Qué, cuál, and cuánto are Spanish interrogative adjectives. An adjective is a word that modifies a noun, and interrogative means questioning, so interrogative adjectives are adjectives used to ask the questions "what," "which," and how "much/many."
The Spanish negative adjective negates, refuses, or casts doubt on the existence of the noun that it modifies. There is only one negative adjective in Spanish: no … ninguno, meaning "no" or "not any."
Possessive adjectives are the words used in place of articles to indicate to whom or to what something belongs. Their usage is similar to English, but there are some differences in form.
The long or stressed form of Spanish possessive adjectives follow the noun and stress the ownership rather that the thing owned.
There are several Spanish adjectives that have a shortened form when they precede certain nouns.
Todo is a very common and versatile word in Spanish. It can be used as an adjective or as a pronoun.