Answer:
the basic unit of a chemical element.
Explanation:
The minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.
Phản ứng este hoá ạ
good luckk
Answer:
Explanation:
element - a basic substance that can't be simplified (hydrogen, oxygen, gold, etc...) molecule - two or more atoms that are chemically joined together (H2, O2, H2O, C6H12O6, etc...) compound - a substance that contains more than one element (H2O, C6H12O6, etc...)
