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AS Level Chemistry 9701
Topic 1.1 Particles in the atom and atomic radius
17 August 2023
Slide 1 - Diapositive
We are learning to:
✅ explain that atoms are mostly empty spacesurrounding a very small, dense nucleus that contains protons and neutrons; electrons are found in shells in the empty space around the nucleus
✅ identify and describe protons, neutrons and electrons in terms of their relative charges and relative masses
define the terms atomic and proton number; mass and nucleon number
✅ describe the distribution of mass and charge within an atom
describe the behaviour of beams of protons, neutrons and electrons moving at the same velocity in an electric field
Slide 2 - Diapositive
We are learning to:
determine the numbers of protons, neutrons and electrons present in both atoms and ions given atomic or proton number, mass or nucleon number and charge
state and explain qualitatively the variations in atomic radius and ionic radius across a period and down a group
Slide 3 - Diapositive
We are learning to:
define the term isotope in terms of numbers of protons and neutrons
explain the notation for isotopes, where x is the mass or nucleon number and y is the atomic or proton number
state that and explain why isotopes of the same element have the same chemical properties
state that and explain why isotopes of the same element have different physical properties, limited to mass and density
Slide 4 - Diapositive
Review of previous learning
⚗️ Sketch two atoms that are considered isotopes
⚗️ Advance video viewing: Importance of isotopes
Slide 5 - Diapositive
Element Quiz 01
Instructions:
Fifteen elements will be shown.
Symbols or names shall be given.
Multiple choice or Short-answer.
Quizizz will be used for this activity.
Marks will be based on the number of correctly-named elements.
Slide 6 - Diapositive
Slide 7 - Vidéo
Particles' paths when the electric field is switched on
Slide 8 - Diapositive
Activity 5. The Numbers of Subatomic Particles
Instructions:
⚗️ Complete the worksheet AZPEN (Mass number, Atomic number, Proton number, Electron number, Neutron number).
⚗️ Share your work with the class. Mark your output.
