State what conduction is. Describe how conduction happens. Describe how solids are better conductors than liquids.

Enhance your IB Chemistry DP exam preparation with these multiple-choice test papers covering Structures 1.1, 1.2, and 1.3 of the 2025 syllabus. Ideal for teachers and students, this resource includes: A 30-mark Standard Level (SL) paper to be completed in 50 minutes. A 40-mark Higher Level (HL) paper to be completed in 65 minutes. Comprehensive mark schemes for both SL and HL papers. A generic answer sheet for students to record their responses. Perfect for in-class assessments or practice exams, these papers are designed to reflect the new IB Chemistry format for first assessment in 2025. Get your students exam-ready with these structured and time-effective resources!

This resource is a comprehensive PowerPoint presentation designed to teach the fundamental concepts of electrolysis using molten ionic compounds. It is tailored for students studying electrochemistry and provides a detailed exploration of the processes at play during electrolysis. The presentation begins with clear learning objectives, which include describing electrolysis in terms of ion movement in molten compounds, predicting products at the electrodes, determining whether reactions are oxidation or reduction, and writing half-equations for the reactions. These objectives ensure a structured approach to understanding the topic and align with curriculum standards. To engage students, the resource includes starter activities that introduce key concepts such as the roles of electrodes (cathode and anode), the definition of electrolysis, and the identification of cations and anions in a given compound. These activities encourage critical thinking and prepare students for the main content. The presentation delves into the electrolysis of specific molten compounds, such as lead bromide and potassium iodide, using real-world examples to explain key principles. It highlights the necessity of melting ionic compounds to free the ions, enabling them to conduct electricity. Each step of the process is explained in detail, including the formation of products at the electrodes and their classification as oxidation or reduction reactions. Interactive content includes labeled diagrams, step-by-step breakdowns of electrode reactions, and the writing of half-equations for both the cathode and anode. For example, the reduction of lead ions (Pb²⁺) to lead atoms and the oxidation of bromide ions (Br⁻) to bromine molecules are clearly explained with equations and visuals. The importance of concepts like OILRIG (Oxidation Is Losing, Reduction Is Gaining) is reinforced throughout. The resource concludes with review questions and challenges, allowing students to test their understanding of topics such as the products of electrolysis, the necessity of molten ionic compounds, and the reactions occurring at each electrode. The PowerPoint file format (.pptx) ensures accessibility and compatibility for teachers. This resource is a valuable teaching aid for educators seeking to provide a thorough and engaging explanation of electrolysis with molten compounds.

Describe the difference between mass and weight. Describe the forces acting on an object falling through a fluid. Explain what terminal velocity is and when it is reached.

This PowerPoint resource, Lesson 1 - Rates of Reaction, introduces students to the concept of reaction rates in chemistry. Designed for secondary-level science classes, this resource helps students define key terms such as reactants, products, and rate of reaction, while also exploring methods for measuring reaction rates using real-world examples. The lesson includes engaging activities like graph plotting, calculating gradients, and analyzing reaction data to determine the mean and instantaneous rates of reaction. Students will develop critical analytical skills by interpreting graphs and calculating the gradient of tangents to measure reaction rates at specific points. Key methods for measuring reaction rates, including gas collection, mass loss, and time-to-precipitate formation, are thoroughly explained and accompanied by visual examples. This resource also features interactive starter activities, extension challenges, and plenary tasks, ensuring comprehensive coverage of the topic while catering to varying student abilities. It is compatible with most devices, provided in a .pptx format, and can be used with software like Microsoft PowerPoint or Google Slides. Last updated on 12/12/24, this resource includes updates to video links and questions for better user experience. Perfect for teachers aiming to simplify complex chemistry concepts, this resource is aligned with standard curricula and designed to enhance both classroom and independent learning.

