P1 Atomic structure

• What are the 3 subatomic particles atoms are made up of?

  1.)Protons

  2.)Neutrons

  3.)Electrons
• What is the nucleus of an atom made up of?

  1.)Protons

  2.)Neutrons
• 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?

  0
• What is the charge of a proton?

  1+
• What is the charge of a neutron?

  0
• What is the charge of an electron?

  1-
• What is the radius of an atom?

  0.1 nm
• What is the overall charge of an atom?

  Neutral (0)
• What happens when an atom loses or gains electrons?

  The charges will no longer balance and the overall atom would become charged
• What do we call an atom that has become charged?

  An ion
• If an ion has more electrons than protons what is its overall charge?

  Negative
• If an ion has less electrons than protons what is its overall charge?

  Positive
• What is the atomic number?

  The number on the bottom that is the number of protons
• What is the mass number?

  The number on the top that is the number of protons and neutrons added
• How do you work out the number of neutrons an atoms has based on its mass number?

  Subtract the atomic number (number of protons) from the mass number to get the number of neutrons
• How do we tell what element an element in the periodic table is?

  By the number of protons
• What is the smallest element in the periodic table and why?

  Hydrogen as it has one proton and one electron
• What is each box in the periodic table called?

  A nuclear symbol
• What is an isotope?

  A different form of the same element with the same number of protons but a different number of neutrons
• What is relative atomic mass?

  The average mass of all the isotopes that make an element
• What is meant by the term isotope abundance?

  How common or rare a isotope is
• How do you calculate relative atomic mass?

  Sum of ( isotope abundance × Isotope mass ) ÷ sum of abundance of all the isotopes