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Tenth Grade (Grade 10) Atomic Structure Questions

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Grade 10 Atomic Structure
Which two orbitals have the same shape?
  1. 2s and 2p
  2. 2s and 3s
  3. 3p and 3d
Grade 10 Atomic Structure
One of the deductions from Rutherford’s alpha scattering experiment is that                                       .
  1. electrons are negatively charged
  2. nuclei of atoms are positively charged
  3. electrons are negligible mass
  4. protons are positively charged
Grade 10 Atomic Structure
Which subatomic particle is correctly matched with its charge?
  1. proton - charge of 0
  2. neutron - charge of -1
  3. electron - charge of +1
  4. electron - charge of -1
Grade 10 Atomic Structure
Which of the following conclusions is consistent with the results of the gold foil experiment?
  1. The nucleus has a positive charge of 4.
  2. The atom consists of a dense, positively-charged nucleus and an empty surrounding space.
  3. The atom has an overall positive charge.
  4. The atom consists of electrons and protons.
Grade 10 Atomic Structure
Two naturally occurring isotopes of oxygen are O-16 and O-17. Which of the following statements is correct?
  1. Both isotopes react with iron to form rust.
  2. Neither isotope reacts with iron to form rust.
  3. Only O-16 reacts with iron to form rust.
  4. Only O-17 reacts with iron to form rust.
Grade 10 Atomic Structure
In the modern-day model of an atom, what is the importance of the orbital?
  1. It is the region in which a positron can most likely be located.
  2. It is the most likely charge of an electron.
  3. It is the region in which neutrons can most likely be found.
  4. It is the region in which electrons can most likely be found.
Grade 10 Atomic Structure
An element has an atomic mass of 355.5 amu. Its isotopes have mass numbers of 355 and 356. Which statement is true about the isotopes of the element?
  1. The isotope with a mass number of 355 is more abundant.
  2. The isotope with a mass number of 356 is more abundant.
  3. The isotopes have an equivalent abundance.
  4. An isotope with a mass number of 357 is more abundant.
Grade 10 Atomic Structure
Grade 10 Atomic Structure
Grade 10 Atomic Structure
Which of the following was observed in Thomson's experiments with cathodes and anodes?
  1. The cathode rays moved towards the cathode, so they consisted of negatively-charged particles.
  2. The cathode rays moved towards the anode, so they consisted of negatively-charged particles.
  3. The cathode rays moved towards the cathode, so they consisted of positively-charged particles.
  4. The cathode rays moved towards the anode, so they consisted of positively-charged particles.
Grade 10 Atomic Structure
Which statement correctly identifies the subatomic particles located in the nucleus of a sulfur atom?
  1. Neutrons and Protons
  2. Electrons and Protons
  3. Protons, only
  4. Electrons, only
Grade 10 Atomic Structure
Grade 10 Atomic Structure

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Grade 10 Atomic Structure
Why did most of the alpha particles go straight through the gold foil in Rutherford's experiment?
  1. Most of an atom is empty space.
  2. Alpha particles are positively charged.
  3. Alpha particles move with high velocity.
  4. The center of an atom is positively charged.
Grade 10 Atomic Structure

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