AS Level Chemistry All Answers Correct
1. Atomic Number:
- What indicates the number of protons in an element?
- Answer: Atomic number
2. Mass Number:
- What is the term for the total number of protons and neutrons in an atom's nucleus?
- Answer: Mass number
3. Ion:
- What is an electrically charged particle that results from the loss or gain of electrons?
- Answer: Ion
4. Relative Masses of Protons, Neutrons, and Electrons:
, - What are the relative masses of protons, neutrons, and electrons?
- Answer: 1, 1, and 1/2000, respectively
5. Isotopes:
- What are atoms called that have the same number of protons but different numbers of neutrons?
- Answer: Isotopes
6. Steps of Mass Spectroscopy:
- What are the steps involved in mass spectroscopy?
- Answer: Ionization, Acceleration, Deflection, Detection
7. Ionization:
- What happens during the ionization step in mass spectroscopy?
- Answer: A gaseous sample is bombarded with high-energy electrons to form 1+ ions
,8. Acceleration:
- What occurs during the acceleration phase of mass spectroscopy?
- Answer: Ions are accelerated through an electric or magnetic field
9. Deflection:
- What happens to ions during the deflection step in mass spectroscopy?
- Answer: Ions are deflected in a magnetic field according to their mass, with heavier ions deflecting
the least and lighter ions deflecting the most
10. Detection:
- What role does detection play in mass spectroscopy?
- Answer: A calibrated detector records the degree of deflection and translates it into mass
information
, 11. Mass Spectroscopy Information:
- What does mass spectroscopy reveal?
- Answer: It provides data about the masses of particles and their frequency of detection within the
machine
12. Mass Spectrum:
- What is displayed on a mass spectrum?
- Answer: It shows the relative abundance of different isotopes and the molecular peak, which is the
farthest to the right
13. Molecular Ion Peak:
- What does the molecular ion peak represent?
1. Atomic Number:
- What indicates the number of protons in an element?
- Answer: Atomic number
2. Mass Number:
- What is the term for the total number of protons and neutrons in an atom's nucleus?
- Answer: Mass number
3. Ion:
- What is an electrically charged particle that results from the loss or gain of electrons?
- Answer: Ion
4. Relative Masses of Protons, Neutrons, and Electrons:
, - What are the relative masses of protons, neutrons, and electrons?
- Answer: 1, 1, and 1/2000, respectively
5. Isotopes:
- What are atoms called that have the same number of protons but different numbers of neutrons?
- Answer: Isotopes
6. Steps of Mass Spectroscopy:
- What are the steps involved in mass spectroscopy?
- Answer: Ionization, Acceleration, Deflection, Detection
7. Ionization:
- What happens during the ionization step in mass spectroscopy?
- Answer: A gaseous sample is bombarded with high-energy electrons to form 1+ ions
,8. Acceleration:
- What occurs during the acceleration phase of mass spectroscopy?
- Answer: Ions are accelerated through an electric or magnetic field
9. Deflection:
- What happens to ions during the deflection step in mass spectroscopy?
- Answer: Ions are deflected in a magnetic field according to their mass, with heavier ions deflecting
the least and lighter ions deflecting the most
10. Detection:
- What role does detection play in mass spectroscopy?
- Answer: A calibrated detector records the degree of deflection and translates it into mass
information
, 11. Mass Spectroscopy Information:
- What does mass spectroscopy reveal?
- Answer: It provides data about the masses of particles and their frequency of detection within the
machine
12. Mass Spectrum:
- What is displayed on a mass spectrum?
- Answer: It shows the relative abundance of different isotopes and the molecular peak, which is the
farthest to the right
13. Molecular Ion Peak:
- What does the molecular ion peak represent?
