"This apartment is small and not expensive."
Translation:Ця квартира маленька і не дорога.
це is either a neuter adjective pronoun (це молоко - this milk) or a demonstrative pronoun for all genders (це кіт - it's a cat)
No, but "this" is.
When you need to put "to be" after "this" use "це" (or if English sentence uses "it's"): It's a cat - це кіт, this is me - це я, these are girls - це дівчата.
If "this" is an adjective, use цей/ця/це/ці: this cat - цей кіт, this girl - ці дівчина, these books - ці книжки (These books are very interesting)
Це молоко дороге. (This milk is expensive) Це дороге молоко. (This is expensive milk)
Ця квартира дорога. (This apartment is expensive) Це дорога квартира (This is an expensive apartment).
Це simply happens to be an overlap between the meaning of "this is..." or "it is..." (це...) and "this" (цей/ця/це)