Ion

An ion (/ˈaɪən, -ɒn/) is an atom or a molecule in which the total number of electrons is not equal to the total number of protons, giving the atom or molecule a net positive or negative electrical charge.

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Vector Quantitiy

Vectors have magnitude and direction, scalars only have magnitude. The fact that magnitude occurs for both scalars andvectors can lead to some confusion. There are some quantities, like speed, which have very special definitions

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Kinetic Energy

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

Power

In physics, power is the rate of doing work. It is equivalent to an amount of energy consumed per unit time. In the SI system, the unit of power is the joule per second (J/s), known as the watt in honour of James Watt, the eighteenth-century developer of the steam engine. It is a scalar quantity.

Energy

In physics, energy is a property of objects which can be transferred to other objects or converted into different forms, but cannot be created or destroyed.

Volume

Volume is the quantity of three-dimensional space enclosed by

Density

The density, or more precisely, the volumetric

Vapor Pressure

Vapor pressure or equilibrium vapor

Formula

In science, a formula is a concise way

Aqua Regia

Aqua regia is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a yellow-orange fuming liquid. Aqua regia was so named because it can dissolve the noble metals gold and platinum.

Formula: HNO₃₊₃ HCl
Vapor pressure: 2.1 kPa
Boiling point: 108 °C
Melting point: -42 °C
Density: 1.21 g/cm³

Cell

The cell (from Latin cella, meaning "small room") is the basic

Metabolism

Metabolism (from Greek: μεταβολή metabolē, "change") is

Cloning

In biology, cloning is the process of producing

Watt

Watt is the unit of power (symbol: W). The watt unit

Joule

(j l, joul) The SI derived unit used to measure

Molecule

A molecule is the smallest particle

Atom

An atom is the smallest constituent unit of

Biology

Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, evolution, distribution, and taxonomy. Modern biology is a vast and eclectic field, composed of many branches and subdisciplines.

Chemistry

Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter.

Force

force definition. In physics, something that causes a change in the motion of an object. The modern definition of force (an object's mass multiplied by its acceleration) was given by Isaac Newton in Newton's laws of motion.