Atomic Structure
Science
The SI Unit Of The Masses Of Particles In Atoms.
Atomic Mass Unit
The SI unit of the masses of particles in atoms atomic mass unit. An atomic mass unit amu is a small unit of mass used to measure the masses of particles in an atom, like protons and neutrons, where one amu is approximately 112 the mass of a carbon-12 atom.
A Stream Of Electrons Produced At The Negative Electrode Of A Cathode Ray Tube.
Cathode Ray
A stream of electrons produced at the negative electrode of a cathode ray tube. Cathode ray. A cathode ray is a beam of electrons traveling through a vacuum in a cathode ray tube.
An 1808 Theory By John Dalton. The First Theory To Relate Chemical Changes To Events At The Atomic Level.
Daltons Atomic Theory
An 1808 theory by John Dalton, the first theory to relate chemical changes to events at the atomic level, Dalton's atomic theory. Dalton's atomic theory states that matter is made of small, indivisible particles called atoms.
An Equation That Shows The Atomic Number And Mass Number Of Every Particle.
Nuclear Equation
An equation that shows the atomic number and mass number of every particle. Nuclear equation. A nuclear equation is a representation of a nuclear reaction showing the atomic numbers and mass numbers of the particles involved.
A Reaction That Changes The Composition Of An Atom’s Nucleus.
Nuclear Reaction
A reaction that changes the composition of an atoms nucleus. Nuclear reaction. It is a process where the core of an atom changes, releasing a large amount of energy.
