Review definition of momentum as mass x velocity. Discuss factors which will cause a change in momentum. Define impulse as force x time, which is a change in momentum. Elicit how force x time equals mass x velocity. Impulse is a change in velocity. Discuss the beginning of conservation of momentum
Continue with heat of formation calculation. Use heat of formation equals the sum of the heat od the products minus the heat of the reactants. Solve in class the determination of he heat of formation when benzene undergoes combustion with oxygen.
Begin a discussion of Newton's 1st law of thermodytnamics which involves energy transferred as heat and work