I'm assuming you're still talking about 1/2 level stuff here: My teacher has told us not to memorise 'anode is negative, cathode is positive' as that is not always the case in some other kind of reaction we do in Unit 3/4.
Instead, he's told us the definition "the source of the electrons is always negative."
Going by this, the anode is the source, as this is where oxidation occurs - i.e. where the electrons are 'lost' and then travel to the cathode (where reduction occurs).
That occurs at the anode to produce excess +2 ions. Shouldn't the polarity be (+) - isn't this why anions flow from the salt bridge to the anode to counter the build up of + charge?
Edit: sorry didn't notice there was another page.
The way I understand it is after the anode loses the electrons, it gains a positive charge. The anions from the salt bridge flow to neturalise this charge. The charge is no longer positive in the anion after it is neturalised (so the polarity wouldn't be +). It can then proceed to lose more electrons (source of electrons is negative blah blah blah) and thus the reaction continues? I presume all this would happen very quickly.
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