Question

1. Define the atomic mass unit.
2. Why is it not possible to see an
atom with naked eyes?
3 What is a Molecule?​

Answer 1

Answer:

a unit of mass for expressing masses of atoms, molecules, or nuclear particles equal to ¹/₁₂ the mass of a single atom of the most abundant carbon isotope 12C.

Explanation:

2ans) Atoms are really small. So small, in fact, that it's impossible to see one with the naked eye, even with the most powerful of microscopes. At least, that used to be true. Now, a photograph shows a single atom floating in an electric field, and it's large enough to see without any kind of microscope.

3ans) Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

Answer 2

Answer:

1:-The dalton or unified atomic mass unit is a unit of mass widely used in physics and chemistry. It is defined as 1/12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest. The atomic mass constant, denoted mᵤ is defined identically, giving mᵤ = m/12 = 1 Da.

2:-Atoms are really small. So small, in fact, that it's impossible to see one with the naked eye, even with the most powerful of microscopes. At least, that used to be true. Now, a photograph shows a single atom floating in an electric field, and it's large enough to see without any kind of microscope.

3:-the smallest unit into which a substance can be divided without changing its chemical nature.