What if it was not chemistry? let's say it was "medical professions". Should I use interests then?Chemistry is single, and interest in a single subject is uncountable, so use 'interest'.
Here is another example that I have "These educational opportunities foster the interest/interests of high school students in research careers".Chemistry is single, and interest in a single subject is uncountable, so use 'interest'.
What's the best way to paraphrase this then? Can I say something like promoted/cultivated the interest of ...It needs to be interest. Note that “to foster an interest” is rarely used in everyday English.
Thank you.Cultivate or encourage would be more common.