OCR Unit 1 - Atomic Structure and Periodic Table PDF

**Topic** **Unit 1 - Atomic structure and the periodic table**...

**Topic** **Unit 1 - Atomic structure and the periodic table** **R** **A** **G** ----------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ------- ------- ------- **4.1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes** 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       **4.1.2 The periodic table** 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 Nobel 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       *[Chem ONLY] : Describe the properties of transition metals and compare them with group 1 elements, including melting points and densities, strength and hardness, and reactivity (for CR, Mn Fe, Co, Ni & Cu)*