Modified by M. Sparks 2015
Atomic Structure Atomic Mass/Number Ions/Charges of Molecules Isotopes/Perc ent Abundance
Question The subatomic particle discovered when Rutherford experimented with bombarding gold foil with positively charged alpha particles. The subatomic particle discovered when Rutherford experimented with bombarding gold foil with positively charged alpha particles.
Answer 1 – 10 Nucleus – positively charged (protons and neutrons) Nucleus – positively charged (protons and neutrons)
Question Rutherford concluded through his Gold Foil Experiment that the atom is made up of mostly……… Rutherford concluded through his Gold Foil Experiment that the atom is made up of mostly………
Answer 1 – 20 Empty Space Empty Space
Question Which subatomic particles are attracted to electrons? Which subatomic particles are attracted to electrons?
Answer 1 – 30 protons protons
Question An element contains atoms, isotopes, or ions that all have the same number of which subatomic particle? An element contains atoms, isotopes, or ions that all have the same number of which subatomic particle?
Answer 1 – 40 Protons Protons
Question What is the charge of electrons? What is the charge of electrons?
Answer 1 – 50 negative. negative.
Question The atomic number of an atom is equal to what? The atomic number of an atom is equal to what?
Answer 2 – 10 Protons Protons
Question Calculate the atomic mass of Oxygen with 10 neutrons. Calculate the atomic mass of Oxygen with 10 neutrons.
Answer 2 –
Question Element X has an atomic number of 15 and an atomic mass of 37. How many neutrons does element X have? Element X has an atomic number of 15 and an atomic mass of 37. How many neutrons does element X have?
Answer 2 –
Question What is the charge of protons? What is the charge of protons?
Answer 2 – 40 negative negative
Question What is the atomic number of Calcium? If Calcium has 24 neutrons, what is its atomic mass? What is the atomic number of Calcium? If Calcium has 24 neutrons, what is its atomic mass?
Answer 2 – 50 The atomic number is 20, and its mass is 44. The atomic number is 20, and its mass is 44.
Question Define an ion. Define an ion.
Answer 3 – 10 An atom with a net positive or negative charge. An atom with a net positive or negative charge.
Question What is the difference between anions and cations? What is the difference between anions and cations?
Answer 3 – 20 Anions have a negative charge and cations have a positive charge. Anions have a negative charge and cations have a positive charge.
Question What two subatomic particles must be equal in order to create a neutral atom? What two subatomic particles must be equal in order to create a neutral atom?
Answer 3 – 30 Protons and Electrons Protons and Electrons
Question How many electrons are in S -2 ? How many electrons are in S -2 ?
Answer 3 – electrons 18 electrons
Question Which atom has more electrons? Mg +1 or O -2 ? Which atom has more electrons? Mg +1 or O -2 ?
Answer 3 – 50 Mg +1 Mg +1
Question Define isotope Define isotope
Answer 4 – 10 Atoms of the same element with different numbers of neutrons resulting in different atomic masses. Atoms of the same element with different numbers of neutrons resulting in different atomic masses.
Question How many neutrons are in a Carbon isotope with a mass of 20? How many neutrons are in a Carbon isotope with a mass of 20?
Answer 4 – 20 8 neutrons 8 neutrons
Question The atomic mass is equal to….. The atomic mass is equal to…..
Answer 4 – 30 Protons + neutrons Protons + neutrons
Question What happens to the atomic mass if you increase the number of neutrons (this would be an isotope of an atom)? What happens to the atomic mass if you increase the number of neutrons (this would be an isotope of an atom)?
Answer 4 – 40 The atomic mass increases The atomic mass increases
Question What has changed about an atom if the number of protons has changed? What has changed about an atom if the number of protons has changed?
Answer 4 – 50 The identify of the atom…..new element! The identify of the atom…..new element!