:
because we cannot touch or sense it
