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Date Posted: 08:17:07 07/28/01 Sat
Author: Mr. Yeo Woei Ter
Subject: Practice 1 - Question 15

Seems like a tough question to many!

Remember that reactive metals like sodium and potassium form very stable compounds. Therefore it is very difficult to decompose these compounds using heat alone.

On the other hand, the compounds of less reactive metals like copper or mercury can undergo thermal decomposition easily.

Compounds like sodium carbonate, sodium oxide and potassium carbonate cannot undergo thermal decomposition.

The answer can only be C!

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