subatomic parts

• What are the parts of an atom?

  Protons, neutrons, and electrons
• What is the current model of an atom called?

  Quantum mechanical model
• How are the electrons arranged in the current model?

  In energy levels or shells around the nucleus
• What is the only particle found in the plum pudding model of an atom?

  Electrons
• How big is an atom?

  About $1 \times 10^{-10} \text{ m}$
• Where are all three sub-atomic particles found inside the atom?

  Protons and neutrons in the nucleus, electrons outside
• What do we know about the size of an atom?

  It is approximately $1 \times 10^{-10} \text{ m}$
• What do we know about the size of the nucleus?

  It is about $1 \times 10^{-14} \text{ m}$
• What is the relative mass of a proton?

  1
• What is the relative mass of a neutron?

  1
• What is the relative mass of an electron?

  Very small
• What is the relative charge of a proton?

  +1
• What is the relative charge of a neutron?

  0
• What is the relative charge of an electron?

  • 1
• What is the mass number of chlorine-35?

  35
• What is the atomic number of chlorine-35?

  17
• How do you calculate the number of neutrons in chlorine-35?

  Mass number - Atomic number
• How many neutrons are in chlorine-35?

  18
• How many electrons are in chlorine-35?

  17
• Why does chlorine-35 have 17 electrons?

  Atoms are neutral, equal protons and electrons
• What is the atomic number of hydrogen?

  1
• What is the atomic number of carbon?

  6
• What is the atomic number of sodium?

  11
• What is the mass number of an atom?

  Total number of protons and neutrons
• What are isotopes?

  Atoms of the same element with different neutrons
• What does relative abundance refer to?

  Amount of each isotope as a percentage
• How do you draw isotopes of chlorine?

  • Chlorine-35: 17 protons, 18 neutrons
  • Chlorine-37: 17 protons, 20 neutrons
• How do you draw isotopes of carbon?

  • Carbon-12: 6 protons, 6 neutrons
  • Carbon-13: 6 protons, 7 neutrons
  • Carbon-14: 6 protons, 8 neutrons