History Of Atomic Theory Question Preview (ID: 16397)

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In Thomson's plum pudding model the mass of the atom is in the
a) electrons
b) matter between the electrons
c) nucleus
d) protons

This scientist published a detailed atomic theory in 1808 based on evidence he gathered through experiments with gases. His atomic theory laid the groundwork for later atomic models.
a) Democritus
b) John Dalton
c) Ernest Rutherford
d) Neils Bohr

The modern atomic model is also sometimes called the_____ model.
a) solar system
b) Bohr
c) plum pudding
d) quantum mechanics

Scientist have developed the Atomic Theory over a period of hundreds of years. What will help us further the development?
a) increasing the number of atoms in the universe
b) decreasing the number of atoms in the universe
c) increasing the ability of technology, like microscopes, to see even smaller particles
d) decreasing the ability of technology, like microscopes, to see even smaller particles

The building blocks of matter are
a) electrons
b) atoms and molecules
c) as of yet indiscovered
d) none of these

The modern atomic theory has been updated over the years as new observations of the atom have been made. What is likely to happen in the future?
a) We will find out that the entire model is wrong.
b) We will find out that the entire model is finally all figured out.
c) It will be updated as new observations are made.
d) There's just no way to tell what might happen.

British physicist J.J. Thomson was the first to identify the
a) proton
b) neutron
c) electron
d) atomic theory

An electron enters_______ when it has absorbed energy and moved to a higher energy level.
a) an orbit
b) an excited state
c) a ground state
d) a quantum level

In Rutherford's gold foil experiment the alpha particles pass through which part of the atom?
a) the nucleus
b) the proton shield
c) the valence electron shell
d) the electron cloud

Dalton's experiments advanced our understanding of the atom without
a) carefully observing and measuring events
b) discovering the internal structure of the atom
c) examining the ratios of elements involved in chemical reactions
d) testing hypothesis

Which of the following models shows how unpredictable electrons are?
a) The atom is a solid, uniform ball
b) A small ball in a large empty electron shell
c) A solid ball with electrons interspersed throughout
d) The electron cloud shows the movement of electrons

Which scientist offered proof that atoms exist?
a) Aristosle
b) Democritus
c) John Dalton
d) Issac Newton

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