Question

atoms and molecule notes​

Answer 1

Answer:

Atoms and molecules are responsible for forming tiny sand particles, gargantuan black holes and everything in between. The atom is the most fundamental unit of matter, making up everything that we see around us. It is extremely small, measuring in at less than 0.1 to 0.5 nanometers.

Atoms:

An atom is the defining structure of an element, which cannot be broken by any chemical means.

The atomic symbol has three parts:-

The symbol X: the usual element symbol

The atomic number A: equal to the number of protons

The mass number Z: equal to the total number of protons and neutrons in an element.

Molecular mass:

Molecular mass of an element is defined as the sum of the masses of the elements present in the molecule.

Molecular mass is obtained by multiplying the atomic mass of an element with the number of atoms in the molecule and then adding the masses of all the elements in the molecule.

Explanation:

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