Knowledge accumulated by experience and observation rather than theory.

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

T(s) in2os] (m) 0 185 2.39 546 1.90 725 1.70 the decomposition of n205 can be described by the equation 2.68 given these data for the reaction at 45°c in carbon tetrachloride solution, calculate the average rate of reaction for each successive time interval. ntr s to 185 s 185 s to 546 s 546 s to 725 s number number number reaction rate: m/s m/s m/s