Yes. He still owns it.
Most do.
Of course. As long as they're still in that house and still living there, rent should be paid.
You can go back but you cannot enter the property without permission from the landlord. If you mean if you can rent it again, most landlords will not rent to you again, but it never hurts to ask.
No.
yes you still have to pay rent.
Most landlords won't, and they certainly don't have to.
Rent account or landlords account
That's called "landlords not doing background checks." There are several agencies that keep records of tenant's histories.
When you rent an apartment, landlords usually ask for a security deposit equal to a month's rent. Renters can potentially cause all sorts of problems for landlords, they can damage the property that they rent, they can refuse to pay their rent, etc. This way landlords have at least some ability to penalize a tenant who causes these kinds of problems, by refusing to return the security deposit (in part or in full).
Of course.
Yes.
Yes.