atom theories

atom theories

Multiple Choice

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons

• Protons and Neutrons

• Neutrons and Electrons

• Protons, Neutrons and Electrons

Multiple Choice

which of the below choices correctly labels the atom

• A: electron

  B: proton

  C: neutron

  D: nucleus

• A: proton

  B: electron

  C: nucleus

  D: neutron

• A: electron

  B: neutron

  C: proton

  D: nucleus

• A: nucleus

  B: electron

  C: neutron

  D: proton

Multiple Choice

which set of values correctly gives the charges of sub-atomic particles

• electron: +

  proton: -

  neutron: no charge

• electron: +

  proton: no charge

  neutron: -

• electron: -

  proton: no charge

  neutron: +

• electron: -

  proton: +

  neutron: no charge

Multiple Choice

which of the below gives the right masses of the sub-atomic particles

• electron: 1

  proton: 1

  neutron: no mass

• electron: no mass

  proton: 1

  neutron: 1

• electron: 1

  proton: no mass

  neutron: no mass

• electron: no mass

  proton: 1

  neutron: no mass

Multiple Choice

which of the below is a definition of an atom

• Make up part of an atom and

  have a negative charge.

• Found in the nucleus of an

  atom, these do not have

  a charge

• The smallest part of an

  element, made up of protons,

  neutrons and electrons.

Multiple Choice

which one of the below defines neutron

• Found in the nucleus of an

  atom, these do not have

  a charge.

• This refers to the number of

  protons an element has.

• Found in the nucleus of an

  atom, they have a

  positive charge.

• The smallest part of an

  element, made up of nucleons and electrons

Multiple Choice

which of the below defines atomic number

• This refers to the number of

  protons an atom has.

• Found in the nucleus of an

  atom, they have a

  positive charge.

• The smallest part of an

  element, made up of protons,

  neutrons and electrons.

Multiple Choice

which of the below defines proton

• Found in the nucleus of an

  atom, these do not have

  a charge.

• Found in the nucleus of an

  atom, they have a

  positive charge.

• revolves around nucleus and has a negative charge

Multiple Choice

which one of the below defines electron

• revolves around nucleus and has a negative charge

• refers to the number of

  protons an element has.

• Found in the nucleus of an

  atom, they have a

  positive charge.

• Found in the nucleus of an

  atom, these do not have

  a charge.

Multiple Choice

which number in this table is -1

• A

• B

• C

• D

Multiple Choice

What are subatomic particles? 

• the nucleus 
• electron cloud
• positive charge
• electrons, protons, and neutrons

Multiple Choice

In an atom, the number of protons is equal to the number of ____________.

• energy levels

• neutrons

• neurons

• electrons

Multiple Choice

These will determine what element an atom is. 

• number of neutrons
• number of electrons
• number of atoms 
• number of protons 

Multiple Choice

Subatomic particle with a charge of 0

• neutron
• proton
• electron
• quark

Multiple Choice

Atoms of the same element must always have the same number of _________

• electrons
• neutrons
• isotopes
• protons

Multiple Choice

What mass does a neutron have?

• 1 amu

• 0 amu

• -1 amu

• +2 amu

Multiple Choice

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons

• Protons and Neutrons

• Neutrons and Electrons

• Protons, Neutrons and Electrons

Multiple Choice

Who proposed the first atomic view of matter?

• Lavoisier
• Empedocles
• Democritus
• Priestley

Multiple Choice

Atom comes from the word atomos, meaning

• microscopic

• elemental

• indivisible

• molecular

Multiple Choice

This was the first model of the atom ever proposed. It was simple and

described atoms as tiny spheres that could not be broken down into

smaller pieces.

• a) Democritus's model of the atom

• b) The "Plum Pudding Model" of the atom

• c) The "Rutherford Model" of the atom

• d) The "Quantum Mechanical Model" of the atom

Multiple Choice

Democritus and Dalton did NOT believe that

• atoms are indivisible and indestructible

• all matter is made of atoms

• atoms can combine to form compounds

• the atom is made up of smaller particles

Multiple Choice

Democritus and Dalton did NOT believe that

• atoms are indivisible and indestructible

• all matter is made of atoms

• atoms can combine to form compounds

• the atom is made up of smaller particles

Multiple Choice

What Greek philosopher first spoke about the idea of an atom?

• Democritus
• Dalton
• Thompson
• Rutherford

Multiple Choice

Which of the following is NOT a part of Dalton's atomic theory?

• All matter is composed of atoms and empty space

• Atoms are always in motion.

• Atoms of the same element are identical.

• Atoms can't be destroyed...merely re-arranged.

Multiple Choice

Which of the following is NOT a part of Dalton's atomic theory?

• All matter is composed of atoms and empty space

• Atoms are always in motion.

• Atoms of the same element are identical.

• Atoms can't be destroyed...merely re-arranged.

Multiple Choice

John Dalton stated:

• a) elements are made of atoms

• b) atoms of a given element are identical

• c) atoms cannot be subdivided, created, nor destroyed

• d) all of the above

Multiple Choice

Discovered the electron within the atom

• Thomson

• Chadwick

• Schrodinger & Heisenberg

• Dalton

Multiple Choice

What did the Plum pudding model suggest about the

structure of atoms?

