There are three common functional groups in organic chemistry that are readily ionized by adjusting the ph of the aqueous solution during an extraction. name and write the chemical structure of these three functional groups and show each

The three functional groups are carboxylic acids, amines and phenols. These functional groups can be turn to ions by adjusting their pH during extraction.
Their chemical strictures are as follows:
Carboxylic acid: RCOOH
Amines: RNH2
Phenols: C6H6O.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.