Hydrogen reacts with chlorine to form hydrogen chloride. A mixture of hydrogen gas and chlorine gas is kept at room temperature.
According to collision theory, what happens in most collisions between the particles?
The particles lower the activation energy of the reaction.
The particles gain kinetic energy and move faster.
The particles bounce apart without reacting.
The particles react to form hydrogen chloride.
122 exam-style questions on Edexcel GCSE Chemistry 8.1 Rates of reaction, covering 8.1.1 Measuring and interpreting rates of reaction, 8.1.2 Collision theory and the factors affecting rate, and 8.1.3 Catalysts and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.