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Tooth decay begins at the pH of :
Tooth enamel is one of the hardest substances in our body. How does it undergo damage due to eating chocolates and sweets? What should we do to prevent it?
(a) Sometimes the pH of our mouth gets lower than 5·5. Why ? (b) A basic salt 'X' is obtained by heating baking soda followed by crystallisation. Identify 'X' and state its two industrial uses. (c) Why do copper sulphate crystals turn white on heating ?
Sugar free chewing gum have baking soda as one of their key ingredients and are considered to be good to keep teeth healthy. What is likely to be the function of baking soda in the chewing gum?
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