AT28C16 Interface Help
The unit K in computer means 1024 bits. So 16K is 16*1024 or 16384 bits. The datasheet says,


  The AT28C16 is a 16K memory
  organized as 2,048 words by 8 bits.


And since it has got 2^11 (or 2K) address lines, each of which will point to one of these words. 

You can determine which word you want to write data in or read from by setting appropriate bits in A0-A10.