The worksheet can be used to test understanding of basic concepts of chemical bonding such as- -Electronic configuration of elements. - Writing formula of ionic and covalent compounds. - Drawing lewis structures of ionic and covalent compounds (examples explained). - Properties of ionic and covalent compounds

Section -A MCQ’s and Section B- Structured Questions Content- Reversible Reactions Reversible Arrows Dynamic Equilibrium Le Chattelier’s Principle Shifting of Equilibrium Effect of Temperature Effect of Pressure Weak Electrolytes Haber’s Process (Reversible reaction only) Contact Process (Reversible reaction only)

Time- 1 Hr Section -A MCQ’s Section B- Structured Questions Content- • Magnetic Effect • Electromagnets • Current carrying wires and force • Magnetic compass • AC current • AC generator • Motor • Electromagnetic Spectrum

Revision Test- IGCSE Physics – Current Electricity Time-1.5 Hrs. Section -A MCQ’s Section B- Structured Questions Content-  Circuits  Current  Potential  Resistance  Circuit elements  Ohms Law  Series  Parallel Electrical Energy Power

The resource is a practice worksheet to check students understanding of the mole calculations involving calculations related to molar mass, molar volumes, limiting reagent on IGCSE chemistry pattern

This worksheet for checking understanding of core concepts such as acid base nature, strong and weak acid, pH and tests for acid and base.

This resource I use to teach my IB and A Level Students about moles and stoichiometric relationships. Contents- States of Matter Laws of Chemical Combination Naming of Ionic and Covalent Compounds Valencies of common ions Mole Concept • The mole is a fixed number of particles and refers to the amount, n, of substance. • Masses of atoms are compared on a scale relative to 12C and are expressed as relative atomic mass (Ar) and relative formula/molecular mass (Mr). • Molar mass (M) has the units g mol-1. • The empirical formula and molecular formula of a compound give the simplest ratio and the actual number of atoms present in a molecule respectively. • Calculation of the molar masses of atoms, ions, molecules and formula units. • Solution of problems involving the relationships between the number of particles, the amount of substance in moles and the mass in grams. • Interconversion of the percentage composition by mass and the empirical formula. • Determination of the molecular formula of a compound from its empirical formula and molar mass. • Obtaining and using experimental data for deriving empirical formulas from reactions involving mass changes.

The power point is a highly appreciated school assembly which I prepared that has following contents- Moral Value- Courage -Festivals of International Importance (Global World) -Thought of the week -Innovation -Fun facts -Water Conservation Campaign

Section -A MCQ’s and Section B- Structured Questions Time -1 Hr Content-  Sound  Longitudinal sound waves  Compressions  Rarefactions  Pitch  Loudness  Amplitude  Echo  Speed of sound

Revision Test- IGCSE Physics – Waves Time-1 Hr. Section -A MCQ’s and Section B- Structured Questions Contents-  Wave  Wave fronts  Diffraction  Dispersion  Frequency  Wavelength  Time period  Amplitude

Revision Test- IGCSE Metals Time-1.5 Hr. Section -A MCQ’s and Section B- Structured Questions Content- Metals Reactivity Series Chemical reactions of metals Displacement Reactions Extraction of Fe Extraction of Al Extraction of Zn Uses of Metals Alloys Corrosion Recycling of metals

IB SL /AS level / Edexcel -Energetics (Hess Law and Enthalpy) Includes- MCQ’s and Theory questions Questions and Marking Scheme Content Tested- Exothermic Endothermic Activation Energy Enthalpy Lattice Enthalpy Hess Law Standard Enthalpy of Formation Standard Enthalpy of Combustion Standard Enthalpy of Reaction

Section -A MCQ’s and Section B- Structured Questions Content- • Circuits • Logic Gates • Switches • Transformer • Step Up • Step Down • Relay Switches • Resistors • Bulbs • Diodes • Digital Displays

This is an excellent resource for teaching IB and A level Class about periodic table and periodic properties. Contents- • The periodic table is arranged into four blocks associated with the four sub-levels—s, p, d, and f. • The periodic table consists of groups (vertical columns) and periods (horizontal rows). • The period number (n) is the outer energy level that is occupied by electrons. • The number of the principal energy level and the number of the valence electrons in an atom can be deduced from its position on the periodic table. • The periodic table shows the positions of metals, non-metals and metalloids. • Deduction of the electron configuration of an atom from the element’s position on the periodic table, and vice versa. Transition elements have variable oxidation states, form complex ions with ligands, have coloured compounds, and display catalytic and magnetic properties. • Zn is not considered to be a transition element as it does not form ions with incomplete d-orbitals. • Transition elements show an oxidation state of +2 when the s-electrons are removed. • Explanation of the ability of transition metals to form variable oxidation states from successive ionization energies. • Explanation of the nature of the coordinate bond within a complex ion. • Deduction of the total charge given the formula of the ion and ligands present. • Explanation of the magnetic properties in transition metals in terms of unpaired electrons.

This is an excellent resource for IBDP HL/SL complete lesson . Contents Measuring Energy Changes Enthalpy Types of Enthalpy Bond Energy Entropy Free Energy Calorimetry

Moles and Mole concept Interactive Lesson Power Point Contents- Why Moles What is Moles Hands on Activity with Pomogranate Analysis and evaluation of 6.02 x 10^23 Comparison of Mole with other units How moles make chemistry easy Important formula and their application in calculating Moles, Mass and Volume of gases Class Exercises and Answers Homework Questions

The document can be used to start IGCSE chemistry lecture on Formula, Equations, Word equation, Symbol Equations and balancing. It can be used by students to self study how balancing of simple and advance equations can be done by following some simple rules. It also explains the importance of writing word and symbol equations and information conveyed by a balanced chemical reaction. Topics Covered • Chemical reaction • Word Equation • Symbol Equation • Balancing Chemical reactions • Simple rules for balancing reactions (anyone can learn how to balance a chemical reaction) • Information conveyed by reactions • Mole and its importance in balancing

The test paper contains important -past exam questions / Exam style questions on Energy Changes in Chemical reactions /Energetics - MCQ, Structured and ATP question on energy changes

 **IGCSE General Physics -Measurements Revision test. Time- 1 Hr Answer Key Doc ** Apparatus, Clocks  Measuring Cylinders  Errors,  Screw gauge,  measuring,  reading length mass and time  calculation and graphs volume and density