Chapters 10-14 Flashcards
1
Q
- Substances that dissolve in water to produce ions that can conduct an electrical current are called _____________.
A
Electrolytes
2
Q
- The effects of changes on equilibrium systems is described by ___________ principle.
A
Le Chatelier’s
3
Q
- The study of reaction rates and pathways is chemical _______________.
A
Chemical kinetics
4
Q
- The minimum kinetic energy that a molecule must possess to undergo a chemical reaction is the ______________.
A
Activation energy
5
Q
- A substance that increases the rate of a chemical reaction without being consumed in the reaction is a(n) ______________.
A
Catalyst
6
Q
- Which of the following changes would not increase the rate of a chemical reaction?
A
Diluting reactant concentrations
7
Q
- A solution that contains as much dissolved solute as possible under equilibrium conditions is said to be _______________.
A
Saturated solution
8
Q
- The theory that when two molecules collide and chemically react they form a short - lived activated complex before breaking apart to form the products is the ___________ theory.
A
Transition-state
9
Q
- Which of the following statements about catalyst is true?
A
A catalyst increases the reaction rate by lowering the reaction’s activation energy
10
Q
- The rate of a chemical reaction is usually measured as ______________.
A
Concentration of a given substance per unit of time
11
Q
- In a solution of sodium chloride in water, water is the _____________.
A
Solvent
12
Q
- Which of the following statements best describes a system at equilibrium?
A
Rates of forward and reverse reactions are equal
13
Q
- The flow of solvent through a semipermeable membrane from a more dilute solution to a more concentrated solution is called ____________.
A
Osmosis
14
Q
- A mixture containing tiny clumps or particles that remain suspended within the mixture and will not settle out is a(n) ______________.
A
Colloid
15
Q
- If the temperature of a chemical reaction is increased from 20 degrees celcious to 30 degrees celcious we would ordinarily expect the reaction rate to ______________.
A
Double
