Atomic Structure - Subatomic Particles: Question Preview (ID: 10714)


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In the late 1800s, experiments using cathode ray tubes led to the discovery of the
a) positron
b) neutron
c) electron
d) proton

Which subatomic particles are located in the nucleus of a carbon atom?
a) protons, only
b) neutrons, only
c) protons and neutrons
d) protons and electrons

Which subatomic particle is negatively charged?
a) electron
b) neutron
c) positron
d) proton

Which total mass is the smallest?
a) the mass of 2 electrons
b) the mass of 2 neutrons
c) the mass of 1 electron plus the mass of 1 proton
d) the mass of 1 neutron plus the mass of 1 electron

Which two particles each have a mass approximately equal to one atomic mass unit?
a) electron and neutron
b) electron and positron
c) proton and electron
d) proton and neutron

Which statement is true about a proton and and an electron?
a) They have the same masses and different charges
b) They have the same masses and different charges
c) They have different masses and the same charges.
d) They have different masses and different charges.

Which conclusion was a direct result of the gold foil experiment?
a) An electron has a positive charge and is located inside the nucleus.
b) An electron has properties of both waves and particles.
c) An atom is mostly empty space with a dense, positively charged nucleus.
d) An atom is composed of at least three types of subatomic particles.

Which statement best describes electrons?
a) They are positive subatomic particles and are found in the nucleus.
b) They are negative subatomic particles and are found surrounding the nucleus.
c) They are positive subatomic particles and are found surrounding the nucleus.
d) They are negative subatomic particles and are found in the nucleus.

Which subatomic particle has no charge?
a) alpha particle
b) beta particle
c) neutron
d) electron

Compared to the entire atom, the nucleus of the atom is
a) smaller and contains most of the atom's mass
b) smaller and contains little of the atom's mass
c) larger and contains most of the atoms mass
d) larger and contains little of the atom's mass

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