Reinforcement exam style question to revise the blood and circulation .

Cambridge Checkpoint ( Lower secondary) -Science (0893) with answers. The exam style questions are based on new specification -2020. THe questions are related with: Biology Chemistry Physics 10 practice questions with answers

Cambridge Checkpoint ( Lower secondary) -Science (0893) with answers. The exam style questions are based on new specification -2020. THe questions are related with: Biology Chemistry Physics 10 practice questions with answers

The alternative to practical support guide provide enough practical knowledge for the : Practical test Alternative to practical paper

This booklet covers the following sub topics according to the specification: Movement and position ( with exam style worked examples) The relationships with speed, distance, time , displacement, velocity and acceleration. The motion graphs ** Forces, stopping distance, changing the shape , momentum and moment (with exam style** worked examples) The relationship with force , mass and acceleration and related graphs Stopping distance and controlling speed Changing the shape of wires and helical springs Momentum and car safety Moment

The lesson notes provide the knowledge on following sub topics. Physical quantities and vector and scalar quantities. The relationships with speed, distance, time , displacement, velocity and acceleration. The motion graphs Motion in a circular path *Forces, stopping distance and momentum (with exam style worked examples) The relationship with force , mass and acceleration and related graphs Stopping distance and controlling speed Momentum and car safety

The notes include the followings: • Definitions and concept of synthetic polymers • Addition polymers • Drawing the repeat unit of an addition polymer, including poly(ethene), poly(propene), poly(chloroethene) and (poly)tetrafluoroethene • Deducing the structure of a monomer from the repeat unit of an addition polymer • Explaining problems in the disposal of addition polymers, including:their inertness and inability to biodegrade and the production of toxic gases when they are burned. • Condensation polymerisation, in which a dicarboxylic acid reacts with a diol, produces a polyester and water • Writing the structural and displayed formula of a polyester, showing the repeat unit, given the formulae of the monomers from which it is formed including the reaction of ethanedioic acid and ethanediol • Learning about biopolyesters

The lesson note covers : Properties of alcohols Naming of alcohols Isomers Chemical reactions of alcohols Manufacturing ethanol Uses of alcohols

The complete revision lesson notes are included: Alkanes Properties of alkanes Uses of alkanes Members of the alkane homologous series Naming alkanes Isomers of alkanes chemical reactions of alkanes Alkenes Properties of alkenes uses of alkenes Members of the alkene homologous series Naming alkenes Isomers of alkenes Chemical reactions of alkenes

This booklet covers the following topics 1 . writing Formulae , word equation, symbol equation and ionic equations 2.Calculating relative formula mass(molar mass) and percentage by mass 3.Calculating moles, molecules , atoms and mass of chemical compound 4.Calculating the moles and volume of gases 5.Calculating the concentration , moles and volume of solutions 6. Calculating the moles, molecules and atoms ( calculations with Avogadro Constant) 7.Calculating empirical formula and molecular formula. 8. Percentage purity and percentage yield 9. Calculating of reacting masses , excess and limiting reagents and prediction of the quantity of reactants and masses 10.Calculations problems related with titrations 11. Atom economy 12. Answers

This booklet covers the following topics 1 . writing Formulae , word equation, symbol equation and ionic equations 2.Calculating relative formula mass(molar mass) and percentage by mass 3.Calculating moles, molecules , atoms and mass of chemical compound 4.Calculating the moles and volume of gases 5.Calculating the concentration , moles and volume of solutions 6. Calculating the moles, molecules and atoms ( calculations with Avogadro Constant) 7.Calculating empirical formula and molecular formula. 8. Percentage purity and percentage yield 9. Calculating of reacting masses , excess and limiting reagents and prediction of the quantity of reactants and masses 10.Calculations problems related with titrations 11. Answers

The booklet is based on new specifications with sufficient practice questions to enhance the application knowledge of students. The booklet covers the followings: This booklet covers the following topics 1 . writing Formulae , word equation, symbol equation and ionic equations 2.Calculating relative formula mass(molar mass) and percentage by mass 3.Calculating moles, molecules , atoms and mass of chemical compound 4.Calculating the moles and volume of gases 5.Calculating the concentration , moles and volume of solutions 6. Calculating the moles, molecules and atoms ( calculations with Avogadro Constant) 7.Calculating empirical formula and molecular formula. 8. Percentage purity and percentage yield 9. Calculating of reacting masses , excess and limiting reagents and prediction of the quantity of reactants and masses 10.Calculations problems related with titrations 11. Answers

The practice mole workbook is based on the Cambridge O/L new syllabus covering up the following areas. 1 . writing Formulae , word equation, symbol equation and ionic equations 2.Calculating relative formula mass(molar mass) and percentage by mass 3.Calculating moles, molecules , atoms and mass of chemical compound 4.Calculating the moles and volume of gases 5.Calculating the concentration , moles and volume of solutions 6. Calculating the moles, molecules and atoms ( calculations with Avogadro Constant) 7.Calculating empirical formula and molecular formula. 8. Percentage purity and percentage yield 9. Calculating of reacting masses , excess and limiting reagents and prediction of the quantity of reactants and masses 10. Calculations problems related with titrations 11. Answers

Revision note for international IGCSE students

The concise summary of mole concept for Cambridge students in according to the specification.

The summary of convex lens ray diagrams and properties for Cambridge IGCSE and O/L students.

Collection of past paper question for Cambridge IGCSE and Cambridge O/Level students.

The reinforcement exam style revision questions are based on new specification and are included addition and condensation polymers.

The reinforcement worksheet is based on new specification and the topics homologous series, naming and formulae of basic concepts of organic chemistry are included . The chapter crude oil and cracking and fractional distillation of crude oil is added to the introduction because most of questions are linked between two chapters.

The reinforcement worksheets with exam style questions to practice naming, chemical reactions and addition reactions.