Why is my iPad keyboard small

You can pinch it together or flick it apart with two fingers...or...hold the key board button down (the lower right key) and a balloon will pop up with "Dock" (puts key board at bottom of screen) and "Split" or "Merge" as the case my be.

You can move the key board by holding the button and sliding the key board up/down and then Dock it with same.

Go to the Support Section and download and read the manual and you will learn all kinds of neat things.

You pulled it apart.

Push it back together.

You can do it in 3 ways

1. Drag keyboard toward each other

2. Hold the keyboard button down for a second or two to merge

3. Settings>General>Keyboard>Split Keyboard>Off.