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Thermochemistry
73問 • 4ヶ月前
  • HERSHEY VALERIE BERNARDINO
    • 通報

    問題一覧

  • 1

    Study of rate of chemical reactions

    reaction kinetics

  • 2

    Reaction kinetics is explained by

    collision theory

  • 3

    States that reaction occur when reactants "effectively collide"

    collision theory

  • 4

    For a collision to be effective and to lead to reaction, it needs 2 of the following

    proper orientation , suffienct energy

  • 5

    Wrong orientation will ___

    not yield a reaction

  • 6

    Ea =

    activation energy

  • 7

    Minimum required energy required for reactant molecules to collide effectively and react

    activation energy

  • 8

    Most reactive because of its high kinetic energy

    gas

  • 9

    What is correct in term of their kinetic energy

    S < L < G

  • 10

    Has a frequent collision because of its high kinetic energy

    gas

  • 11

    Factors that affect the rate of chemical reactions which depends on whether the reactants are solid, liquid, or gas, which influence how often their particles collide

    physical state of the reactants

  • 12

    The lower the particle size,

    the higher the surface area

  • 13

    Factors that affect the rate of reaction which depends on the particle size

    surface area

  • 14

    Higher kinetic energy,

    faster reaction

  • 15

    When temperature increases, particles move ___

    faster

  • 16

    Higher temperature =

    higher kinetic energy

  • 17

    Higher temperature =

    more collision

  • 18

    Speeds up the rate of a chemical reaction

    catalyst

  • 19

    Factor that speeds up the rate of a chemical reaction by lowering the activation energy

    presence of a catalyst

  • 20

    Catalyst lowers activation energy which makes the rate of reaction

    faster

  • 21

    Catalyst is ___ in a chemical reaction

    not consumed

  • 22

    Catalyst ___ at the end of a reaction

    remains unchanged

  • 23

    Higher concentration =

    faster reaction rate

  • 24

    Higher concentrations =

    more frequent collisions

  • 25

    Branch of physical chemistry that describes energy (heat) changes that occur during a chemical reaction

    Thermochemistry

  • 26

    Refers to the heat content of a system and is often used to describe the energy changed of a reaction

    enthalpy

  • 27

    Refers to the degree of disorderness

    entropy

  • 28

    ΔH represents the

    change in enthalpy

  • 29

    ΔS represents the

    change in entropy

  • 30

    Absorbs heat

    endothermic

  • 31

    Releases heat

    exothermic

  • 32

    Solid to liquid and liquid to gas

    absorbs heat from the surroundings

  • 33

    Gas to liquid and liquid to solid

    releases heat to the surroundings

  • 34

    Solid to liquid and liquid to gas =

    endothermic

  • 35

    Gas to liquid and liquid to solid =

    exothermic

  • 36

    The surrounding environment is cold

    endothermic

  • 37

    The surrounding environment is hot

    exothermic

  • 38

    Change in enthalpy is + which means the products have more energy than the reactant

    endothermic

  • 39

    Change in enthalpy is - which means the products have less energy than the reactant

    exothermic

  • 40

    Change in entropy is -

    endothermic

  • 41

    Change in entropy is +

    exothermic

  • 42

    Change in entropy is __ when the system becomes more disordered

    +

  • 43

    Change in entropy is __ when the system becomes more ordered

    -

  • 44

    In melting, the particles become more

    disordered

  • 45

    In condensation, the particles became more

    ordered

  • 46

    Law of thermodyanamics which states that a decrease in temperature in the surroundings lead to a decrease in the entropy of the surroundings

    second law

  • 47

    Initiates chemical reaction on its own

    spontaneous

  • 48

    Needs external heat to start chemical reaction

    non-spontaneous

  • 49

    In any spontaneous process, the total entropy of a system and its surroundings always ___

    increases

  • 50

    Energy naturally flowd from ____

    hot to cold

  • 51

    Melting, evaporation, sublimation, and breaking of bonds

    endothermic

  • 52

    Melting, evaporation, sublimation, and breaking of bonds

    non-spontaneous

  • 53

    Condensation, deposition, freezing, and formation of bonds

    exothermic

  • 54

    Condensation, deposition, freezing, and formation of bonds

    spontaneous

  • 55

    Used to determine whether a chemical reaction is spontaneous, non-spontaneous, or at equilibrium

