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03-01-2016
Chemistry

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11 Which substance can not be broken down by a chemical change?
(1) ammonia (3) ethane
(2) arsenic (4) propanal

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Megan170398 Megan170398

03-01-2016

(2) Arsenic. It is an element and elements are chemically the simplest units and cannot be broken down by any chemical change.

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