Answer:
4
Explanation:
4.They are different states of the same pure substance
Answer:
Reaction a: chemical, reaction b: nuclear
Explanation:
Answer:
Benzene shows that it is actually unsaturated because it adds hydrogen or chlorine, although only when allowed to react under very vigorous conditions (higher temperature or pressure) compared to those required for alkenes and alkynes.
Explanation:
This is a true statement because the author can then be further looked into and researched
B) Gas is heated, And D) Mass of gas increased.
