Das Heim ist ruhig.

Because Heim is a neuter noun in German, so its nominative singular article is das.

• das Heim = the home / the residence

You have to learn the grammatical gender of each noun along with the noun itself.

Heim is a noun, which is why it is capitalized.

In German, all nouns are capitalized, not just at the beginning of a sentence. So Heim gets a capital H even in the middle of a sentence.

Not exactly.

• Heim often means home, residence, or sometimes a place like a children’s home, nursing home, or hostel-like institution
• Haus means house: the physical building

So Heim is more about a place of living or belonging, while Haus is the building itself.

A native speaker might not always use Heim for a personal home in everyday conversation. Often, Zuhause is more natural for that idea.

Because German main clauses usually follow the verb-second rule.

In Das Heim ist ruhig:

• Das Heim = subject
• ist = verb
• ruhig = complement

So the structure is:

Subject + verb + rest

This is very similar to English here: The home is quiet.

Ist is the 3rd person singular form of the verb sein (to be).

The subject is das Heim, which is singular, so German uses:

• ich bin
• du bist
• er/sie/es ist

Since Heim is a singular neuter noun, it takes ist.

Ruhig is an adjective here. It describes the subject das Heim.

After the verb sein, German uses the adjective in its basic form:

• Das Heim ist ruhig.
• Das Haus ist groß.
• Der Raum ist sauber.

So ruhig does not get an ending here.

Because it comes after sein and is used as a predicate adjective.

Compare:

• ein ruhiges Heim = a quiet home
  → adjective before the noun, so it takes an ending
• Das Heim ist ruhig = the home is quiet
  → adjective after ist, so no ending

This is a very common pattern in German.

Here it is best understood as an adjective.

It describes what the home is like, not how an action is done. Because it follows sein, it functions as a predicate adjective.

German often uses the same basic word form for both adjectives and adverbs, so the form ruhig itself does not change.

Ruhig can mean several related things depending on context:

• quiet
• calm
• peaceful
• still

So Das Heim ist ruhig could suggest that the place is not noisy, or that it feels calm and peaceful.

It is in the nominative case because it is the subject of the sentence.

You can identify it by asking: What is quiet?
Answer: das Heim

That makes das Heim the subject, so it is nominative.

Grammatically, yes. It is fully correct.

But whether it sounds natural depends on context. Heim can sound a bit formal, literary, or institutional depending on what you mean. If you mean home in the personal sense, German often prefers something like:

• Zu Hause ist es ruhig. = It’s quiet at home.
• Das Haus ist ruhig. = The house is quiet.

So the sentence is correct, but Heim is not always the most everyday choice.

Usually ruhig is the more natural choice here.

• ruhig describes a place as calm or quiet
• leise usually means quiet/soft in the sense of sound volume

So:

• Das Heim ist ruhig. = The home is quiet/calm.
• Die Musik ist leise. = The music is quiet/soft.

For a place, ruhig is generally better.

A simple pronunciation guide is:

dahs HIME ist ROO-ikh

A bit more precisely:

• das → like dahs
• Heim → rhymes roughly with English time
• ist → like ist
• ruhig → often roughly ROO-ikh or ROO-ig, depending on accent

The h in Heim is not strongly pronounced by itself; it mainly affects the vowel. The eu/ei-type sound in Heim is important: it sounds like English eye.

Yes, but the normal neutral order is:

Das Heim ist ruhig.

You could also say:

Ruhig ist das Heim.

That is grammatically possible, but it sounds more marked or poetic, because it emphasizes ruhig. In ordinary speech, the first version is much more common.