This PowerPoint presentation with worked examples and student activities covers: Topic 6.1 of Module 1: Science Fundamentals of the OCR Applied Science Spec. • Interpreting laboratory tests for stress-strain graphs and Young’s modulus • Awareness that repeated loading cycles may cause failure by fatigue below the yield strength • Use of diagrams to understand that the way molecules are arranged in polymers determines the properties: chain length, crosslinking, use of plasticizers and crystallinity. • Use and rearranging of the density equation.

This PowerPoint presentation with worked examples and student questions covers: • Definition of technique for paper chromatography • Experimental procedure • Definitions of stationary and mobile phase • Application of Rf equation with examples and answers

This PowerPoint presentation with worked examples and student questions covers: • Changes of state • The technique of simple distillation • Concentration of solute increasing in distillation • Jobs related to chemistry • Key word test Insoluble, Soluble, Solvent, Solute, Solution, Distillation, Filtration, and Crystallisation

This PowerPoint presentation with worked examples and student questions covers: Definitions for solution, solute, solvent, insoluble, soluble. The technique of filtration The technique of crystallisation

This PowerPoint presentation with worked examples and student questions covers: Definitions of pure and impure substances Definition of an alloy Identification of purity with melting points Plotting graphs and data analysis

This PowerPoint presentation with worked examples and student activities covers: Topic 2.2 of Module 1: Science Fundementals of the OCR Applied Science Spec. Oxidation and reduction (redox) reactions Addition reactions of alkenes to include full balanced symbol equations Substitution reactions of alkanes and haloalkanes to include full balanced equations Addition polymerisation to include identification of monomers and repeating units Condensation polymerisation to include identification of monomers and repeating units Definition of a radical The role played by UV light in producing chlorine radicals from CFCs in the depletion of the ozone layer Equations to show how chlorine radicals can destroy many ozone molecules Displacement reactions to include full balanced equations for metals and halogens.

This PowerPoint presentation with worked examples and student activities covers: Topic 2.1 of Science Fundementals of the OCR Applied Science Spec. Types of mixtures to include solutions, colloids and suspensions Difference between colloids and suspensions in terms of particle size Uses of common colloids in nature and medicine Types of colloids to include aerosols, emulsions, foams, gels and sols Significance of colloids in nature and medicine Alloys as mixtures of metals The character and features of alloys Uses of common alloys to include amalgam, solder, bronze, titanium alloy

This PowerPoint presentation with worked examples and student activities covers: Topic 1.3 of Science Fundementals of the OCR Applied Science Spec. Elements react together to form compounds by i.e. ionic bonding covalent bonding

This PowerPoint presentation with worked examples and student activities covers: Topic 1.2 of Science Fundementals of the OCR Applied Science Spec. Elements are based on atomic structure and can be classified by the Periodic Table i.e.: organisation of elements within the table groups periods atomic number atomic mass atomic radius

This PowerPoint presentation with worked examples and student activities covers: Topic 1.1 of Science Fundementals of the OCR Applied Science Spec. nucleus contains protons and neutrons surrounded by electrons relative masses and charges nuclear and atomic diameters nucleon number, proton number and isotopes proton number defines the type of atom nuclear notation attractive and repulsive forces within the nucleus

This PowerPoint presentation with worked examples and student questions covers: • Calculate empirical formula and by finding the simplest whole-number ratio • Calculate relative formula mass from balanced equations.

This PowerPoint presentation with worked examples and student questions covers: • Relative atomic mass • Understanding chemical formulas • Relative formula mass

This PowerPoint presentation with worked examples and student questions covers: • Dalton, Thomson, Rutherford and Bohr’s models • Comparing different scientific models of the atom

This PowerPoint presentation with worked examples and student questions covers: • Definitions of elements, isotopes, and ions • State mass number, atomic number, and chemical symbols • Calculate the number of neutrons

This PowerPoint presentation with worked examples and student questions covers: • Scientific models as a concept • Structure of the atom • Relative mass and charge of subatomic particles • Bond length of atoms and molecules

This PowerPoint presentation with worked examples and student questions covers: • Describing the limitations of the model: lack of forces between particles, size of particles, and space between the particles. • Mathematically comparing sizes and distances of particles

This PowerPoint presentation with worked examples and student questions covers: • Differences between physical and chemical changes • Explain why physical changes are generally easier to reverse