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CHEM ( MON. EXAM)
41問 • 9ヶ月前
  • Honeylyn Joy Rirao
    • 通報

    問題一覧

  • 1

    Anything that occupies space has volume and has mass it has composition structure and properties

    matter

  • 2

    Refers to the kind of elements present in a certain substance as well as the number of atoms of each kind

    composition

  • 3

    Refers to the arrangement of atom

    structure

  • 4

    The characteristic and behavior used to describe matter

    properties

  • 5

    Considered as the fourth state of matter

    plasma

  • 6

    Hot ionized gas which allow both the positive charge ion and negative charge electron to coexist

    plasma

  • 7

    How many percent of matter in the universe is in plasma state

    98%

  • 8

    Phase changes that require energy

    melting, vaporization, sublimation

  • 9

    Phase changes that release energy

    condensation, freezing, deposition

  • 10

    Change in the form of matter without changing its composition example of such change are phase changes such as melting boiling

    physical change

  • 11

    One that leads to a change in the composition of the matter involved the burning of woods leave the product different than to start material

    chemical change

  • 12

    Quit often reversible

    physical change

  • 13

    Are you usually irreversible

    chemical change

  • 14

    Can be observed and measure without changing the identity and composition of the substance

    physical properties

  • 15

    Depend on the amount of the sample being examined like the volume mass weight and length. This properties are non permanent and vary from sample to sample

    extrinsic properties

  • 16

    Refers to qualities of the sample or material like temperature color solubility odor and density boiling point texture freezing point This properties are permanent or that depend on the kind of substances itself

    intrinsic properties

  • 17

    The degree of heat to which a substance must be subjected to bring out vaporization and at which point it will ignite on contact with flame or gasoline

    flash point

  • 18

    Minimum temperature to which combustion takes place

    kindling point or ignition temperature

  • 19

    Refers to the ability of a substance to undergo changes to transform into a different substance it describe how a substance react to with another substance

    chemical properties

  • 20

    Combined with oxygen in the presence of water to form rust

    iron

  • 21

    Very dangerous because it explode easily

    nitroglycerin

  • 22

    Possess almost no hazard because it is very unreactive

    neon

  • 23

    Matter that has uniform or unchanging chemical composition

    pure substance

  • 24

    A pure substance which cannot be separated into a simpler form by physical or chemical means

    element

  • 25

    Have both characteristics of metals and metalloids Properties include poor conductor of heat and electricity solid are brittle and dull

    metalloids

  • 26

    Combination of two or more different elements that are combined chemically

    compound

  • 27

    Sodium chloride or NaCl

    table salt

  • 28

    Hydrogen oxide (o) or h2o

    water

  • 29

    Can be classified as acids bases and salt

    compound

  • 30

    A compound always consists of the same element combined in the same proportion by mass

    law of definite composition or proportion

  • 31

    A combination of two or more pure substances in which each pair substance retain its own properties

    mixture

  • 32

    Do not blend smoothly throughout and individual substances are visible

    heterogeneous mixture

  • 33

    Have the same composition throughout and always have a single phase also referred to as solution

    homogeneous mixture

  • 34

    From solid to liquid

    melting

  • 35

    From liquid to gas

    vaporization

  • 36

    From gas to plasma

    ionization

  • 37

    From plasma to gas

    deionization

  • 38

    From gas to liquid

    condensation

  • 39

    From liquid to solid

    freezing

  • 40

    Solid to gas

    sublimation

  • 41

    Gas to solid

    deposition

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    42問 • 8ヶ月前
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    問題一覧

  • 1

    Anything that occupies space has volume and has mass it has composition structure and properties

    matter

  • 2

    Refers to the kind of elements present in a certain substance as well as the number of atoms of each kind

    composition

  • 3

    Refers to the arrangement of atom

    structure

  • 4

    The characteristic and behavior used to describe matter

    properties

  • 5

    Considered as the fourth state of matter

    plasma

  • 6

    Hot ionized gas which allow both the positive charge ion and negative charge electron to coexist

    plasma

  • 7

    How many percent of matter in the universe is in plasma state

    98%

  • 8

    Phase changes that require energy

    melting, vaporization, sublimation

  • 9

    Phase changes that release energy

    condensation, freezing, deposition

  • 10

    Change in the form of matter without changing its composition example of such change are phase changes such as melting boiling

    physical change

  • 11

    One that leads to a change in the composition of the matter involved the burning of woods leave the product different than to start material

    chemical change

  • 12

    Quit often reversible

    physical change

  • 13

    Are you usually irreversible

    chemical change

  • 14

    Can be observed and measure without changing the identity and composition of the substance

    physical properties

  • 15

    Depend on the amount of the sample being examined like the volume mass weight and length. This properties are non permanent and vary from sample to sample

    extrinsic properties

  • 16

    Refers to qualities of the sample or material like temperature color solubility odor and density boiling point texture freezing point This properties are permanent or that depend on the kind of substances itself

    intrinsic properties

  • 17

    The degree of heat to which a substance must be subjected to bring out vaporization and at which point it will ignite on contact with flame or gasoline

    flash point

  • 18

    Minimum temperature to which combustion takes place

    kindling point or ignition temperature

  • 19

    Refers to the ability of a substance to undergo changes to transform into a different substance it describe how a substance react to with another substance

    chemical properties

  • 20

    Combined with oxygen in the presence of water to form rust

    iron

  • 21

    Very dangerous because it explode easily

    nitroglycerin

  • 22

    Possess almost no hazard because it is very unreactive

    neon

  • 23

    Matter that has uniform or unchanging chemical composition

    pure substance

  • 24

    A pure substance which cannot be separated into a simpler form by physical or chemical means

    element

  • 25

    Have both characteristics of metals and metalloids Properties include poor conductor of heat and electricity solid are brittle and dull

    metalloids

  • 26

    Combination of two or more different elements that are combined chemically

    compound

  • 27

    Sodium chloride or NaCl

    table salt

  • 28

    Hydrogen oxide (o) or h2o

    water

  • 29

    Can be classified as acids bases and salt

    compound

  • 30

    A compound always consists of the same element combined in the same proportion by mass

    law of definite composition or proportion

  • 31

    A combination of two or more pure substances in which each pair substance retain its own properties

    mixture

  • 32

    Do not blend smoothly throughout and individual substances are visible

    heterogeneous mixture

  • 33

    Have the same composition throughout and always have a single phase also referred to as solution

    homogeneous mixture

  • 34

    From solid to liquid

    melting

  • 35

    From liquid to gas

    vaporization

  • 36

    From gas to plasma

    ionization

  • 37

    From plasma to gas

    deionization

  • 38

    From gas to liquid

    condensation

  • 39

    From liquid to solid

    freezing

  • 40

    Solid to gas

    sublimation

  • 41

    Gas to solid

    deposition