Die yspak is in die vrieskas.

Because die is the Afrikaans definite article, equivalent to English the.

In this sentence:

• die yspak = the ice pack
• die vrieskas = the freezer

So Afrikaans uses die before both nouns because both are definite.

No. Modern Afrikaans does not use different definite articles for grammatical gender the way some other languages do.

So:

• die man = the man
• die vrou = the woman
• die kind = the child

That makes Afrikaans simpler for English speakers: you do not have to memorize noun genders for the article.

Afrikaans often writes compound nouns as a single word.

So yspak is made from:

• ys = ice
• pak = pack

Together they form one noun: yspak.

This is very common in Afrikaans, so English two-word expressions often become one word.

Yes. vrieskas is another compound noun.

It is made from:

• vries = freeze
• kas = cupboard / cabinet

So the literal idea is something like a freezing cabinet, which is the normal Afrikaans word for freezer.

Yes, in this simple sentence the structure is very similar to English:

• Die yspak = subject
• is = verb
• in die vrieskas = prepositional phrase showing location

So the pattern is:

subject + verb + place

That is why this sentence feels very familiar to an English speaker.

Yes, very much so. Here in means physical location inside something.

So:

• in die vrieskas = in the freezer

This is one of the easier Afrikaans prepositions for English speakers because it often matches English directly.

Yes, you could.

• is gives a basic, neutral statement of location.
• lê literally means lies and is often used when something is resting somewhere.

So:

• Die yspak is in die vrieskas = neutral statement
• Die yspak lê in die vrieskas = slightly more physical, as if the ice pack is lying there

For a learner, is is perfectly good and easy to use.

A simple learner-friendly approximation is:

• die ≈ dee
• vrieskas ≈ FREES-kahs
• yspak starts with the Afrikaans y sound, which does not match English exactly

For yspak, many beginners use an approximation somewhere between ice-pack and ace-pack. That is not perfect, but it is a reasonable starting point.

No. For a/an, Afrikaans uses 'n.

So:

• 'n yspak = an ice pack

A natural sentence would be:

'n yspak is in die vrieskas.

If you are introducing it for the first time, Afrikaans often prefers:

Daar is 'n yspak in die vrieskas.

That means There is an ice pack in the freezer.

No. Unlike German, Afrikaans does not capitalize all nouns.

So in this sentence:

• yspak is lowercase
• vrieskas is lowercase

Only the first word of the sentence, Die, is capitalized because it begins the sentence.