Will chalk paint adhere to formica?

I have a small bathroom on the first floor with an old, unattractive, single-sink formica countertop. This bathroom doesn't see a lot of use, so I'm not worried about lots of water damage, etc. I'm planning on painting the wood cabinet with chalk paint, but I was hoping chalk paint would work on formica if I sanded the surface first. Also, would it be better to put a few coats of poly or can you only use wax with chalk paint?
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