In chemical reactions, there are open-chain compounds and closed-chain compounds. (Answer look at the picture)
Open-chain compounds (Aliphatic) are carbonate compounds with chains that do not meet between ends, saturated or unsaturated both branched and unbranched.
Closed-chain compounds is a term in chemistry used for compounds whose atoms are joined together to form rings. The number of elements making up the ring varies and is more than three. The elements that make up the cycle are also different from the elements carbon (carbon cycle), elements other than carbon (inorganic cycle), or both (heterocyclics).
Cyclic compounds can be called aromatic if they meet several conditions, namely:
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