Question

what are atoms and molecules?give two examples.​

Answer 1

Answer:

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Atom:-

• The smallest part of a substance that cannot be broken down chemically. Each atom has a nucleus (center) made up of protons (positive particles) and neutrons (particles with no charge). Electrons (negative particles) move around the nucleus.

• Examples
• Oxygen (O)
• Hydrogen (H)
• Argon (Ar)
• Plutonium (Pu)

Molecule:-

• 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. ... Several methods of representing a molecule's structure.
• Examples
• Water (H2O)
• Sodium chloride (NaCl)
• Nitrogen (N2)
• Carbon dioxide (CO2)

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Answer 2

ATOM :-

• The smallest part of a substance that cannot be broken down chemically.
• An atom is made up of three tiny kinds of particles called subatomic particles :- protons, neutrons, and electrons.
• The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a orbit.
• Examples :- Oxygen (O) & Hydrogen (H)

MOLECULE :-

• Molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound.
• Molecules are made up of atoms that are held together by chemical bonds.
• These bonds form as a result of the sharing or exchange of electrons among atoms.
• Examples :- Water (H2O) & Carbon dioxide (CO2)