La bebida está fría.

Because bebida is a feminine singular noun, so it takes the feminine singular article la.

A very common pattern is:

• el
  • masculine singular noun
• la
  • feminine singular noun

Examples:

• el café
• la bebida

The ending -a often suggests a noun is feminine, and bebida follows that pattern.

Because Spanish normally uses estar for a state or condition, and temperature is treated as a condition.

So:

• La bebida está fría = the drink is cold right now

Using ser here would sound odd in most normal situations. Ser is usually for identity, origin, characteristics, and other more permanent or defining ideas.

A learner shortcut that works well here:

• estar for how something is at the moment
• ser for what something is

Since being cold is a temporary condition, está is the natural choice.

Because adjectives in Spanish usually agree with the noun they describe.

Since bebida is:

• feminine
• singular

the adjective must also be:

• feminine
• singular

So:

• masculine singular: frío
• feminine singular: fría
• masculine plural: fríos
• feminine plural: frías

Examples:

• El café está frío
• La bebida está fría
• Las bebidas están frías

The accent mark shows how the word is pronounced.

In fría, the í is stressed, and the word is pronounced as frí-a, with two syllables, not as one merged sound.

So it sounds roughly like:

• FREE-ah

This is why the written accent is important. It tells you the stress and helps show that the vowels are pronounced separately.

Because in Spanish, descriptive adjectives often come after the noun.

So:

• la bebida fría = the cold drink

This is the normal position for many everyday adjectives, especially when you are simply describing something.

English often puts adjectives before the noun:

• the cold drink

Spanish often puts them after:

• la bebida fría

In your sentence, though, fría comes after está because it is part of the predicate:

• La bebida está fría = the drink is cold

Normally, no.

In standard Spanish, countable singular nouns usually need an article or another determiner. So bebida by itself would sound incomplete in a normal sentence.

Natural versions are:

• La bebida está fría = the drink is cold
• Una bebida está fría = a drink is cold

Leaving out the article might happen in very special styles such as headlines or notes, but not in ordinary speech.

Yes, bebida is correct and natural, and it means drink or beverage in a general sense.

That said, in everyday conversation people often use a more specific word if they know what the drink is, for example:

• el agua
• el café
• la cerveza
• el refresco

So La bebida está fría is perfectly good Spanish, but in real life a speaker might often say something more specific if the context allows it.

A Spain pronunciation would be approximately:

la beh-BEE-tha es-TA FREE-ah

A few helpful points:

• bebida sounds roughly like beh-BEE-tha in much of Spain
• está is stressed on the second syllable: es-TA
• fría has two syllables: FREE-ah

A more phonetic version is:

• la be-BEE-da es-TA FREE-a in a broad learner-friendly spelling
• In much of Spain, the d in bebida is often softer than an English d

You change the article, the verb, and the adjective so they all agree:

• La bebida está fría = the drink is cold
• Las bebidas están frías = the drinks are cold

What changes:

• la → las
• está → están
• fría → frías

This is a very important Spanish pattern: articles, nouns, and adjectives must match in number, and adjectives also match in gender.

Yes, grammatically you can.

The difference is:

• La bebida está fría = the drink is cold
• Una bebida está fría = a drink is cold

So the choice depends on whether you mean:

• a specific drink already known in the conversation → la
• any one drink / an unspecified drink → una

In many real situations, la bebida is more likely if both speakers already know which drink is being talked about.