What quantities vary between isotopes of an element?
  • protons, electrons, and atomic mass
  • protons, electrons, and atomic number
  • neutrons and electrons
  • neutrons and atomic mass
What is the charge of a neutron?
  • Positive
  • Negative
  • No charge.
(select the right answer)Overall atoms are ______ and have an equal number of ________ and ________
  • neutrons, protons, electrons
  • neutral, protons, electrons
  • elements, electrons, protons
  • neutral, protons, neutrons
Which type of radiation releases an electron?
  • Alpha radiation
  • Beta radiation
  • Gamma radiation
What type of radiation can be stopped by a piece of paper?
  • Alpha radiation
  • Beta radiation
  • Gamma radiation
What particle is released when an unstable isotope undergoes alpha radiation?
  • an helium nucleus
  • an electron
  • a photon of light
Which process involves the splitting of large nuclei?
  • alpha decay
  • nuclear fusion
  • beta decay
  • nuclear fission
What type of nuclear reaction occurs in the Sun?
  • Nuclear fission
  • Beta decay
  • Alpha decay
  • Nuclear fusion
Which particle has a positive charge?
  • electron
  • orbital
  • proton
  • neutron
Choose the particle that has no charge.
  • nucleus
  • neutron
  • proton
  • electron
This particle determines what element you have - the elements identity.
  • electron
  • proton
  • neutron
  • valence shell
An electron has a _____ charge.
  • negative
  • positive
  • neutral
What are the maximum number of electrons that go on the first 3 energy levels?
  • 2,4,16
  • 2,8,18
  • 4,8,12
  • 3,4,6
What are valence electrons?
  • electrons on the first orbital always
  • nucleus
  • the outermost shell
  • the number of electrons on the outermost orbital
Which particles make up the nucleus of an atom?
  • protons and neutrons
  • electrons and protons
  • electrons, protons, and neutrons
  • electrons and neutrons
What is the mass number and name of an element with 8 protons and 8 neutrons?
  • 16 - Carbon
  • 16 - Oxygen
  • 24 - Oxygen
  • 8 - Neon
An element with a mass number of 10 and an atomic number of 6 has how many protons?
  • 5
  • 8
  • 6
  • 10
What is the atomic mass of the atom pictured?
  • 11
  • 12
  • 22
  • 23
How many electrons are in the atom pictured?
  • 1
  • 2
  • 3
  • 0
What does the nucleus of an atom contain?
  • Electrons and neutrons
  • Protons and neutrons
  • Neutrinos and positrons
  • Electrons and megatrons
How many protons, electrons and neutrons does an neutral atom of Calcium have? Its atomic number is 20 and the mass number is 40.
  • 20 protons, 18 electrons and 40 neutrons
  • 20 protons, 20 electrons and 20 neutrons
  • 40 protons, 40 electrons and 20 neutrons
  • 20 protons, 18 electrons and 20 neutrons
What is the atomic number?
  • number of protons
  • number of neutrons
A positively charged particle found in the nucleus is called a
  • neutron.
  • proton.
  • electron.
  • positron.
Electrons are subatomic particles that exist
  • inside the nucleus.
  • in simultaneous dimensions.
  • in parallel universes.
  • outside the nucleus.
Neutrons have almost exactly the same mass as
  • electrons.
  • positrons.
  • protons.
  • quarks.
Because atoms are neutral, each positive charge is
  • the same as a neutral charge.
  • balanced by a negative charge.
  • the same as no charge.
  • balanced by a neutral charge.
Which statement best describes the mass number (#) of an atom?
  • the sum of electrons and neutrons in the nucleus
  • the sum of protons & neutrons in the nucleus
  • the difference in mass between protons & neutrons
  • the difference in mass between electrons and neutrons
Every neutral atom has the same number of protons and electrons, however
  • they may not have the same # of neutrons.
  • they cannot combine with other atoms.
  • they cannot form isotopes.
  • they may also have the same atomic mass.
When an atom contains more electrons than protons, it is
  • a neutral atom with no charge
  • an ion and negatively charged
  • an ion and positively charged
  • an isotope and has more mass
If a carbon atom has six protons and has a mass of 13 amu, how many neutrons are in that carbon atom?
  • 5
  • 6
  • 7
  • 8
0 h : 0 m : 1 s

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