C3 - Energy 0.0 / 5 ? ScienceEnergyGCSEOCR Created by: kaliSereneCreated on: 05-05-16 13:56 What type of process is bond breaking? Endothermic 1 of 8 What type of process is bond making? Exothermic 2 of 8 What determines whether a reaction was endothermic or exothermic? The energy made and the energy produced need to be compared 3 of 8 What is an endothermic reaction? A reaction in which the system absorbs energy from its surroundings in the form of heat. If more energy is needed than released. 4 of 8 What is an exothermic reaction? An exothermic reaction is a chemical reaction that releases energy by light or heat. If more energy is released than needed. 5 of 8 How is the energy transferred by a fuel calculated by? mass(in g) x specific heat capacity(in j/g degrees Celsius) x temperature change( in degrees Celsius) 6 of 8 How can reliability of an experiment be improved? Repeating it. The more times the experiment is repeated, the more reliable it is. 7 of 8 What formula is needed to calculate the energy in a gram of fuel? energy per gram =energy released (in J) / mass of fuel burnt (in g) 8 of 8
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