A student carried out two experiments.
experiment 1 The student heated a sample of limestone very strongly. A white powder formed.
experiment 2 The white powder from experiment 1 was cooled. The student then added a small quantity of cold water to the powder. Large quantities of steam were produced.
Which statement is not correct?
1 )
An endothermic reaction occurred in experiment 1.
2 )
An exothermic reaction occurred in experiment 2.
3 )
Thermal decomposition occurred in experiment 1.
Thermal decomposition occurred in experiment 2.
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