state the three observation which helps to determine wheather a chemical reaction as taken place write an activity which may justify atleast two of the listed observation

state the three observation which helps to determine wheather a chemic

1.	state the three observation which helps to determine wheather a chemical reaction as taken place write an activity which may justify atleast two of the listed observation
Answer» The following can indicate that a chemical change has taken place, although this evidence is not conclusive: Change of odor. Change of COLOR (for EXAMPLE, SILVER to reddish-brown when iron rusts). Change in temperature or energy, such as the production (exothermic) or LOSS (ENDOTHERMIC) of heat.

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state the three observation which helps to determine wheather a chemical reaction as taken place write an activity which may justify atleast two of the listed observation​

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state the three observation which helps to determine wheather a chemical reaction as taken place write an activity which may justify atleast two of the listed observation