• a) That neutrons and electrons were arranged in a sphere

• b) that is was a sphere of positive charge throughout which the

  electrons were distributed

• c) That an atom was filled with neutrons, protons and a sphere

  of negative charge.

• d) That neutrons, protons and electrons were distributed

  throughout a sphere.

Multiple Choice

This model was developed after J.J. Thompson discovered

electrons, a particle smaller than an atom. This shows electrons floating freely in a positive space

• a) The "Plum Pudding Model" of the atom

• b) The "Rutherford Model" of the atom

• c) Democritus's model of the atom

• d) The "Quantum Mechanical Model" of the atom

Multiple Choice

Discovered the electron using cathode ray tube

• a) Joseph Thomson

• b) John Dalton

• c) Ernest Rutherford

• d) Robert Millikan

Multiple Choice

J.J. Thomson's experimental setup can be seen in the image. What is happening to the cathode rays?

• they are attracted to the negative plate

• they are attracted to the positive plate

• they are stopped by the paltes

• they are unattracted to either plate

Multiple Choice

The scientist responsible for "discovering" the nucleus is:

• bohr

• rutherford

• shrodinger

• einstein

Multiple Choice

The nucleus of an atom can be described as:

• a) spacious and negatively charged

• b) dense and positively charged

• c) spacious and positively charged

• d) dense and negatively charged

Multiple Choice

How did Rutherford discover the proton?

• a) Cathode tube ray experiment

• b) Gold Foil Experiment

• c) Planetary Model

• d) Plum Pudding Model

Multiple Choice

What particle was used in the gold foil experiment?

• beta particle

• alpha particle

• gamma ray

Multiple Choice

Most of the alpha particles went straight through the gold

foil. This suggested that....

• a) There is no interference between alpha and gold.

• b) Most of the atom is made up of empty space.

• c) The alpha particles were very tiny.

• d) None of the above

Multiple Choice

Some of the alpha particles fired at the gold foil were

deflected at angles. This was due to...

• a) reflection of the alpha source when it it the fluorescent screen.

• b) The alpha particles hitting the gold nucleus.

• c) Repulsion forces between the positively charged nucleus and

  the positively charged alpha particles.

• d) A mis-firing of the alpha source

Multiple Choice

Rutherford’s gold foil scattering experiment indicated that

• a) the nucleus of an atom occupies most of an atom’s volume

• b) positive charges are dispersed throughout the atom.

• c) positive charges are concentrated in a very small core at the

  atom’s center

• d) protons and neutrons are located around the nucleus.

Multiple Choice

His atomic model included a dense positive core in an atom,

surrounded by negatively charged particles

• joseph thomson

• niels bohr

• ernst rutherford

Multiple Choice

How did Rutherford develop his atomic theory?

• Testing gamma rays against dogs

• Testing alpha rays of radiation against gold foil

• Testing zinc against silver

• Testing zinc against gold

Multiple Choice

Which scientist determined that the mass of electrons is negligible compared to the mass of the atom?

• Thomson

• Rutherford

• Bohr

• Dalton

Multiple Choice

Who discovered the nucleus of the atom?

• Dalton

• Thomson

• Rutherford

• Bohr

Multiple Choice

Why were Rutherford's students surprised by the results of the gold foil experiment?

• they didn't expect the alpha particles to bounce back from the foil

• they didn't expect the alpha particles to continue in a straight path

• they expected only a few alpha particles to bound back from the foil

• they expected the alpha particles to be deflected by electrons

Multiple Choice

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.

• alpha particles have a positive charge.

• gold is not a dense as previously thought.

• there is a dense positively charged nucleus at the center of an atom.

Multiple Choice

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.

• alpha particles have a positive charge.

• gold is not a dense as previously thought.

• there is a dense positively charged nucleus at the center of an atom.

Multiple Choice

Who stipulated that electrons orbit the nucleus at fixed energies and distances?

• Albert Einstein
• Max Planck
• Ernest Rutherford
• Niels Bohr

Multiple Choice

Which scientist proposed a model of the atom in which the electrons are orbiting at different energy levels?

• Niels Bohr

• James Chadwick

• John Dalton

• Ernest Rutherford

Multiple Choice

How is Bohr's atomic model different from Rutherford's model?

• Bohr's model has a nucleus

• Bohr's model has electrons

• electrons in Bohr's model are located farther from the nucleus

• electrons in Bohr's model are located in circular energy levels

Multiple Choice

Based on his research of the atom, James Chadwick concluded that

• a cathode ray has a negative charge

• the electrons are found in an electron cloud

• the nucleus contains neutrons as well as protons

• the mass of an atom is concentrated in its center

Multiple Choice

Whose atomic model is the most widely accepted model today?

• Rutherford's Atomic Model

• Dalton's Billiard Ball Model

• J.J Thompson's Plum Pudding Model

• Bohr's Model and Schrodinger's Quantum Atomic Models

Multiple Choice

which particle is responsible for the volume of the atom

• proton

• electron

• neutron

• notrino

Multiple Select

which particles are responsible for the mass of the atom

• proton

• electron

• neutron

• boson

Multiple Choice

Which metal element is used in the Rutherford experiment as

foil?

• silver

• iron

• gold

• copper

Multiple Choice

why rutherford chose gold metal as a foil

• it is elegant

• it is extremely heavy

• it is shiny

• it can be made extremely thin