CHAPTER 1 Flashcards

1
Q

-In PERSIAN LITERATURE, it is discovered during a fight of hero with a dragon.

A

FIRE

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2
Q

is discovered through spark

A

FIRE

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2
Q
  • A stone that the hero used as weapon missed the monster and struck a rock. Lights show forth and human beings saw fire for the first time.
A

FIRE

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3
Q

-has played a central role in religion.

A

FIRE

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4
Q

____ that the hero used as weapon missed the monster and struck this. Lights show forth and human beings saw fire for the first time.

A

STONE

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5
Q

-It has been used as GOD (for example the INDO – believe on “Iranian Agni”) and recognized as a symbol of home and family (the heart fire) in many cultures.

A

FIRE

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6
Q

– believe on “Iranian Agni”

A

INDO

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6
Q

in Rome was an outstanding example of the importance of fire to the Romans.

A

TEMPLE OF VESTA

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7
Q
  • Roman goddess of the earth
A

VESTA

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8
Q

is a titan and was bestowed with godlike powers when he stole the god’s fire to give it to humanity.

A

PROMETHEUS

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9
Q

It has been a symbol of purification, immortality, and renewal; hence, the lighting of flames of remembrance and the myths of the

A

PHOENIX

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10
Q

It has been a symbol of _____,_____,____; hence, the lighting of flames of remembrance and the myths of the PHOENIX

A

purification, immortality, and renewal

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11
Q

(people who lived by hunting and gathering wild food)

A

Hunter gatherers

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12
Q

Source of light by taking advantage of the glow of wood-burning fires to continue their activities after dark and inside their dwelling.

A

FIRE

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12
Q

made use of fire so that they can remain active after the sun set protect themselves from predators, warm themselves, cook and make better tools.

A

Hunter gatherers

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13
Q

People learned to control this by blowing at it through reed pipes. Then they used this technique to burn hollows in logs to create cradles, bowls, and canoes.

A

FIRE

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13
Q

Enabled people to make better weapons and tools.

A

FIRE

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14
Q

EARLY MEANS OF PRODUCING FIRE

A
  • TWO STICKS
  • HAND DRILL
  • STRIKING FLINT
  • MAGNIFYING GLASS
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15
Q

– another ancient method of starting fires to produce sparks.

–mineral stones lang ang pwedeng gamitin dito

A

STRIKING FLINT

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16
Q

-The rubbing creates friction between the sticks, and the friction generates heat.

-This heat eventually causes the wood to ignite.

A

TWO STICKS

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16
Q

– one of the oldest methods of starting fires consists of rubbing two sticks together.

A

TWO STICKS

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16
Q

is a more efficient method of rubbing two pieces of wood together.

A

HAND DRILL

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17
Q

-Rapidly spinning a stick of wood against another piece of wood can generate enough friction and heat to cause the wood to ignite.

A

HAND DRILL

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18
Q

-focuses the sunlight on tinder, and the energy of the sunlight heats the tinder until it ignites.

–concave lens ang pwedeng gamitin dito

A

MAGNIFYING GLASS

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19
Q

increases the temperature of a combustible material from kindling to ignition temperature.

A

FRICTION METHOD

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20
Q

TWO METHODS OF PRODUCING FIRE

A
  1. FRICTION METHOD
  2. PERCUSSION METHOD
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21
Q

– This method generates a spark to set kindling a fire (generates sparks)

A

PERCUSSION METHOD

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22
Q

Fire may also be generated by using a _______ to focus and converge the rays of the sun on combustible material.

A

LENS OR CURVED REFLECTOR

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23
Q

MODERN USES OF FIRE

A
  1. Used in appliances that relies on fire to operate.
  2. Used to supplement main heating system in their homes.
  3. Used over campfires.
  4. Used in incinerators to destroy garbage.
  5. Used to manufacture products and dispose of waste.
  6. Fire also heat large boilers to generate steam which then powers large turbines.
  7. Used in power plants to generate electricity.
  8. Used as a weapon in times of war.
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24
Q

-It is the manifestation of rapid chemical reaction occurring between a combustible matter and an oxidizer.

A

FIRE

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24
Q

-It refers to the study of the organization and function of fire prevention and suppression techniques; fire behavior, combustible materials, extinguishing agents, hazardous and toxic material; fire protection techniques and systems; and fire command and fire management (supervision).

A

FIRE TECHNOLOGY

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25
Q

-It is a result of rapid chemical reaction between a fuel, heat, and oxygen on oxidizer

A

FIRE

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26
Q

-Defined as the heat and light that comes from burning substances, produced by the combustion of substances.

A

FIRE

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27
Q

BURNING is also called

A

COMBUSTION.

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28
Q

– the combustion of a fuel.

A

burning process

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28
Q

is the common term of the burning process – the combustion of a fuel.

A

FIRE

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29
Q
  • is a chemical reaction or process involving combustible materials and an oxidizing agent producing heat or energy.
A

COMBUSTION

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29
Q

involves rapid oxidation.

