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Subject:

also known as sodium hydrogen carbonate. It is a crystalline white solid that usually appears as...

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(also called caustic soda) a white solid, available in pellets, flakes or granules, with the...

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the soft 'roof' of the back of the mouth.

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the energy emitted (given off) by the sun.

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a substance, usually a liquid, in which other substances can dissolve.

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