Atomic Structure and the Periodic Table

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Whole Topic PLC

State that everything is made of atoms and recall what they are
Describe what elements and compounds are
State that elements and compounds are represented by symbols; and use chemical symbols and formulae to represent elements and compounds
Write word equations and balanced symbol equations for chemical reactions, including using appropriate state symbols
HT ONLY: Write balanced half equations and ionic equations
Describe what a mixture is
Name and describe the physical processes used to separate mixtures and suggest suitable separation techniques
Describe how the atomic model has changed over time due to new experimental evidence, inc discovery of the atom and scattering experiments (inc the work of James Chadwick)
Describe the difference between the plum pudding model of the atom and the nuclear model of the atom
State the relative charge of protons, neutrons and electrons and describe the overall charge of an atom
State the relative masses of protons, neutrons and electrons and describe the distribution of mass in an atom
Calculate the number of protons, neutrons and electrons in an atom when given its atomic number and mass number
Describe isotopes as atoms of the same element with different numbers of neutrons
Define the term relative atomic mass and why it takes into account the abundance of isotopes of the element
Calculate the relative atomic mass of an element given the percentage abundance of its isotopes
Describe how electrons fill energy levels in atoms, and represent the electron structure of elements using diagrams and numbers
Recall how the elements in the periodic table are arranged
Describe how elements with similar properties are placed in the periodic table
Explain why elements in the same group have similar properties and how to use the periodic table to predict the reactivity of elements
Describe the early attempts to classify elements
Explain the creation and attributes of Mendeleev's periodic table
Identify metals and non-metals on the periodic table, compare and contrast their properties
Explain how the atomic structure of metals and non-metals relates to their position in the periodic table
Describe noble gases (group 0) and explain their lack of reactivity
Describe the properties of noble gases, including boiling points, predict trends down the group and describe how their properties depend on the outer shell of electrons
Describe the reactivity and properties of group 1 alkali metals with reference to their electron arrangement and predict their reactions
Describe the properties of group 7 halogens and how their properties relate to their electron arrangement, including trends in molecular mass, melting and boiling points and reactivity
Describe the reactions of group 7 halogens with metals and non-metals