What values are considered false?

[Jason]

In my experimentation 0, None, "", [], and () all seem to be
considered false.  Just to confound me none of them are == to each
other.  Coming from a Scheme world this is confusing.  Are there any
other values that are false?  Why aren't () and "" the same thing? 
Don't both describe an immutable sequence of values (basically, why
aren't strings either lists or tuples)?