Questions & Answers about Vad är det som skapar kemin mellan dem?
Why use Vad är det som instead of simply asking Vad skapar kemin?
Can we drop the word som here and just say Vad är det skapar?
No, som is absolutely mandatory here. In a cleft sentence, when the question word acts as the subject of the main verb (in this case, asking what does the creating), you must use som to link the clauses together.
Does Swedish use the word kemi for emotional connections just like English does?
Yes! The word kemi literally means chemistry in the scientific sense, but it is widely used in Swedish to describe the interpersonal spark or connection between people. We use the definite form kemin here because we are talking about the specific chemistry between these particular individuals.
How should I pronounce the word dem in everyday conversation?
Although it is written as dem because it is the object of the preposition mellan, in almost all spoken Swedish you will hear native speakers pronounce it as dom.