Which scientist was the first person responsible for proposing the discovery of the electron?

Which scientist was the first person responsible for proposing the discovery of the nucleus?

Which scientist claimed that the atom was a small, dense, solid sphere?

Which scientist's model is referred to as the Plum Pudding Model?

Which scientist's model is referred to as the Planetary model?

Which scientist proposed the idea that the electrons orbited the nucleus on fixed paths with designated energies?

Who discovered the alpha particle?

Which model of the atom is the most up to date model?

Which model of the atom describes the location of electrons as probable within a dense "cloud" surrounding the nucleus of an atom?

Who was the first contributor to the atomic theory?

What were J. J. Thomson's three contributions to the atomic theory?

What are two facts about Democritus's?

What is Neils Bohr's contribution to the atomic theory?

What were Ernest Rutherford's three contributions to atomic theory?

From the results of the Gold Foil Experiment, Rutherford drew what 2 conclusions about the atom?

Mass is neither created nor destroyed during chemical reactions or physical changes.

Joseph Proust stated that, regardless of the amount, a compound is always composed of the same elements in the same proportion by mass. This is better known as....

Who discovered the natural radioactivity of uranium?

Discovered Radium and Polonium?

Who is considered the "father of modern chemistry" ?

Developed the “chocolate chip cookie” model of the atom, a modern version of the model type since Americans have no clue what his pudding dessert is!

Proposed the concept that electrons pairing, and created a structure to explain chemical bonding.

Developed the model of the atom that stated that electrons are found orbiting around the nucleus, but had no idea about why they didn't collapse into the positively charged nucleus.

His work established spectroscopy, and linked spectral lines to elements.

Developed the “wave mechanical” model of the atom

His 5 part atomic theory suggested that atoms were rearranged during chemical reactions to form new substances.

Who discovered that the atom had an small, dense, positively charged center?

Place the following atomic models in order, from earliest to latest:

A) Rutherford B) Thomson C) Dalton D) Heisenberg & Schrodinger E) Bohr

Who invented a device to detect radioactive particle?

Which scientists believed an atom was indivisible? (Choose all correct responses.)

Which scientist discovered that the atom has parts - which means it can be divided?

His work rearranged the periodic table by putting the elements in order by atomic number rather than by atomic mass.

Developed an equation to describe the behavior of an electron.

Considered the "father of quantum mechanics", creating an entire new branch of physics based upon energy is quantized into packets of energy called quanta.