Grickalice su na stolu.

Grickalice is the nominative plural form, because it is the subject of the sentence.

• Singular: grickalica = a snack
• Plural: grickalice = snacks

In Grickalice su na stolu, the sentence is about the snacks, so Serbian uses the nominative plural.

Su is the 3rd person plural present tense of biti = to be.

So:

• ja sam = I am
• ti si = you are
• on/ona/ono je = he/she/it is
• mi smo = we are
• vi ste = you are
• oni/one/ona su = they are

Because grickalice is plural, Serbian uses su = are.

In standard Serbian, no. In this sentence, su is needed.

Serbian often drops subject pronouns such as oni or one, but the verb to be itself is still required here. So:

• Grickalice su na stolu. = correct
• Grickalice na stolu. = not a normal full standard sentence for this meaning

Na is used because the snacks are on the table, meaning on the surface.

Compare:

• na stolu = on the table
• u stolu = in the table / inside the table

So Serbian, like English, distinguishes between on and in here.

Because after na in the meaning of location, Serbian uses the locative case.

The noun is:

• sto = table, desk

But in the locative singular, it becomes:

• na stolu = on the table

So sto changes form because Serbian nouns change by case.

Stolu is locative singular.

In this sentence:

• na
  • locative = location where something is

So na stolu means on the table in the sense of being there, not moving there.

Then Serbian would normally use na with the accusative, not the locative.

Compare:

• Grickalice su na stolu. = The snacks are on the table.
  
  • location
  • na + locative
• Stavljam grickalice na sto. = I am putting the snacks onto the table.
  
  • movement toward a surface
  • na + accusative

So:

• na stolu = on the table
• na sto = onto the table

Yes. Serbian word order is more flexible than English.

You can also say:

• Na stolu su grickalice.

This often sounds natural too, especially if you want to emphasize where they are.

However, the little verb su is a clitic, so it usually goes in second position in the sentence or clause. That is why you get:

• Grickalice su na stolu.
• Na stolu su grickalice.

and not usually:

• Na stolu grickalice su.

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

So Grickalice su na stolu can mean:

• The snacks are on the table
• Snacks are on the table

The exact interpretation depends on context.

Yes, very often it can, depending on context.

Serbian does not always use a special structure matching English there is / there are. A sentence like Grickalice su na stolu can function naturally in that role.

That said, Serbian also has another common way to express existence:

• Na stolu ima grickalica. = There are some snacks on the table.

That version is a little different grammatically, but for a learner it is useful to know that both patterns exist.

The singular is grickalica.

So:

• grickalica = a snack
• grickalice = snacks

In everyday use, the plural grickalice is very common when talking about snack food in general.

A rough pronunciation guide is:

gri-tska-lee-tse soo na sto-loo

A few helpful points:

• c in Serbian is pronounced like ts
• u is always like oo in food
• o is a clear o, not a diphthong
• Serbian spelling is very phonetic, so words are usually pronounced much as they are written

So:

• grickalice ≈ gri-tska-lee-tse
• su ≈ soo
• na ≈ nah
• stolu ≈ sto-loo