This engaging PowerPoint lesson introduces students to the role of catalysts in chemical reactions, focusing on their definition, function, and real-world applications. Perfectly suited for secondary school chemistry classes, the resource combines clear explanations with practical examples to build a thorough understanding of this essential concept. What’s Included: Learning Objectives: Define a catalyst. Describe how adding a catalyst affects the rate of reaction. Use a reaction profile diagram to explain in detail the effect of adding a catalyst. Starter Activity: Questions to recap basic knowledge, such as what a catalyst is, whether it changes products, and how it affects activation energy. Video Integration: Link to a video explaining catalysts, with guided questions to enhance understanding of industrial processes like the Haber and Contact processes. Key Concepts: How catalysts provide an alternative reaction pathway with lower activation energy. Examples of catalysts in real life: enzymes, catalytic converters, and industrial reactions. Discusses the cost-efficiency and environmental benefits of using catalysts, such as reduced energy requirements. Interactive Activities: Examining reaction profile diagrams and labeling key features. Why Choose This Resource? Aligned with secondary school chemistry curricula, ensuring clarity and relevance. Includes practical, exam-style questions to reinforce learning and assess understanding. Perfect for guided lessons, student-led investigations, or revision sessions. File Type: PowerPoint (.pptx) Updated: December 2024 – Added real-world examples and enhanced visuals for better engagement. Equip your students with the knowledge and skills to understand and apply the principles of catalysts in chemistry, making learning both fun and impactful!

• Describe the effect of changing the mass or the force acting on an object on the acceleration of that object. • Calculate the force required to cause a specified acceleration on a given mass. • Perform calculations involving the rearrangement of the F = ma equation.

Calculate the stopping distance from the thinking distance and the braking distance • Categorise factors which affect thinking distance, braking distance, and both. • Calculate the braking distance of a car.

• Define what the centre of mass is and identify where it would be in a range of simple shapes. • State that a suspended object will come to rest so that the centre of mass lies below the point of suspension. • Describe an experimental technique to determine the centre of mass of an object with an irregular shape. • Compare the stability of objects to the position of their centre of mass.

Define elastic and non-elastic deformation in materials. Calculate the extension (or compression) of a material using its length and original length. State Hooke’s law and use it to calculate the force required to cause a given extension in a spring using the spring constant. Describe how elastic potential energy is stored when a material is stretched or compressed by a force. Describe force-extension graphs of elastic materials and identify the limit of proportionality. Compare the behaviour of different materials before and after the limit of proportionality.

Describe the motion of an object by interpreting velocity–time graphs. Describe how the gradient of a velocity–time graph represents the acceleration. Calculate the acceleration of an object by calculating the gradient from a velocity–time graph.

Describe the difference between speed and velocity. Calculate the acceleration of an object using the change in velocity and time. Rearrange the acceleration equation to calculate change in velocity or time.

Investigate whether the extension of the spring is proportional to the weight suspended from the spring.

Describe the difference between balanced and unbalanced forces and give examples for both. Identify and calculate resultant forces. Describe situations that are in equilibrium. Explain why the speed or direction of motion of objects can change.

Calculate the resultant force when 2 forces act on an object at an angle.

• Calculate the power of an electrical device. • Practice converting units using kilo, mega and giga prefixes. • Rank electrical appliances in order of power. • Rearrange the electrical power equation to calculate the energy transferred. • Calculate efficiency using input and output power.

Calculate the speed of an object, the time taken to travel a given distance and the distance travelled.

Describe the motion of an object by interpreting distance–time graphs. Describe how the gradient of a distance–time graph represents the speed. Calculate the speed of an object by calculating the gradient from a distance–time graph.

State what energy dissipation means. Identify and calculate useful energy and wasted energy from input and output energies. Explain what efficiency means in terms of wasted and useful energy. Calculate % efficiency using useful output and total input energies.

State the position of the Earth and the Moon with respect to the Sun in solar and lunar eclipses. Draw simple ray diagrams of solar and lunar eclipses. Describe evidence that led to a change in the model of the Solar System.