For the balance due on the purchase of a tractor Henry Brown executed and delivered to Jane Jones his promissory note containing the following language:
January 1, 2011, I promise to pay to the order of Jane Jones the sum of $7,000 to be paid only out of my checking account at the XYZ National Bank in Pinckard, Illinois, in two installments of $3,500 each, payable on May 1, 2011, and on July 1, 2011, provided that if I fail to pay the first installment on the due date, the entire sum shall become immediately due.
Is the note negotiable? Explain.