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Eighth Grade (Grade 8) Atomic Structure Questions

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Grade 8 :: Atomic Structure by emoster
In a neutral atom, # Protons = # Electrons
  1. True
  2. False
Grade 8 :: Atomic Structure by Ms_VThomas
Compared to the charge and mass of a proton, an electron has
  1. the same charge and a smaller mass
  2. the same charge and the same mass
  3. opposite charge and smaller mass
  4. opposite charge and the same mass
Grade 8 :: Atomic Structure by Megstowe1
Atoms consist of: (check all that apply)
  1. Protons
  2. Molecules
  3. Neutrons
  4. Electrons
Grade 8 :: Atomic Structure by chucku
What is the nucleus made of?
  1. protons
  2. electrons
  3. neutrons
  4. protons and electrons
  5. protons and neutrons
  6. electrons and neutrons
Grade 8 :: Atomic Structure by der1228
If the nucleus of an atom contains 12 protons, how many electrons are there in a neutral atom? Explain.
  • There are 12 electrons. To be neutral, an atom must have the same number of electrons as protons.
Grade 8 :: Atomic Structure by gtckn
An atom becomes negatively charged by
  1. gaining an electron
  2. losing an electron
  3. losing a proton
  4. gaining a neutron
Grade 8 :: Atomic Structure by Ms_VThomas
A proton has approximately the same mass as
  1. a neutron
  2. a beta particle
  3. an alpha particle
  4. an electron
Grade 8 :: Atomic Structure by emoster
What charge do protons carry?
  1. Positive
  2. Negative
  3. Neutral
Grade 8 :: Atomic Structure by emoster
What charge do neutrons carry?
  1. Positive
  2. Negative
  3. Neutral
Grade 8 :: Atomic Structure by der1228
Isotopes are atoms of the same element with the same number of protons and
  1. a different number of electrons
  2. a different number of molecules
  3. a different number of neutrons
  4. the same number of neutrons
Grade 8 :: Atomic Structure by bigeekay
In an element with a neutral charge, the atomic number is equal to the number of
  1. atoms
  2. neucleus
  3. protons
  4. electrons
  5. both c and d are correct
Grade 8 :: Atomic Structure by emoster
Which particle(s) are found in the nucleus?
  1. Proton
  2. Electron
  3. Neutron
  4. Both A and C
Grade 8 :: Atomic Structure by Junebug
Which of the following represents an electron configuration of a calcium atom, whose atomic number is 20?
  1. [math]1s^2 2s^2 2p^6 3s^2 3p^6 4s^2[/math]
  2. [math]1s^2 2s^2 2p^6 3s^2 3p^6 4s^3[/math]
  3. [math]1s^2 2s^2 2p^6 3s^1 3p^6 4s^2 3d^1[/math]
  4. [math]1s^2 2s^2 2p^6 3s^2 3d^8[/math]
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