The plural form of liquid is liquids.
Synthesis is the singular form, syntheses is the plural form, and syntheses' is the plural possessive form.
There is no such plural
The plural form of the noun laboratory is laboratories.The plural possessive form is laboratories'.
The plural form for the singular noun chemist is chemists.
The plural form of the noun synthesis is syntheses.The plural possessive form is syntheses'.
Nitroglycerin doesn't really have a plural, since it is a liquid.
There is no plural form. Do and Do not are verbs
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "is" is "are."
The plural form of "was" is "were."
The plural form of "I" is "we."
"Groceries" is the plural form of "grocery."
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
The plural form of mouth is mouths. The plural form of month is months. The Mounth is a range of hills in Scotland and does not have a plural form.
The noun glasses (meaning spectacles) is a singular form, a shortened form of 'a pair of glasses'. The plural form for glasses is 'pairs of glasses'. If it means "vessels to hold liquid" then it is already plural, "glasses." Other examples of singular nouns that are a short form for 'a pair of...' are pants, shorts, drawers, jeans, scissors, shears, pliers, and binoculars.
The plural form of the demonstrative pronoun 'that' is those.