A list of chemical and physical processes, A to H, is shown. A combustion B diffusion C melting D neutralisation E photosynthesis F reversible reaction G roasting H thermal decomposition Answer the following questions about processes A to H. Each letter may be used once, more than once or not at all. State which of the processes A to H: happens when an acid reacts with an alkali reaches a position of equilibrium involves particles changing from fixed positions to being mobile, but still touching are physical changes and is caused by gas particles colliding with each other. 0620_w24_qp_41 THEORY 2024 Paper 4, Variant 1 View