Exothermic reactions
Science AS
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AS Science Exothermic reactions
Screen 1: The Thames Tideway Tunnel will be lined with thousands of concrete segments. Concrete is made from cement and aggregates. The cement hydrates and hardens when it is mixed with water - this hydration reaction continues for years meaning the Tunnel lining will get stronger and stronger.
Screen 2.1: What’s the energy pathway for cement as it hydrates and hardens? Click next to reveal the energy pathway diagram.
Screen 2.2: The energy pathway for cement as it hydrates and hardens.
Screen 3.1: Click next to reveal the complete equations.
Screen 3.2: Click next to reveal the complete equations.
Screen 3.3: The complete equations.
Screen 4: How would you design an experiment to measure ΔHr for these hydration reactions?