Ap Chem. Ch.5

Question 0

The study of the relationships between chemical reactions and energy changes involving heat.

Answer 0

Thermochemistry

Question 1

The study of energy and its transformations

Answer 1

Thermodynamics

Question 2

Ability to work or transfer heat.

Answer 2

Energy

Question 3

Energy used to cause and object that has mass to move.

Answer 3

Work

Question 4

Energy used to cause the temperature of an object to rise.

Answer 4

Heat

Question 5

Energy of motion

Answer 5

Kinetic energy

Question 6

Equation for kinetic energy

Answer 6

E = 1/2mv^2

k

Question 7

Energy an object possesses by virtue of its position or chemical composition.

Answer 7

Potential enery

Question 8

Joule actually equals…

Answer 8

1 kg(m^2)/s^2

Question 9

Work equation

Answer 9

F x d

Question 10

The energy transfered from a hotter object to a colder one.

• deals with the motion of objects
• always flows from hot to cold objects

Answer 10

Heat

Question 11

States that energy cannot be created or destroyed.

Answer 11

The first law of thermodynamics

Question 12

The total energy of a system

Answer 12

Internal energy

Question 13

Changes in internal energy can be measured using this equation.

Answer 13

/_\ E= Ef-Ei

Question 14

When a system undergoes a physival or chemical change, the change in internal energy is given by the heat added or liberated from the system plus the work done on or by the system. What is the equation?

Answer 14

/_\E= q +w

Question 15

An endothermic process is one that ________ heat from the surroundings.

Answer 15

Absorbs

Question 16

An exothermi processs is one that ______heat to the surroundings.

Answer 16

Releases

Question 17

Depends only on the initial and final states of a system, not by the path by which the system arrived at that state.

Answer 17

A state function

Question 18

P,V,T,E,H are state fuctions.

Answer 18

Pressure
Volume
Temperature
Internal energy
Heat changes at constant pressure

Question 19

Chemical changes may involve…

-may also involve work done on or by the system

Answer 19

Release of absorption of heat

Question 20

The heat transfered between the system and surroundings during a chemical reaction carried out under constant pressure.

Answer 20

Enthalpy

Question 21

The enthalpy change that accompanies a reation is called…

Answer 21

Enthalpy of reaction

Question 22

Balanced chemical equation that includes states and energy

Answer 22

Thermochemical equation

Question 23

Enthalpy is an ______ property

Answer 23

Extensive

Question 24

The /_\ H of enthalpy is _______proportional to the amount of reactant consumed.

Answer 24

Directly

Question 25

Measurment of heat flow.

Answer 25

Calorimetry

Question 26

Is an apparatus that measures heat flow.

Answer 26

Calorimeter

Question 27

The amount of energy required to raise the temperature of an object by 1 degree celsius.

Answer 27

Heat capacity

Question 28

The heat capacity of 1 g of a substance.

Answer 28

Specific heat

Question 29

Equation for heat capacity

Answer 29

q=m x c x /_\T

Question 30

Calculations with constant-pressure calorimetry

Answer 30

m(solution) x c(solution) x /_\T (solution)= - qrxn

Question 31

If a reaction is carried out in a series of steps, /\H for the reaction is the SUM of /\H for each of the steps.

Answer 31

Hess’s Law