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Energy is conserved in chemical reactions. The amount of energy in the universe at the end of a chemical reaction is the same as before the reaction takes place. If a reaction transfers energy to the surroundings the product molecules must have less energy than the reactants, by the amount transferred. An exothermic reaction is one that transfers energy to the surroundings so the temperature of the surroundings increases. Exothermic reactions include combustion, many oxidation reactions and neutralisation. Everyday uses of exothermic reactions include self-heating cans and hand warmers. An endothermic reaction is one that takes in energy from the surroundings so the temperature of the surroundings decreases. Endothermic reactions include thermal decompositions and the reaction of citric acid and sodium hydrogencarbonate. Some sports injury packs are based on endothermic reactions. Students should be able to: • distinguish between exothermic and endothermic reactions on the basis of the temperature change of the surroundings • evaluate uses and applications of exothermic and endothermic reactions given appropriate information.

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LO1: State that blood glucose concentration is controlled by the pancreas LO2 :Describe what happens when blood glucose levels become too high or low. LO3: Explain how glucagon interacts with insulin to control blood glucose levels Glucose regulation story board activity add labels to the sheet for optimum glucose levels past paper questions quiz extension questions And a differentiated version for lower ability

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LO1: To describe the principles of vaccination LO2: To explain the role of vaccination programs in preventing epidemics. LO3: To evaluate possible sources of medicines Keywords: vaccination, immunological memory, herd immunity, secondary metabolites

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describe the properties that are important in water explain the properties of water linked to the polar nature of the molecule explain the significance of these properties to living organisms and processes. Explain what is meant by the term inorganic ions and where they occur in the body Explain the specific role of hydrogen, iron, sodium and phosphate ions Relate the role of these ions to their properties

LO: Describe what a chromosome is and where chromosomes are found in the cell. Describe simply how and why body cells divide. Draw simple diagrams to describe mitosis. Draw a simple diagram to describe the cell cycle keywords: mitosis, daughter cell, interphase, cytokinesis. literacy task draw mitosis stages true and false exam questions mitotic index stretch and challenge

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LO1: To describe how to test for a range of carbohydrates, lipids and proteins. LO2: To interpret data and determine if an unknown is a carbohydrate, lipid or protein. background theory. food tests mind map required practical 6 mark question