What is the amount of energy needed to move an electron from one energy level to another?
a. quantum
c. bonding energy
b. energy level
d. orbital

Which of these reactions are redox reactions? check all that apply.cd + hcl → cdcl2  + h2cucl2  + na2s → 2nacl + cuscaco3  → cao + co2          2zns + 3o2  → 2zno + 2so2          ch4  + 2o2  → co2  + 2h2o

Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the temperature of the reactants will increase -

An observation that requires measurement is called quantitative observable or qualitative