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What is science?

Science is any systemic learning from testable experiments to getting the knowledge of physical or chemical phenomena occurring in our universe or environment.

what is science like physical, chemical, medical, and environmental science?

Science is divided into many branches. Physics, chemistry, and biology are the main branches of science. Other branches are medicinal, environmental, nuclear science, etc. In this part of science, we discuss topics related to chemistry, biochemistry, and medicinal chemistry.

Van der Waals equation for real gases derivation and formula

Van der Waals Equation

What is Van der Waals equation? Van der Waals equation is given by modifying the ideal gas law in 1873. He put the reasons for...
Acids and bases properties and definition in chemistry

Acids Bases

Acids and bases properties Acids and bases in chemistry commonly possess some opposite properties. For example, acids are chemical substances whose aqueous or water solution...
de Broglie wavelengths, frequency and energy relation for light photon or electron

de Broglie Relation

de Broglie Hypothesis de Broglie wavelength relation pointed out that just like photons of light, electron has also both particle and wave properties of matter....
Calculate oxidation number or state of periodic table chemical elements

Oxidation Number

Oxidation number of periodic table elements Oxidation number or state of periodic table elements in a chemical compound or molecule is the formal charges (positive...
Electron affinity definition, calculation and trend of periodic table elements in chemistry

Electron Affinity

What is electron affinity? Electron affinity (EA) or electron gain enthalpy or simply affinity in the periodic table defines the amount of energy released when...
Shielding electrons effect and Slater's rule for calculating the screening constant

Shielding Electrons

Shielding electrons and Slater's rule Shielding electrons or screening electrons decreases the attractive force between the valence shell electron and the nucleus of the atom....
Ideal gas law formula or equation derivation in chemistry or physics

Ideal Gas Law

What is ideal gas law? Ideal gas law or perfect gas law represents the mixed relationship between pressure, volume, and temperature of gases for learning...
Kinetic gas theory equation formula derivation, calculate root mean square speed, average and total kinetic energy

Kinetic Theory of Gases

What is Kinetic Theory of Gases? Kinetic theory of gases and kinetic gas equation first-time developed by Bernoulli in 1738 to derive the molecular properties...
Dipole moment definition, examples, unit in chemistry, application to calculate μ for water and methane molecules

Dipole Moment

What is dipole moment in chemistry? Dipole moment in chemistry expressed the polar character or polarity of the molecules. The product of charge and distance...
Radioactivity definition, measurement and unit of radioactive elements in chemistry


What is radioactivity? Radioactivity is the phenomenon of emission of radiations as a result of the spontaneous decay of alpha, beta, and gamma particles from...