chemistry atomic model

What subatomic particles make up the nucleus of an atom

Neutrons and protons

Who believed that all atoms of the same element would be the same

John Dalton

Which of the following is the best description of JJ Thompson’s model of the atom?

A sphere of positive material with electrons embedded in it

JJ Thompson discovered the electron using

Cathode ray tube

Who was the first contributor to the atomic theory?

Democritus

Neil’s bore added what to the model of the atom

Energy level levels

Electron orbitals were suggested by who

Erwin Schrodinger

Robert Milligan found the charge of electron using the experiment called

Oil drop experiment

What is Neils Bohr contribution to the atomic theory?

Created a model of the atom with electrons moving around the nucleus in fixed orbits

What were John Dalton’s contributions to the atomic theory?

Hypothesis that the atom is a tiny heart sphere and the law of definite proportions and the law of multiple proportions and created the atomic theory

ultimately schrodingers model had electrons in what around the nucleus

Clouds

who discovered that the atom has small dense positively charged nucleus

Ernest Rutherford

which of the following would be the closest analogy to Dalton’s model of the atom

Marble

Debroglie is remembered for their contributions to understanding this about electrons

they can behave like a wave

is it possible to find the velocity and position of a moving particle at the same time

No

which of the following is the best analogy for Thompson’s model of the atom

Plum putting

Who was the first to propose that matter consists of invisible particles of matter called atoms

Democritus

Ernest Rutherford discovered which part of the atom through the use of gold foil

nucleus

Discovered the element oxygen and disapproved the existence of phlogiston

Antoine Lavoisier

the boar model is the first atomic model to describe electrons shells. What does this mean

levels and paths that the electrons travel around when they orbit the nucleus

who developed the law of conservation of mass

Antoine Lavoisier

Rutherford realized that the atomic nucleus was positive positively charged because

it deflected Alpha particles

Ernest Rutherford discovered that atoms were mostly what

empty space