    Gibbs Free Energy

  • 56

    Gibbs free energy is classified as

    thermodynamic potential

  • 57

    Calculates the maximum reversible wok that maybe performed by a thermodynamic system at a constant temperature and pressure

    Gibbs free energy

  • 58

    Type of TD system which has both energy transfer and mass/matter transfer with the surroundings

    open - nonconservative

  • 59

    Type of TD system which has energy transfer but no mass/matter transfer

    closed - conservative

  • 60

    Type of TD system which has no energy transfer and no mass/matter transfer

    isolated - adiabatic

  • 61

    Does not exist in reality

    isolated - adiabatic

  • 62

    Law of TD which defines the law of conservation of energy

    first law

  • 63

    Law of TD which states that energy can neither be created nor destroyed

    first law

  • 64

    States that energy can be interconverted, but the sum of energy must remain constant (e.g. thermal to mechanical energy)

    first law

  • 65

    Law of TD which defines entropy

    second law

  • 66

    Second law of TD states that entropy of the universe, as an isolated system will ___ in an irreversible process

    increase

  • 67

    Second law of TD states that entropy of the universe, as an isolated system will ___ in a reversible process

    remain constant

  • 68

    Entropy is __ in a reversible process

    zero

  • 69

    Law of TD which states that he entropy of a perfect crystal at a temperature of 0 K (absolute zero) is always equal to zero

    third law

  • 70

    Third law of TD which states that he entropy of a perfect crystal at a temperature of 0 K (absolute zero) is always equal to ___

    zero

  • 71

    States that motion theoretically stops at absolute zero

    third law

  • 72

    Law of TD which states that if two systems are in thermal equilibrium with the third one, then the first two systems are in equilibrium with each other

    zeroth law

  • 73

    States that heat always flows spontaneously from hotter to colder regions of matter

    second law

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    問題一覧

  • 1

    Study of rate of chemical reactions

    reaction kinetics

  • 2

    Reaction kinetics is explained by

    collision theory

  • 3

    States that reaction occur when reactants "effectively collide"

    collision theory

  • 4

    For a collision to be effective and to lead to reaction, it needs 2 of the following

    proper orientation , suffienct energy

  • 5

    Wrong orientation will ___

    not yield a reaction

  • 6

    Ea =

    activation energy

  • 7

    Minimum required energy required for reactant molecules to collide effectively and react

    activation energy

  • 8

    Most reactive because of its high kinetic energy

    gas

  • 9

    What is correct in term of their kinetic energy

    S < L < G

  • 10

    Has a frequent collision because of its high kinetic energy

    gas

  • 11

    Factors that affect the rate of chemical reactions which depends on whether the reactants are solid, liquid, or gas, which influence how often their particles collide

    physical state of the reactants

  • 12

    The lower the particle size,

    the higher the surface area

  • 13

    Factors that affect the rate of reaction which depends on the particle size

    surface area

  • 14

    Higher kinetic energy,

    faster reaction

  • 15

    When temperature increases, particles move ___

    faster

  • 16

    Higher temperature =

    higher kinetic energy

  • 17

    Higher temperature =

    more collision

  • 18

    Speeds up the rate of a chemical reaction

    catalyst

  • 19

    Factor that speeds up the rate of a chemical reaction by lowering the activation energy

    presence of a catalyst

  • 20

    Catalyst lowers activation energy which makes the rate of reaction

    faster

  • 21

    Catalyst is ___ in a chemical reaction

    not consumed

  • 22

    Catalyst ___ at the end of a reaction

    remains unchanged

  • 23

    Higher concentration =

    faster reaction rate

  • 24

    Higher concentrations =

    more frequent collisions

  • 25

    Branch of physical chemistry that describes energy (heat) changes that occur during a chemical reaction