A

COMBUSTION

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29
Q
  • the released energy stays in the reaction to continue it.
A

COMBUSTION

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30
Q
  • energy is dissipated as light and heat.
A

FIRE

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31
Q
  • is the chemical reaction producing energy in the form of heat, light and flame.
A

FIRE

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32
Q

-It is a self-sustaining oxidation process accompanied by the release of heat and light.

A

FIRE

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33
Q

involves burning to get a substance to react with oxygen.

A

COMBUSTION

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34
Q

is when a substance reacts with oxygen.

A

OXIDATION

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35
Q

Rapid oxidation of material is chemically termed as

A

COMBUSTION

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36
Q

ELEMENTS OF FIRE

A
  1. HEAT
  2. FUEL
  3. OXIDIZING AGENT/ OXYGEN
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37
Q

– a form of energy generated by the transmission of some other form of energy, as in combustion or burning (ignition temperature)

A

HEAT

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38
Q

Heat Sources:

A

OPEN FLAME
ELECTRICAL CIRCUIT
SPARKS
ALL SOURCES OF IGNITION

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39
Q

– combustible matter (organic material, hydrocarbons);

A

FUEL

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40
Q

-Any substance which reacts chemically with oxygen and flames.

A

FUEL

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41
Q

– the common oxidizing agent is

A

OXYGEN.

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41
Q

–a.k.a “REDUCING AGENT”

A

FUEL

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42
Q

–the material or substance being burned in the combustion process

A

FUEL

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43
Q
  • a colorless, odorless gas and one of the compositions of air which is approximately 21% by volume.
A

OXYGEN

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44
Q

Oxygen Sources:

A

a. 21% of normal oxygen
b. 78% of nitrogen
c. 1% of other gases

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45
Q

Oxygen Requirements:

A

a. 12% - no fire
b. 14% - flashpoint
c. 21% - fire point

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46
Q

is supplied by air, ignition temperature can be provided by the ignition device (like flame), and any combustible material (usually organic matter) burns on being heated by the ignition device.

A

OXYGEN

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46
Q

A geometrical figure that diagrams the relationship of the three elements of fire.

A

FIRE TRIANGLE THEORY

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47
Q
  • A four-sided representation of causes of fire.
A

FIRE TETRAHEDRON THEORY (FIRE QUADRANGLE THEORY)

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47
Q

When the temperature of a substance is very high, it releases highly combustible vapors known as

A

“FREE RADICALS”.

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48
Q

-When a fuel is heated, it gives off vapor which if mixed with the correct amount of air, can be ignited by heat sources

A

FIRE TETRAHEDRON THEORY

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48
Q

The fourth element that is added in the Fire Quadrangle Theory is the

A

CHEMICAL REACTION

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49
Q

-The most important part of the triangle

A

FUEL

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50
Q

is what burns.

A

FUEL

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51
Q

-It comes in three form as solid, liquid, or gas.

A

FUEL

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52
Q

FUEL SOURCES

A
  1. solid
  2. liquid
  3. gas
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53
Q

– molecules are closely packed together

A

SOLID

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54
Q

– molecules are loosely packed; density (thinner, alcohol)

A

LIQUID

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55
Q

– molecules are free to move (nitrogen, LPG)

A

GAS

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56
Q

CLASSIFICATION OF COMBUSTIBLE MATERIALS

A
  1. CLASS A FUELS
  2. CLASS B FUELS
  3. CLASS C FUELS
  4. CLASS D FUELS
  5. CLASS E FUELS
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57
Q

-Ordinary combustible materials that are usually made of organic substances such as wood and wood-based products.

-It includes some of those synthetic and/or inorganic materials like rubber, leather, and plastics.

A

CLASS A FUELS

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58
Q

-Materials which are in the form of flammable liquids such as alcohol, acidic substances oil and other chemicals such those liquid petroleum products.

Ex: Diesel, petroleum, kerosene, gasoline

A

CLASS B FUELS

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59
Q

-Normally fire-resistant materials

A

CLASS C FUELS

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60
Q

-Materials used in electric wiring and other electrical appliances.

A

CLASS C FUELS

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61
Q

-Combustible metallic substances such as magnesium, titanium, zirconium, sodium, and potassium

A

CLASS D FUELS

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62
Q

Magnesium – Mg (color niya pag sinunog ay

A

WHITE

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63
Q

Zirconium COLOR?

A

BRIGHT RED

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64
Q

SODIUM COLOR

A

YELLOW

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64
Q

-Combustible gases such as carbon monoxide, carbon dioxide, nitrogen, and oxygen.

A

CLASS E FUELS

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64
Q

WHAT ARE UNDER THE SOLID FUELS?

