Does teeth whitening chemicals make our teeth brittle?

I just came from a dentist for teeth whitening treatment 2 weeks ago, when accidentally I bit a chicken bone and my tooth cracked easily.
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I'm just going to answer the bolded question, because the description, i'm not really sure, so i have no right to say anything; Teeth whitening chemicals do make your teeth brittle, yes. But other foods on the other hand sometimes also make your teeth brittle/rough like coke(when you scratch your teeth it has a sqeaky sound). I'm not sure, but go back to your dentist and ask why your tooth cracked easily, she might know. :)
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