Answer:
Endothermic
Explanation:
The temperature of the water decreased.
The water lost heat.
The heat must have gone into getting the KNO₃ into solution.
So, the dissolving of KNO₃ in water is endothermic.
Ion is an atom or molecule with a net electric charge due to loss or gain of one or more electrons.
Answer:
At the top of Group 11 above silver and gold.
Period 4
Explanation:
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