No. 5,485 in Polish
tlenku
The Polish word "tlenku" means "oxide" in English.
In a sentence
W chemii uczymy się o różnych rodzajach tlenków.
In chemistry, we learn about different types of oxides.
Here, 'tlenków' is the plural genitive case of 'tlenek', referring to various types of oxides in chemistry.
Tlenek azotu jest gazem bardzo reaktywnym.
Nitrogen oxide is a very reactive gas.
In this sentence, 'tlenek' is in the nominative case singular form of 'tlenek', used to name the compound.
Narodowe laboratorium bada właściwości tlenków metali.
The national laboratory studies the properties of metal oxides.
Here, 'tlenków' is in the genitive plural case of 'tlenek', modifying 'metali' to express the study subject.
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