Kad god okrenem pljeskavice, koristim hvataljke.

Kad god means whenever or every time that.

• kad = when
• kad god = whenever

So:

• Kad okrenem pljeskavice... = When I flip the burgers/patties...
  This can sound more like a specific occasion or a more limited context.
• Kad god okrenem pljeskavice... = Whenever I flip the burgers/patties...
  This clearly expresses a repeated habit.

The word god adds that idea of any time / every time.

Because the sentence describes a habitual action: something the speaker does regularly.

• okrenem = I flip / I turn
• koristim = I use

In Serbian, the present tense is often used for:

• general truths
• habits
• repeated actions

So Kad god okrenem pljeskavice, koristim hvataljke means Whenever I flip patties, I use tongs, not necessarily that it is happening right now.

This is a question of aspect.

• okrenuti → perfective
• okretati / okretati, okretati? and commonly okretati / okretati as the imperfective pair, while okrećem is the present form of okretati/okretati-related turning meaning
• In everyday use, learners often compare okrenem with okrećem as completed flip vs ongoing turning

Here, okrenem is used because the sentence refers to a completed action each time it happens: each time I flip the patties.

So:

• Kad god okrenem pljeskavice... = Whenever I flip the patties
  Focus on the action being completed on each occasion.
• Kad god okrećem pljeskavice... would sound more like Whenever I am turning / while turning the patties
  This focuses more on the process and is less natural here if you just mean the usual repeated act of flipping them.

So okrenem is the more natural choice in this sentence.

Okrenem is:

• 1st person singular
• present tense
• from the verb okrenuti (to turn / to flip)
• aspect: perfective

The ending -em tells you the subject is I, so okrenem means I flip / I turn in this kind of sentence.

Because Serbian often omits subject pronouns when they are already clear from the verb ending.

• okrenem already means I flip
• koristim already means I use

So ja is not necessary.

You could say:

• Kad god ja okrenem pljeskavice, koristim hvataljke

but that would usually add extra emphasis, something like Whenever I flip them...

The version without ja is more natural and neutral.

Because pljeskavice is the direct object of okrenem, so it is in the accusative plural.

The noun is:

• singular: pljeskavica
• plural: pljeskavice

For many feminine inanimate nouns, the accusative plural looks the same as the nominative plural.

So:

• pljeskavice can mean patties/burgers as a subject
• and also patties/burgers as a direct object

Compare the singular:

• pljeskavica = nominative singular
• pljeskavicu = accusative singular

That contrast is easier to see in the singular than in the plural.

Hvataljke is also a direct object, this time of koristim, so it is in the accusative plural.

The verb koristiti takes the accusative:

• koristim hvataljke = I use tongs

Again, because this is a feminine inanimate plural noun, the accusative plural looks the same as the nominative plural:

• nominative plural: hvataljke
• accusative plural: hvataljke

So the form does not change here.

Yes, very often.

Just like English tongs, Serbian hvataljke is commonly used in the plural for the kitchen tool as a whole.

So:

• hvataljke = tongs

Even though it is one tool, the noun is often plural in normal usage.

Yes, that is grammatical, but it is a bit more formal or bookish.

Compare:

• koristim hvataljke = the most straightforward everyday way to say I use tongs
• koristim se hvataljkama = I make use of / I use tongs, with a slightly more formal feel

The grammar changes too:

• koristiti + accusative → hvataljke
• koristiti se + instrumental → hvataljkama

So both are correct, but koristim hvataljke is the more natural everyday phrasing here.

Yes. The first part, Kad god okrenem pljeskavice, is a subordinate clause, and it is followed by the main clause:

• Kad god okrenem pljeskavice, koristim hvataljke.

In standard Serbian spelling, a subordinate clause like this is normally separated by a comma from the main clause.

Yes. Serbian word order is fairly flexible.

The given sentence is a neutral, natural version:

• Kad god okrenem pljeskavice, koristim hvataljke.

But you could also say:

• Hvataljke koristim kad god okrenem pljeskavice.

That puts more emphasis on hvataljke.

So the original word order is the most neutral one, but other orders are possible if you want different emphasis.

Because Serbian does not have articles like English the and a/an.

So:

• pljeskavice could mean the patties, some patties, or just patties
• hvataljke could mean the tongs or simply tongs

The exact meaning comes from context, not from articles.

That is very normal in Serbian and other Slavic languages.