Looks like your issue is solved, but for those that may still have this issue:
It is almost impossible to chip laminate/formica from a particle board top. However, the glue easily releases with the application of heat. You can usually use an iron or heat gun to release the glue and remove the old top in one sheet. Start in a corner, and keep raising the sheet as you heat and pull upward. You can find replacement Formica (or other brands) at HD or Lowes. However, I'm not sure if they will sell you a piece small enough for the table top. Most of the tops I've seen use a wood trim on the edges. You will need to carefully remove this before gluing down the top. Using contact cement glue down the top. You will need a trimmer bit for your router (you do have a router, don't you?) to trim the sheet to the edge of the top. Reapply the edge trim.
