Practice calculating number of moles, relative formula mass and mass with these tiered questions. Answers included. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

PowerPoint that covers the following learning objectives: Investigate how light travels through a lens. Describe the difference between a convex lens and a concave lens. Identify the focal point in a light ray diagram of a convex lens. This is made for a KS3 science class. Includes questions, answers, diagrams and link to a virtual simulation.

PowerPoint that covers the following learning objectives: Explain why breathing rate increases during exercise. Plan and carry out an investigation to measure the effect of exercise on breathing rates. This is made for a KS3 level science class. Includes: a mind-map, questions, answers, tables, variables, prediction, method, help with the bar graph, conclusion and evaluation.

Practice calculating magnification, image size and real size with these tiered questions. Answers included. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

Learning objectives: To describe how temperature affects the rate of reaction. To use collision theory to explain how changing temperature alters the rate of reaction.

PowerPoint that covers the following learning objectives: Define electrolysis. Describe electrolysis in terms of the movement of ions. Explain why electrolysis can only occur when an ionic compound is molten or in aqueous solution. This is made for a KS4 GCSE Chemistry class. Includes diagrams, a demonstration activity, questions and answers.

Practice calculating percentage yield with these tiered questions. Answers included. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

PowerPoint that covers the following learning objectives: Write a method for making a soluble salt from a neutralisation reaction involving an insoluble base. Describe why steps in the method are necessary to get pure crystals. Includes questions, answers, a video, method to follow, safety guidance and application questions with answers. This is made for a GCSE chemistry class. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

Includes questions, answers, a practical opportunity, diagrams and explanations. This is made for a GCSE biology class.

PowerPoint that covers the following learning objective: Investigate how refraction happens using a glass block. This is made for a KS3 level science class. Includes questions, answers, diagrams, a practical opportunity and videos/simulations if you don’t have the practical equipment.

PowerPoint that covers the following learning objectives: Explain why bond breaking is endothermic and bond making is exothermic. Explain why a reaction is exothermic or endothermic in terms of the amount of energy needed to break bonds and being released when bonds are formed. Calculate the energy change for a reaction, including the correct unit. Includes diagrams, explanations, examples, questions and answers. This is made for a GCSE chemistry class. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

PowerPoint that covers the following learning objectives: State that aluminium can be extracted from aluminium oxide using electrolysis and write the overall word equation. Describe the electrolysis of aluminium oxide. Explain the classification of the reactions at each electrode as oxidation or reduction by writing half equations. Explain why cryolite is added to aluminium oxide in the industrial extraction of aluminium. Includes questions, answers, diagrams, explanations and a quiz. This is made for a GCSE chemistry class. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

Practice calculating the percentage by mass of an element in a compound with these tiered questions. Answers included. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

PowerPoint that covers the following learning objectives: Describe electrolysis in terms of movement of ions when an ionic compound is molten. Predict the products at each electrode for the electrolysis of a molten ionic compound. Explain whether the reactions at each electrode are oxidation or reduction. Write half equations for oxidation and reduction reactions. This includes diagrams, questions, answers and explanations. This is made for a GCSE chemistry class. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

PowerPoint that covers the following learning objectives: Draw a simple reaction profile diagram for exothermic and endothermic reactions. Define and label activation energy on a reaction profile diagram. Explain that the activation energy is the energy needed for a reaction to occur. Includes diagrams, explanations, questions and answers. This is made for a GCSE chemistry class. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

PowerPoint for a GCSE KS4 science class. Includes questions and answers. Covers the following learning objectives: Describe the composition of crude oil. Define what is meant by a hydrocarbon. Define what is meant by an alkane. State the names and describe the first four alkanes. Apply a general formula to generate a molecular formula and a displayed formula for a straight-chain alkane.

PowerPoint that covers the following learning objectives: Describe the limitations of using dot and cross, ball and stick (2D and 3D) and displayed formula diagrams to represent simple covalent molecules. Define intermolecular forces. Explain why simple molecules have low melting and boiling points. Explain why simple molecules do not conduct electricity. This is made for a KS4 chemistry class. Includes questions, answers and explanations.

Practice identifying the relative atomic mass and calculating relative formula/molecular mass with these tiered questions. Answers included.

Includes testing for: Cations Anions Gas tests Test for Water Testing for Purity of Water Flame Tests Question on one side, answer on the other. Print double sided (flip along long side of paper).

Practice finding the Ar of an element and calculating the Mr of a molecule or chemical formula with these tiered questions. Answers included