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1. Identify the changes involved in the following processes as physical or chemical changes.(b) Burning of Liquefied Petroleum Gas (LPG).
The burning of liquefaction of petroleum gas causes a change that results in the formation of new products such as .
2. During the reaction of some metals with dilute hydrochloric acid, following observations were made.
Explain these observation giving suitable reason.
(b) The temperature of the reaction mixture rises when aluminium (\(Al\)) is added.
(b) The temperature of the reaction mixture rises when aluminium (\(Al\)) is added.
Aluminium with hydrochloric acid has an reaction. As a result, the reaction mixture's temperature .
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