Branches of Physics

Mechanics: study of motion, forces, and energy
Thermodynamics: study of heat, temperature, and energy transfer
Electromagnetism: study of electricity, magnetism, and electromagnetic waves
Optics: study of light, its properties, and behavior
Quantum Mechanics: study of behavior of matter and energy at atomic and subatomic level
Relativity: study of space and time, including special and general relativity

Matter: anything that has mass and occupies space
Energy: ability to do work, measured in joules (J)
Force: push or pull that causes an object to change motion, measured in newtons (N)
Work: transfer of energy from one object to another, measured in joules (J)
Power: rate at which work is done, measured in watts (W)

Inorganic Chemistry: study of non-living matter, such as minerals and rocks
Organic Chemistry: study of living matter, such as carbon-based compounds
Physical Chemistry: study of physical principles underlying chemical reactions and processes
Analytical Chemistry: study of methods and techniques used to analyze and identify chemical substances
Biochemistry: study of chemical processes that occur within living organisms

Atom: smallest unit of matter, consisting of protons, neutrons, and electrons
Molecule: group of atoms bonded together
Element: substance consisting of only one type of atom
Compound: substance consisting of two or more different elements
Chemical Reaction: process in which one or more substances are converted into new substances

Mechanics deals with motion, forces, and energy, covering topics such as kinematics, dynamics, and statics.
Thermodynamics involves the study of heat, temperature, and energy transfer, including laws of thermodynamics and thermodynamic systems.
Electromagnetism explores electricity, magnetism, and electromagnetic waves, including electric fields, magnetic fields, and electromagnetic induction.
Optics examines light, its properties, and behavior, including reflection, refraction, diffraction, and interference.
Quantum Mechanics delves into the behavior of matter and energy at atomic and subatomic levels, including wave functions, Schrödinger's equation, and uncertainty principle.
Relativity investigates space and time, including special relativity, general relativity, and time dilation.

Matter has mass and occupies space, existing in various states such as solid, liquid, and gas.
Energy is the ability to do work, measured in joules (J), and can take various forms like kinetic, potential, thermal, and electrical energy.
Force is a push or pull that causes an object to change motion, measured in newtons (N), with types including frictional, normal, and gravitational forces.
Work is the transfer of energy from one object to another, measured in joules (J), and depends on the force applied and displacement.
Power is the rate at which work is done, measured in watts (W), and is a measure of energy transfer per unit time.

Inorganic Chemistry studies non-living matter, including minerals, rocks, and inorganic compounds, and their properties and reactions.
Organic Chemistry focuses on living matter, including carbon-based compounds, and their properties, reactions, and synthesis.
Physical Chemistry explores the physical principles underlying chemical reactions and processes, including thermodynamics, kinetics, and quantum mechanics.
Analytical Chemistry develops methods and techniques for analyzing and identifying chemical substances, including spectroscopy, chromatography, and electrochemistry.
Biochemistry examines the chemical processes that occur within living organisms, including metabolism, enzyme catalysis, and biomolecular interactions.

Atom is the smallest unit of matter, consisting of protons, neutrons, and electrons, with unique properties like atomic number and atomic mass.
Molecule is a group of atoms bonded together through chemical bonds, with properties like molecular shape and polarity.
Element is a substance consisting of only one type of atom, with unique properties like atomic number and atomic mass.
Compound is a substance consisting of two or more different elements, with properties like chemical formula and chemical bonding.
Chemical Reaction is a process in which one or more substances are converted into new substances, involving chemical changes and reactions like oxidation, reduction, and acid-base reactions.