Memory Interface Issue – Computer Science Stack Exchange

I've learned that the problem of memory connectivity is used when a memory with a smaller number of memory locations needs to be connected to a processor with more address lines.
For example, for connecting memory chips with a net memory of 8 KB to a CPU that can handle 64 KB.

Can someone please explain or explain what that is? Why can not I just connect a chip with a smaller memory size to a CPU with more address lines?