The Atomic Model
Scientists observed that opposite electrical charges attract each other while other repel each other. This was know as what law.
What is the Law of electrostatic charges.
The model that JJ Thomson proposed that reminded other scientist of the a traditional English Christmas pudding.
What is the Plum Pudding model.
Positively charge protons and electrically neutral neurons are found where.
What is the nucleus?
Name the scientist associate discovery of electrons.
Who is J.J. Thomson?
This Greek philosopher used the word átomos to describe indivisible particle of matter.
Who is Democritus?
An atom made up of dense, positively charged central nucleus surrounded by negatively charged electrons.
What is the nuclear model?
Name the scientist who discovered the nucleus in a cell.
Who is Ernest Rutherford?
This atomist proposed a comprehensive theory of atoms in 180.
Who is John Dalton?
A key factor in the development of new atomic models.
What is workability?
Atoms of the same element always have the same number of_.
What is protons?
What is electrons?
Ernest Rutherford and his students confirmed the existence of what using gold foil.
What is nucleus.
Despite not being up-to-date, this model remains the most useful for its ability to illustrate some chemical processes.
What is the Bohr‘s Model?
Indicate the name of an element along with its atomic number and mass number.
What is isotope notation?
The charge on a certain ion is indicated as 2+. This is an example of loss or gained electrons.
What is loss of electrons?
Niels Bohr established
What is that electrons move in distinct orbits with particular energy levels at fixed distances from the nucleus?
A branch of physics that explored the behavior of matter and energy at the atomic and subatomic levels.
What is Quantum mechanics.
Exist either as positively charged cations that have lost electrons or as negatively charged anions that have gained electrons.
What is Ions?
The isotope notation for Phosphorus—31?
What is 31/15P?