These are reactions that take in energy from the surroundings (ie energy enters the reaction, which will help you to remember the name endothermic). The energy is usually transferred as heat energy, causing the reaction mixture and its surroundings to become colder.
Answer:
D.
Explanation:
I took this test as a freshman and this was the only question of 4 that I can remember
Answer:
the answer is C
Explanation:
This is because group6 elements are diatomic and when they are chemically combined their subscript 2 cancels out
Answer:
chemical energy is stored in the wood before combustion.
