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AS Level Chemistry All Answers Correct

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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...

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  • July 9, 2024
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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?

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