Mendeleev is generally credited with inventing the [переодическая] Table of the elements.

Hint: The answer should be capitalized! (det inte rätt in rysska att använda begynnelsebokstav i ordet ”переодическая система” or ”переодическая таблица”. Hur behöver jag att skriva?

Periodic

Please read [главы] 4 to 6 by Friday.

chapters Chapters

Info: The word is often capitalized when referring to a specific work.

The police only have some [косвенных] evidence to go on, so they’re treating the affair very cautiously.

Hint: An adjective is needed, to specify the type of evidence.

circumstantial

There were at least three [критерия] they used to select the winner.

Hint: Note the unusual singular and plural forms!

criteria

Info: One criterion, two criteria.