what is a molecule long answer
Answers
Explanation:
A molecule is two or more atoms bonded together to form a single chemical entity. Each atom carries a certain number of electrons that orbit around the nucleus. The nucleus consists of protons and neutrons, of different numbers in different elements.
Answer:
A molecule is two or more atoms bonded together to form a single chemical entity. Each atom carries a certain number of electrons that orbit around the nucleus. The nucleus consists of protons and neutrons, of different numbers in different elements. The electrons that orbit the nucleus exist in various clouds, or valence shells. These shells prefer to have specific numbers of electons, depending on the shell. Sometimes, one atom will give away electrons to another atom. These atoms both change in electrical charge and become ions. One will be positive and one will be negative. These opposite electrical effects attract each other and form ionic bonds. These bonds to not make a molecule, and the ions can be easily separated. However, sometimes atom share electrons.
When two atoms share an electron, or multiple electrons, a strong bond is formed between them as the electron passes from one nucleus to the other and back. This electron activity ties the two atoms together. Molecules can form single bond, double bonds, triple bonds, and even more, depending on how many electrons they are sharing. Sharing an electron is known as a covalent bond and is very important in biology. Not only are covalent bond stronger that ionic bonds, but they store more energy. Organisms can use this to their advantage by storing energy in chemical bonds. It also means that the covalent bonds in food must be broken apart to gain energy. This is why our bodies have millions of enzymes, bacteria, and fungi that function together to break the many covalent bonds present in our food and release the energy.
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