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Reaction rate measures how quickly reactants are converted to products over time: rate = −Δ[Reactant]/Δt = +Δ[Product]/Δt. Factors affecting rate include concentration, temperature, catalysts, surface area, and state of reactants.

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1. 1Rate = Δ[concentration] / Δtime
2. 2Rate law: rate = k[A]^m[B]^n (m,n are reaction orders)
3. 3Rate constant k increases with temperature (Arrhenius)
4. 4Doubling temperature roughly doubles reaction rate for each 10°C increase (rule of thumb)

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