This Worksheet gives a detailed explanation on limiting reagents and how to calculate it. There are some exam type questions included too. Students can use this to supplement their learning and test whether they understand the concept of limiting reagents. An example of a question is shown below: RDX is one of the most powerful explosives known today. It is used in mines, depth charges and torpedo warheads. It can be made by the following process. C6H12N4 + 3HNO3 -> C3H6O6N6 + 3HCHO + NH3 If we take 1 kg of HMTA and 900 g , what is the theoretical yield of RDX? We hope you enjoy this resource Kind Regards ENTER - ONE

This test can be used as a summative or formative assessment. To generate the question paper, simply delete the answers written in red. Topics covered include: Reaction co-ordinate diagrams Collision Theory Chemical reaction rates Equilibrium & Le Chateliers Principle Equilibrium constant Application of the Ostwald process and optimisation Yield calculations Haber process Biodiesel manufacturing We hope you enjoy using this resource. Kind Regards ENTER - ONE

In this Powerpoint, we cover changing formula and changing the subject of the formula. Many examples are shown, and sufficient exercises for students to try out. There will be no need to work out answers, as the answers are given. Simply project this Powerpoint. Kind Regards ENTER - ONE

This powerpoint includes the course on trigonmetric transformations and applications. Topics covered include: Trigonometric functions and their graphs Radian to degree conversions and vice versa Zeros, amplitude, centre line, maximum, minimum, domain, range and period. General equation of trigonometric functions Stretches/compressions vertically and horizontally, reflections, translations and image points. Applications of the functions All the theory, notes, questions and answers are included in the powerpoint. Thus there is no additional work for the teacher to do. Simply project this Powerpoint and you’re done. Kind Regards ENTER - ONE

In this Powerpoint, we cover further investigations into rational functions. Topics covered include: Horizontal, vertical and oblique asymptotes Long division Degree of functions using m and n values to find asymptotes Other characteristics of rational functions and their behaviour Graphing rational functions This is powerpoint 2 of 2. Simply project this powerpoint in class. There is no additional work for the teacher. We hope you enjoy using this resource. Kind Regards ENTER - ONE

In this unit, we focus on the theory of rational functions. Topics covered include: Finding reciprocals Sketching graphs of functions and their reciprocals Finding and sketching asymptotes Invariant points Domain and range X and Y intercepts This powerpoint contains the first half of the unit on rational functions. All the theory, examples, questions and answers have been included. There is no work for the teacher. All the answers have been done. Simply project this Powerpoint in your class. Kind Regards ENTER - ONE

In this Powerpoint, we cover theory on Proportionality. Topics include: Direct proportionality Inverse proportionality Equations Rate constant Graphs of both direct and inverse proportionality Dependent and independent variables Finding the unit rate Questions and answers This Powerpoint covers the topics mentioned above in depth, along with some challenging examples for higher level students. We hope you enjoy it. Kind Regards ENTER - ONE

This presentation is aimed at a higher level Grade 7/8 class. Knowledge of Integer rules and order of operations as well as square numbers needs to be known. This worksheet will prove challenging to students. Use it to test their knowledge and offer up some challenge to those who tend to get bored in class! Detailed answers are already included, so theres no need for you to work out the answers on your own! We hope you enjoy this resource Kind Regards ENTER - ONE

This Powerpoint covers Theory on Radicals and simplification of radicals. Topics include: Writing radicals and surds Addition subtraction multiplication and division Writing with integer radicals Rationalizing the denominator General algebraic simplification Each slide contains questions and the following slide contains the answers written in red. So for teachers, there is no need to do the answers on your own. At the end are some practice questions for students to try out as a test. We hope you enjoy this resource. Kind Regards ENTER - ONE

This Powerpoint is the ultimate guide to solving and proving trigonometric identities. It covers a wide range of topics: General identities and proofs Use of theorems to prove functions (Pythagorean identities, double angle, sum and difference, reciprocal identities) Solving trigonometric equations given a domain The solutions written out here are extremely detailed which helps students identifiy how the equation was solved, and allows them to become more confident when dealing with this challenging topic. We hope you enjoy using it Kind Regards ENTER - ONE

