Welcome to your Energy changes Name Email Match them to their meaning endothermic reaction thermal decomposition exothermic reaction chemical reaction Breaking down a compound into its elements, or simpler compounds using a high temperature. When chemical bonds are broken and made between atoms, so that new substances (compounds or elements) are made. When energy is taken in from the surroundings When energy is transferred to the surroundings Match the practical terms to their meaning accurate anomalous result repeatable outlier A result that doesn’t show the same pattern as the other results in a set of data collected under the same conditions If an experiment is repeated several times and the results are similar to the measurements obtained previously if it doesn’t show the same pattern as the other results When a measurement is close to the true value (the actual value) being measured. What word is used to describe a reaction that absorbs energy from the surroundings? Combustion Exothermic Endothermic Displacement None What kind of reaction is combustion (burning)? Endothermic Decomposition Exothermic Neutralisation None What kind of reaction is used in handwarmers? Thermal decomposition Exothermic Endothermic None When copper carbonate is heated, it absorbs energy and breaks down into copper oxide and carbon dioxide. What kind of reaction is this? Neutralisation Endothermic Combustion Exothermic None Ammonium chloride and barium hydroxide are mixed together. At the start of the reaction the temperature is 20°C. At the end, the temperature is 3°C. Which statement is correct? The reaction involves oxidation The reaction is explosive The reaction is endothermic The reaction is exothermic None Small pieces of calcium metal are added to some cold water. At the end of the reaction, the temperature has increased to 47°C. Which word describes this reaction? Combustion Exothermic Neutralisation Endothermic None Fill in the gaps Use the words to fill in the gaps (energy, heat ,chemicals, transferred , reactions, decrease, surroundings, temperature and increase)Exothermic reactions transfer from the reacting in to the surroundings. We can measure the energy transferred by measuring the increase in the reaction.During endothermic there is a in the temperature.This is because energy is from the into the reacting chemicals Time's upYou cannot switch tabs while taking this quiz!You are not allowed to switch tabs violation has been recorded.you cannot minimize full screen mode!You are not allowed to minimize full screen while taking this quiz, violation has been recorded.Access denied! To begin the quiz, please grant this quiz access to your camera.Time is Up!
