Review: Atom Models to Particles in Atom

How many protons does an atom of Palladium (Pd) contain?

• 15

• 31

• 46

• 60

Which of the following particles are considered the largest?

• Neutron

• Proton

• Quarks

• Electron

Lucas found an unknown substance. After using the electron microscope and running some tests, he found the atoms in the unknown substance were neutral and contained 17 electrons per atom. How many protons should the atom have?

• 16, the number of protons is always one less than the number of electrons

• 17, the number of electrons should equal the number of protons in a neutral atom.

• 34, the number of electrons is always half of the number of protons

• The number of protons cannot be determined from the information given.

Juan ran tests on a substance he discovered. He found each atom in the substance contained 34 protons. What can he conclude about the identity of the substance?

• The identity cannot be determined with the information given

• It's either Lithium (Li) or Beryllium (Be)

• It's Chlorine (Cl)

• It's selenium (Se)

Estimate the number of neutrons found in an atom of argon.

• 18

• 39.9

• 21.948

• 22

Which of the following is NOT an orbital electrons can reside in?

• s

• p

• d

• a

Which of the following correctly describes the p orbital?

• 
• 
• 
• 

Which of the following does NOT match our modern day understanding of the atom?

• A nucleus in the center, electrons organized in orbitals in the empty space outside the atom

• 
• Protons and Neutrons are glued together to make the nucleus

• The quantums of energy an electron holds determines which orbital it will reside in

An atom of Zinc (Zn) contains ______ _______ electrons.

• 30, positive

• 30, negative

• 65, negative

• 35, neutral

Which of the following is the force responsible for gluing protons and neutrons together to create a nucleus?

• Weak Force

• Gravity

• Electromagnetic Force

• Strong Force