    Thermochemistry

  • 26

    Refers to the heat content of a system and is often used to describe the energy changed of a reaction

    enthalpy

  • 27

    Refers to the degree of disorderness

    entropy

  • 28

    ΔH represents the

    change in enthalpy

  • 29

    ΔS represents the

    change in entropy

  • 30

    Absorbs heat

    endothermic

  • 31

    Releases heat

    exothermic

  • 32

    Solid to liquid and liquid to gas

    absorbs heat from the surroundings

  • 33

    Gas to liquid and liquid to solid

    releases heat to the surroundings

  • 34

    Solid to liquid and liquid to gas =

    endothermic

  • 35

    Gas to liquid and liquid to solid =

    exothermic

  • 36

    The surrounding environment is cold

    endothermic

  • 37

    The surrounding environment is hot

    exothermic

  • 38

    Change in enthalpy is + which means the products have more energy than the reactant

    endothermic

  • 39

    Change in enthalpy is - which means the products have less energy than the reactant

    exothermic

  • 40

    Change in entropy is -

    endothermic

  • 41

    Change in entropy is +

    exothermic

  • 42

    Change in entropy is __ when the system becomes more disordered

    +

  • 43

    Change in entropy is __ when the system becomes more ordered

    -

  • 44

    In melting, the particles become more

    disordered

  • 45

    In condensation, the particles became more

    ordered

  • 46

    Law of thermodyanamics which states that a decrease in temperature in the surroundings lead to a decrease in the entropy of the surroundings

    second law

  • 47

    Initiates chemical reaction on its own

    spontaneous

  • 48

    Needs external heat to start chemical reaction

    non-spontaneous

  • 49

    In any spontaneous process, the total entropy of a system and its surroundings always ___

    increases

  • 50

    Energy naturally flowd from ____

    hot to cold

  • 51

    Melting, evaporation, sublimation, and breaking of bonds

    endothermic

  • 52

    Melting, evaporation, sublimation, and breaking of bonds

    non-spontaneous

  • 53

    Condensation, deposition, freezing, and formation of bonds

    exothermic

  • 54

    Condensation, deposition, freezing, and formation of bonds

    spontaneous

  • 55

    Used to determine whether a chemical reaction is spontaneous, non-spontaneous, or at equilibrium

    Gibbs Free Energy

  • 56

    Gibbs free energy is classified as

    thermodynamic potential

  • 57

    Calculates the maximum reversible wok that maybe performed by a thermodynamic system at a constant temperature and pressure

    Gibbs free energy

  • 58

    Type of TD system which has both energy transfer and mass/matter transfer with the surroundings

    open - nonconservative

  • 59

    Type of TD system which has energy transfer but no mass/matter transfer

    closed - conservative

  • 60

    Type of TD system which has no energy transfer and no mass/matter transfer

    isolated - adiabatic

  • 61

    Does not exist in reality

    isolated - adiabatic

  • 62

    Law of TD which defines the law of conservation of energy

    first law

  • 63

    Law of TD which states that energy can neither be created nor destroyed

    first law

  • 64

    States that energy can be interconverted, but the sum of energy must remain constant (e.g. thermal to mechanical energy)

    first law

  • 65

    Law of TD which defines entropy

    second law

  • 66

    Second law of TD states that entropy of the universe, as an isolated system will ___ in an irreversible process

    increase

  • 67

    Second law of TD states that entropy of the universe, as an isolated system will ___ in a reversible process

    remain constant

  • 68

    Entropy is __ in a reversible process

    zero

  • 69

    Law of TD which states that he entropy of a perfect crystal at a temperature of 0 K (absolute zero) is always equal to zero

    third law

  • 70

    Third law of TD which states that he entropy of a perfect crystal at a temperature of 0 K (absolute zero) is always equal to ___

    zero

  • 71

    States that motion theoretically stops at absolute zero

    third law

  • 72

    Law of TD which states that if two systems are in thermal equilibrium with the third one, then the first two systems are in equilibrium with each other

    zeroth law

  • 73

    States that heat always flows spontaneously from hotter to colder regions of matter

    second law