Google Chrome can work with tabs, that is, in one window, you can open several web pages at once. You can close a separate tab, window, program, or force terminate it (but this method is best left as a last resort).
Steps
Method 1 of 7: How to close tabs on an Android and iOS device

Step 1. Click the display tabs button
This button has the form of a number (which is equal to the number of open tabs) inside a square and is located in the upper right corner of the screen between the search bar and the menu button.
- The Chrome mobile app doesn't support multiple windows, but it can work with tabs.
- You can work the same way on a tabbed tablet as on a computer, so this mobile device does not have a tab display button.

Step 2. Click on the "x" icon in the upper right corner of the tab to close it

Step 3. Close all tabs at once
To do this, open the "Settings" menu (an icon in the form of three dots that are located horizontally) and select "Close all tabs".

Step 4. Close the "incognito" tab (Android only)
If you turn off the screen (power button) while the incognito tab is open and then turn it on, the message “Close incognito tabs” is displayed. Double click on this message; all incognito tabs will be closed.
Keep in mind that incognito tabs can be closed in the same way as regular tabs
Method 2 of 7: How to close the Chrome app on an Android device

Step 1. Press the button to display the applications that were recently opened
As a rule, this button is located in the lower right corner of the screen and looks like intersecting squares (the appearance of the button depends on the phone / tablet model). When you click on this button, a list of applications that you have recently used will open.

Step 2. Scroll up or down the list to find the Chrome app

Step 3. Swipe across the Chrome app from left to right
This will close this application, which means it will not run in the background.
You can also click on the "x" button. It's in the top-right corner of the Chrome window in the list of recently opened apps (only if your device is running Android 6 or later)
Method 3 of 7: How to Force Quit the Chrome App on an Android Device

Step 1. Open the Settings app
Its icon looks like a gear. The phone settings will open.

Step 2. Click on "Applications"
It's under the Device section. A list of applications that are installed on the device will open.

Step 3. Click "Chrome"
The applications are listed alphabetically.

Step 4. Click Stop
This will end the process associated with the Chrome app.
Use this method if the application is stuck (not responding) or is not performing well
Method 4 of 7: How to close the Chrome app on an iOS device

Step 1. Press the Home button twice
A list of applications that you have recently used will open.

Step 2. Scroll left or right to find the Chrome app

Step 3. Swipe up from the bottom of the Chrome app
This will close this application, which means it will not run in the background.
Method 5 of 7: How to Force Quit the Chrome App on an iOS Device

Step 1. Double-click the Home button and select Chrome from the list of applications you recently used
Use this method if the application is stuck or does not work well.

Step 2. Press and hold the power button
After a few seconds, the Disable slider appears.

Step 3. Press and hold the Home button
All active applications will be forcibly closed, and you will be taken to the home screen.
Method 6 of 7: How to close tabs, windows, Chrome processes on the computer

Step 1. Click the "x" icon on the tab
This icon is located on the right side of each tab and only closes the selected tab.
- To close the active tab using keyboard shortcuts, press Ctrl + W (Windows and Linux) or ⌘ Cmd + W (Mac OS X).
- To close all tabs of the active window at once, press Ctrl + ⇧ Shift + W / ⌘ Cmd + ⇧ Shift + W

Step 2. Click on the "X" in the corner of the window
On Windows, this icon is in the upper right corner of the window and closes Chrome (unless a second browser window is open). On Mac OS X, the X is in the upper left corner and closes the window, but not the process associated with Chrome.
To open multiple windows at once, press Ctrl + N / ⌘ Cmd + N or drag the tabs outside the tab bar. Each window supports multiple tabs

Step 3. Click on the "≡" icon and select "Exit" from the menu
This icon is located in the upper right corner of the window. This will close all windows and tabs and complete the process.
- On Windows, you can use the keyboard shortcuts Ctrl + ⇧ Shift + Q or Alt + F4 + Q.
- On Mac OS X, press ⌘ Cmd + Q.
Method 7 of 7: How to Force Quit Chrome on Computer

Step 1. Open the Task Manager
Press Ctrl + Alt + Del (Windows) or ⌘ Cmd + ⌥ Option + Esc (Mac OS X). If the browser is frozen, use this keyboard shortcut to open a list of all running processes.

Step 2. In the list of active processes, select "Google Chrome"

Step 3. Complete the process
Click End Process (Windows) or Close (Mac OS X). This button is located in the lower right corner of the Task Manager window.