Switching languages

I'm a translator, I type in Russian and frequently check online dictionaries. I just got a laptop with Windows 10 and encountered an unfamiliar problem. When I switch between Word (really old version) and Chrome, the input language doesn't change into English. I never had this problem in Win 7 or XP. I want to type in Word in Russian and search the Inteet in English as default. How can I achieve that?