The cards Question In an endothermic change, which way is energy transferred between the substance and its surroundings? Tap to flip Answer Into the substance, from the surroundings. Question In an exothermic change, how does a substance transfer energy to its surroundings? Tap to flip Answer It transfers energy out to the surroundings by heating. Question Are melting, evaporating and boiling endothermic or exothermic? Tap to flip Answer Endothermic. Question Are condensing and freezing endothermic or exothermic? Tap to flip Answer Exothermic. Question As a substance cools, which changes of state may happen to it? Tap to flip Answer It may condense or freeze. Question Which principle says that energy cannot simply appear or disappear? Tap to flip Answer The conservation of energy. Question How do changes of state appear on a cooling curve? Tap to flip Answer As plateaus: flat sections where the temperature stays the same for a time. Question What is the melting point of a substance? Tap to flip Answer The temperature at which it changes from a solid to a liquid. Question What is freezing? Tap to flip Answer A substance changing from the liquid state to the solid state. Question Temperature is an indirect measure of what? Tap to flip Answer The energy of the particles in a substance. Question As a substance cools and releases energy to its surroundings, what is observed? Tap to flip Answer Its temperature decreases. Question In an exothermic chemical reaction, where is energy transferred from and to? Tap to flip Answer From the reactants to the surroundings. Question Give an example of an exothermic chemical reaction. Tap to flip Answer Combustion. Question In an endothermic chemical reaction, where is energy transferred from and to? Tap to flip Answer From the surroundings to the products. Question Give an example of an endothermic chemical reaction. Tap to flip Answer Photosynthesis. Question What happens to the temperature of the surroundings during an exothermic reaction? Tap to flip Answer It increases. Question What happens to the temperature of the surroundings during an endothermic reaction? Tap to flip Answer It decreases. Question What does it mean when thermal energy dissipates? Tap to flip Answer It is transferred to the environment and wasted. Question In combustion, what does a fuel react with when it burns? Tap to flip Answer Oxygen. Question What is a fuel? Tap to flip Answer A substance that releases its stored energy when it undergoes combustion. Question What is a fair test? Tap to flip Answer A test in which variables are controlled so that only one change affects the dependent variable. Question What are control variables? Tap to flip Answer All variables other than the independent and dependent variables, kept the same throughout an investigation. Question When comparing fuels by heating water, what is the independent variable? Tap to flip Answer The type of fuel. Question When comparing fuels by heating water, what is the dependent variable? Tap to flip Answer The temperature increase of the water. Question When comparing fuels by heating water, give one control variable. Tap to flip Answer E.g. the mass of fuel, or the volume of water. Question How does an electric generator compare with a motor? Tap to flip Answer It works like a motor in reverse, generating electricity when it is pushed round. Question What is a pollutant? Tap to flip Answer A substance that damages air, water or land and is likely to harm living organisms. Question What are greenhouse gases? Tap to flip Answer Gases in the atmosphere that keep it warmer than it would be without them. Question In a power station, what is the heat from burning gas or oil used to do? Tap to flip Answer Heat water into steam. Question In a power station, what does the moving steam push? Tap to flip Answer Turbines, which drive electric generators. Question Give one fuel that produces greenhouse gases and pollutants when burned. Tap to flip Answer E.g. natural gas, oil, waste or wood. Question What is a renewable resource? Tap to flip Answer An energy resource that can be replenished as quickly as it is used, so it will not run out. Question What is a non-renewable resource? Tap to flip Answer A resource that cannot be replenished. Question What is a sustainable resource? Tap to flip Answer One that can be replenished naturally and used with little or no negative impact on the environment. Question What is made to spin inside an electric generator to generate electricity? Tap to flip Answer Coils of wire, in a magnetic field. Question What is a turbine? Tap to flip Answer A series of angled blades that turn electric generators. Question Give one thing that can be used to spin a turbine. Tap to flip Answer E.g. falling water, wind, or steam made by burning biomass, oil or gas. Question Does burning biomass release carbon dioxide? Tap to flip Answer Yes, but regrowing plants absorb it. Where this deck sits in the curriculum Curriculum National Curriculum for England Stage Key stage 3 (Years 7–9) Course KS3 Science Unit Fuels and energetics England's National Curriculum sets what is taught; the units and their order are Oak National Academy's. Flash Feed is not affiliated with Oak or any exam board.
How this deck was checked On 2026-11-02, every card was compared with its source: the lessons of Oak National Academy, a public body funded by England's Department for Education that publishes lessons for the national curriculum. Because the cards come from those lessons, no second source was sought. The comparison was done automatically, not by a teacher, so a card can still be wrong. Flash Feed is not affiliated with any source named here.
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A Science lesson by Oak National Academy licensed under Open Government Licence (OGL)
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