Chemistry Chapter 13 Study Guide-Test 8

The ________ of a chemical reaction depends on several factors, including temperature and reactant concentration.

Molecules undergoing chemical reactions pass through untsable, short-lived _____________ __________ before assuming their final forms.

Molecules must possesss a certain amount of kinetic energy-___ _______________________ ____________- in order to undergo a chemical reaction.

What increases the rate of a chemical reaction by lowering the energy required for molecules to react.

Reactions that seem similar from the balanced equation often take place through dramatically different ____________ _______________________.

Surprisingly, both actions release roughly the same amount of enregy; it is the different what of the cmeical reactions however that make the world safe for candy bar eaters.

What is the study of rates of reactions (their speeds) and the pathway taken during the reacton (the mechanism of the reaction)

Reaction rate may be defined by what equation?

The rate is often measured over a relatively short time interval immediately after the reactans are combined; this is known as what?

The greater the frequency and the greater the energy of collision between reactant particles, the greater the rate of reaction; this concept is known as what?

On the basis of the collision theory, we would also expect the reaction rate for most reactions to depend on the positioning of the molecules-their what-when they collide?

In cases where the reactants are not in the same phase--this system, the reaction rate depends on the area of contact between the phases.

What is one important factor that affects the rate of chemical reactions?

What is the general rule of thumb?

Apparently, the higher temperature must result in a greater what of the collisions being effective to produce products?