Chrome splits every tab, plugin and extension into its own process. This leads to higher RAM usage since it has to duplicate some tasks for every tab.
Why is Chrome such a resource hog?
Adding to the amount of RAM usage in Chrome are plugins and extensions. Each plugin or extension you add to Google Chrome requires resources to run. The more extensions you have installed, the more RAM Chrome needs to run.
Why is Chrome so heavy on memory?
Chrome runs each tab as a separate new process. This is to make sure that you get a fast browsing experience along with high stability. So when you have multiple open tabs running in your browser, more processes need to be executed. This results in Chrome taking up a lot of memory.