The first scientific experiment that indicated the existence of atoms was performed by John Dalton during the 1800s. These early experiments did not yield information regarding the atom's structure. The structure of atoms was first explained through the discovery of electrons in 1897 by the physicist J. J. Thompson.
The philosophical idea of an atom was developed by the Greek philosopher Democritus in 460 B.C. The idea of an atom was a result of a question pertaining to the limits of the division of matter. This idea was later dismissed by Aristotle and therefore given no merit by Greek philosophers or individuals.Learn More
John Dalton's atomic model's name is the "billiard ball" model. This is because, according to Dalton, there are many different atoms and they cannot be broken into smaller pieces.Full Answer >
The atomic number indicates the number of protons present in the nucleus of an atom, which is used to uniquely identify the atom, as well as its chemical properties. The atomic number is denoted by the universal symbol "Z."Full Answer >
A beta particle is made up of a positron or an electron that has been emitted when an atom undergoes beta decay. Beta particle emission is different from alpha and gamma radiation, which consist of helium nuclei and high-powered photons respectively.Full Answer >
An atom is the smallest part of an element that has the same properties as the element. All atoms in a particular element are the same.Full Answer >