Answer: for the table
First row: 2
Second row: 3
Third row: 3
4. The temperature went up, by 8 degrees
5. Endothermic reaction, because it absorbs heat from the environment
6.
Exothermic
Addition of sodium to water
Burning/combustion
Endothermic
Cracking of alkanes
Photosynthesis
Explanation:
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