Topic 1: Atomic Structure
Specification points
Atoms, elements and compounds
· Use the names and symbols of the first 20 elements in the periodic table and the elements in Groups 1 and 7.
· Name compounds of these elements from given formulae or symbol equations.
Mixtures
· Describe, explain and give examples of the specified processes of separation.
· Suggest suitable separation and purification techniques for mixtures when given appropriate information.
The development of the model of the atom
· Describe why the new evidence from the scattering experiment led to a change in the atomic model.
· Describe the difference between the plum pudding model of the atom and the nuclear model of the atom.
Relative electrical charges of subatomic particles
· Use the nuclear model to describe atoms (relative charges and atomic number)
Size and mass of atoms
· Calculate the number of protons, neutrons and electrons in an atom or ion, given its atomic number and mass number.
· Relate size and scale of atoms to objects in the physical world.
Relative atomic mass
· Calculate the relative atomic mass of an element given the percentage abundance of its isotopes.
Electronic structure
· Draw a dot-and-cross diagram of the electronic structures for the first 20 elements and their ions.
· Work out the electronic configuration of the first 20 elements and their ions.
Keywords
Definitions
Atom
An atom is the smallest part of an element that can exist
Compound
Two or more different atoms chemically joined together
Element
Made up of one type of atom
Molecule
Two or more atoms chemically joined together
Mixture
Consists of two or more elements or compounds not chemically joined together
Atomic number/proton number
Number of protons an atom of an element contains
Relative atomic mass
Average mass of an element, taking into account the abundances of the isotopes of the element, compared to 1/12th of 12-C atom
Topic 2: The Periodic Table
Specification points
The Periodic Table
· Explain how the position of an element in the periodic table is related to the arrangement of electrons in its atoms and hence to its atomic number.
· Predict possible reactions and probable reactivity of elements from their positions in the periodic table.
Development of the Periodic Table
· Describe the steps in the development of the Periodic Table.
Metals and non-metals
· Explain the differences between metals and non-metals on the basis of their characteristic physical and chemical properties. This links to Group 0, Group 1, Group 7 and bonding, structure and the properties of matter.
· Explain how the atomic structure of metals and non-metals relates to their position in the periodic table.
· Explain how the reactions of elements are related to the arrangement of electrons in their atoms and hence to their atomic number.
Group 0, Group 1 and Group 7
· Explain how properties of the elements in Group 0, Group 1 and Group 7 depend in the outer shell of electrons of the atoms.
· Predict properties...