In this Powerpoint, we cover questions and answers from a variety of different past papers. The answers are given in detail. Use this resource as a supplement in your chemistry class. These questions can be used to review particular topics, given as a formative/summative assessment, or an in class assignment. Topics covered include: Electrochemistry Percetage conversions Chemical equations and concentration calculations. (Yield) Chemical Kinetics Equilibrium reactions Chemical bonding Electronic configuration Thermodynamics Organic Chemistry Column separations Polymers Industrial chemistry …& so much more. Here are some typical questions you will find: QUESTION 6 Acid rain has a pH that is low enough to cause environmental damage. (a) NO2 is an atmospheric pollutant that reacts with rainwater to form acid rain. (i)(1) Write an equation for the reaction of NO2 with rainwater. 2NO2 + H2O → HNO2 + HNO3 (2) Hence, explain why the pH of acid rain is lower than that of rainwater. •ionises completely in water •acid has formed •HNO3 → NO3- + H+ •[H+] increases so pH decreases (ii) Identify another atmospheric pollutant that can contribute to the formation of acid rain. SO2, SO3 NO We hope you use this resource to aid your learning and teaching Kind Regards ENTER - ONE

In this Powerpoint, we cover the theory, questions and answers on Rates of chemical reactions. Topics include: General reaction rates Graphical analysis of rates of reactions Measuring rates of reactions experimentally Thermodynamics Energy diagrams Collision Theory Factors that affect the reaction rate

This Powerpoint is the ultimate guide to Equilibrium and Yield. It contains all the theory, examples, questions and answers that you will need. Topics covered include: Reversible and irreversible reactions Equilibrium and rates Graphical interpretations of Equilibrium & rates Equilibrium positions Equilibrium constant Kc Le Chateliers Principle Pressure, Temperature & Concetration effects on Equilibrium Catalyst Yield Calculations This Guide contains many real world application problems on equilibrium This will be the only guide you will ever need! Kind Regards ENTER - ONE

In this Powerpoint, we cover applications and optimisation of technological processes within the chemical industry. Topics covered include: Raw Materials, waste products and catalysts Contact Process Haber Process Yield Reaction conditions Reaction flow charts This Powerpoint contains all the theory, examples, questions and answers. There is no extra work to be done. Simply project this in your class and you’re good to go! Enjoy this resource. Kind Regards ENTER - ONE

This Powerpoint covers the chemistry on soil Topics include: Composition of soils Nutrients in soil and concentrations Nitrogen cycle Ammonification Nitrification Fertilizers Eutrophication This resource contains all the theory, questions and answers. There are numerous application questions with the answers provided. Kind Regards ENTER - ONE

This resource contains the second part to managing energy resources Topics Covered include: Combustion reactions Molar Enthalpy calculations Calorimetry Reaction diagrams and energy calculations Alternative sources of energy (photovoltaic cells, proton exchange membrane) Electrochemistry Vanadium flow battery There are many real world application examples here. Kind Regards ENTER - ONE

This Powerpoint covers lessons on Managing energy resources Topics covered include: Carbon Cycle Fossil Fuels Different energy resources - advantages and disadvantages Case studies Forms of energy (Hydro solar wind nuclear) Biodiesel Thermchemistry Combustion reactions Pollution We hope you enjoy using this resouce. Kind Regards ENTER - ONE

This resource is a formative/summative assessment Total marks is 80 Topics covered include: Number concepts (multiples, factors, prime factorization) Roots, squares and cubes Substitution Algebraic simplification Advanced algebraic simplification The answers are included. In order to generate the question paper, simply delete the answers in red We hope you enjoy this assessment Kind Regards ENTER - ONE

This resource is a formative/summative assessment. Total marks is 50 Topics covered include: Probability Possibility diagrams Sequences and series Venn Diagram Linear Algebra and co-ordinate geometry Algebraic manipulation Pythagoras Theorem Kind Regards ENTER - ONE

This resource is a formative/summative assessment. Total marks is 40 Topics covered include: Number concepts (Lowest common multiple, factors, highest common factor, prime numbers) Algebraic expressions Lines shapes and angles The answers are included in this assessment. To generate the question paper, simply delete the answers in red. We hope you enjoy this resource. Kind Regards ENTER - ONE