A physical change will not change the chemical make-up of the material. the change will not produce a new substance.
a chemical change will have a reaction that produces heat, light, a change in color, releases a gas, or rust
The correct answer for this question is activation energy, orientation, and frequency.
The rate of a chemical reaction is directly related to its activation energy because the higher the activation energy the lower is the rate of reaction as we know the reaction only proceed when the reactants have absorbed the enough heat energy to reach the transition state. Thus activation energy determines the rate of reaction.
The orientation of the particles is also very important as we know that the reaction between the two reactants only occur when they collide with proper orientation in time the greater the probability of the collision the greater is the rate of reaction and also the number of collisions also determines the rate of reaction.
The frequency is directly proportional to the rate of chemical reaction as the frequency of the collision increases the rate of the chemical reaction also increases.
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<em><u>ANSWER</u></em>
shell or the energy level
