Chcę ukryć kartę.

Chcę means I want.

Its dictionary form is chcieć = to want.

So:

• chcieć = to want
• chcę = I want

This is the 1st person singular form, so the subject is I.

Polish usually does not need a subject pronoun if the verb already shows who is doing the action.

In chcę, the ending already tells you it means I want, so ja is normally omitted.

• Chcę ukryć kartę. = I want to hide the card.
• Ja chcę ukryć kartę. = I want to hide the card.

The version with ja is possible, but it sounds more emphatic, like I want to hide the card.

After chcieć (to want), Polish normally uses another verb in the infinitive.

So the pattern is:

• chcę + infinitive
• I want + to + verb

Examples:

• Chcę spać. = I want to sleep.
• Chcę iść. = I want to go.
• Chcę ukryć kartę. = I want to hide the card.

So ukryć is in the basic to hide form because it depends on chcę.

This is an aspect question.

• ukryć is perfective
• ukrywać is imperfective

In simple terms:

• ukryć focuses on the action as a completed whole
• ukrywać focuses on the action as ongoing, repeated, or not viewed as completed

So:

• Chcę ukryć kartę. = I want to hide the card.
  This sounds like one complete act: get the card hidden.

• Chcę ukrywać kartę. = I want to be hiding the card / keep hiding the card.
  This is less natural in many contexts unless you really mean repeated or ongoing hiding.

In this sentence, ukryć is the normal choice.

Because karta is the direct object of the verb, and in Polish that usually means the accusative case.

The noun karta is feminine, so:

• karta = nominative singular
• kartę = accusative singular

Compare:

• To jest karta. = This is a card.
  Here karta is the subject, so nominative.

• Mam kartę. = I have a card.
• Chcę ukryć kartę. = I want to hide the card.
  Here kartę is the object, so accusative.

A very common clue is the ending -a in the dictionary form.

Most Polish nouns ending in -a are feminine, including karta.

Because it is feminine singular:

• nominative: karta
• accusative: kartę

This pattern is very common:

• książka → książkę
• herbata → herbatę
• karta → kartę

Chcę can be tricky for English speakers because of both the consonant cluster and the nasal vowel.

A rough guide:

• ch sounds like Polish h in modern pronunciation
• the chc cluster is pronounced closely together
• ę is a nasal vowel, but in normal speech its pronunciation depends on context

A practical approximation for learners is something like:

• h-tsen or hts-ehn

But natural pronunciation can vary a bit.

The important thing is:

• do not pronounce ch like English ch in chair
• do not pronounce ę exactly like plain English e

If you want a simpler learner version at first, saying something close to htsen is a reasonable start.

A rough pronunciation guide is:

• u like oo in boot
• kryć is tricky, especially y and ć

Very roughly:

• oo-krić is not perfect, but it may help as a first step

More specifically:

• y is not the same as English ee
• ć is a soft sound, somewhat like a very soft ch sound

Stress in Polish is usually on the second-to-last syllable, so:

• U-kryć

The stress falls on u.

Karta can mean card, but the exact meaning depends on context.

Possible meanings include:

• a playing card
• a bank card / credit card
• a card in a system or game
• sometimes other kinds of card-like document

So Chcę ukryć kartę could mean different things depending on the situation, but grammatically the sentence stays the same.

No, Polish word order is more flexible than English word order.

Chcę ukryć kartę is the most neutral and natural order.

But other orders are possible for emphasis, for example:

• Kartę chcę ukryć. = It is the card that I want to hide.
• Ukryć chcę kartę. = I want to hide the card.
  This sounds marked or poetic in many contexts.

So the standard version for learners is definitely:

• Chcę ukryć kartę.

Yes. Schować is a very common alternative and often sounds very natural in everyday speech.

Both can mean to hide, but there can be slight differences depending on context:

• ukryć = to conceal, hide
• schować = to put away, hide, tuck away

In many everyday situations, both work.

For example:

• Chcę ukryć kartę.
• Chcę schować kartę.

Both can be translated as I want to hide the card, though schować may sometimes feel a bit more like put away out of sight.

Here is the sentence broken down:

• Chcę

  • verb
  • 1st person singular, present tense
  • from chcieć
  • means I want

• ukryć

  • infinitive
  • perfective verb
  • means to hide

• kartę

  • noun
  • accusative singular
  • from karta
  • means card / the card as the direct object

So literally the structure is:

• I want + to hide + the card

No. Polish does not have articles like English a/an/the.

So kartę can mean:

• a card
• the card

Which one is meant depends on context.

That means:

• Chcę ukryć kartę. can be understood as either
  I want to hide a card or
  I want to hide the card

Usually the surrounding situation makes it clear.