A

1.1 WOOD AND WOOD-BASED PRODUCTS.
1.2 FIBERS AND TEXTILES
1.3 LIQUID FUELS
1.4 GAS FUELS

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65
Q

POTASSIUM

A

VIOLET OR PURPLE

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66
Q

GENERAL CATEGORIES OF FUELS

A

SOLID FUELS

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67
Q

– include organic or inorganic, natural or synthetic, and metallic solid materials such as woods, fibers and plastics.

A

SOLID FUELS

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68
Q
  • Factors affecting ignition and burning of woods.
A

WOOD AND WOOD-BASED PRODUCTS.

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69
Q

– are the second type of solid fuels.

A

FIBERS AND TEXTILES

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69
Q

Factors affecting ignition and burning of woods.
* PHYSICAL FORM
* MOISTURE CONTENT- WATER CONTENT
* HEAT CONDUCTIVITY
* RATE AND PERIOD OF HEATING
* RATE OF COMBUSTION
* IGNITION OF TEMPERATURE

A

WOOD AND WOOD-BASED PRODUCTS.

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70
Q

CLASSIFICATION OF FIBERS

A

NATURAL FIBERS
SYNTHETIC OR ARTIFICIAL FIBERS

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71
Q

WHAT ARE UNDER THE NATURAL FIBERS

A
  1. FROM PLANTS
  2. FROM ANIMALS
  3. FROM MINERALS
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72
Q

coconut fiber

A

Coir

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72
Q
  • cellulose fibers
    -Coir (coconut fiber) bunot
    -pulp (wood fiber) kusot
A

FROM PLANTS

72
Q

-Asbestos

A

FROM MINERALS

73
Q

wood fiber

A

pulp

73
Q

-wool, silk, leather

A

FROM ANIMALS

74
Q
  • fibrous mineral or rock material with fiber
A

ASBESTOS

75
Q

is the rare type of cancer ng dahil sa asbestos

A

MESOTHELIOMA

76
Q
  • non-cellulose fibers (rayon)
A

ORGANIC FIBERS

76
Q

WHAT ARE UNDER THE SYNTHETIC OR ARTIFICIAL FIBERS

A
  1. ORGANIC FIBERS
  2. INORGANIC FIBERS
77
Q

–CARBON FIBER substance is

A

POLYCRYLONITRILE (90%), RAYON (10%)

78
Q

is a chemical (powder) used in bombs.

A

CELLULOSE NITRATE

78
Q
  • fiberglass, steel
A

INORGANIC FIBERS

78
Q

Formula OF PLASTIC

A

C12H16N4O18
CARBON, HYDROGEN, NITROGEN, OXYGEN.

79
Q

HYDROGEN %

A

46

79
Q

– These are included as ordinary fuels under class A except those materials composed of or containing “cellulose nitrate”.

A

PLASTICS

80
Q

NITROGEN %

A

48

81
Q

TYPES OF CARBON:

A

CARBON SOLID AND CARBON GAS

81
Q

primary composed of organic substances with high molecular weight.

A

PLASTICS

82
Q

-It is the thermal decomposition of a solid fuel through the action of heat.

A

PYROLYSIS

82
Q

solid in finished state.

A

PLASTICS

82
Q

initially in a liquid form or gel-like state but they are molded or cast through the application of heat, pressure, or both (oxygen)

A

PLASTICS

82
Q
  • It refers to the chemical process whereby fire consumes the most solid part of the fuel.
A

PYROLYSIS

83
Q

– The most common ______ are kerosene, gasoline, oil-based products, and other volatile products.

A

liquid fuels

84
Q

-It is also called CRUDE OIL or HYDROCARBON (liquid),

A

PETROLEUM

84
Q

PETROLEUM COLOR

A

BLACK

85
Q

ranges from clear yellow-brown oils to thick, black tars.

A

PETROLEUM

86
Q

is refined to produce such fuels as gasoline, diesel oil, and kerosene.

A

PETROLEUM

87
Q

-It is used to provide energy for most motor vehicles and piston-engine airplanes.

A

GASOLINE

87
Q

is burned as fuel in stoves and boilers without processing.

A

PETROLEUM

88
Q

improve the octane

A

METHANOL

89
Q

Flashpoint: -49F

A

GASOLINE

90
Q

GIVE THEIR %

unleaded -
premium -
v-power -
blaze-

A

unleaded (87%),
premium (89%),
v-power (91%),
blaze (100%)

91
Q

-Powers most trains, ships, and large trucks.

A

DIESEL OIL

91
Q

–sulfur ang hinahalo dito

A

DIESEL OIL

92
Q

Flashpoint: 125F- 180F (52C-82C)

A

DIESEL OIL

92
Q

mas matagal masunog

A

DIESEL OIL

93
Q

-Provides energy for jet planes (lamp)

A

KEROSENE

93
Q

-These are light oils, which are used chiefly to heat homes and small buildings.

A

DISTILLATE OILS/DISTILLED

94
Q

Flashpoint: 121F (49C)

A

DISTILLATE OILS/DISTILLED

94
Q

Flashpoint: 100F (38C)

A

KEROSENE

95
Q

-They provide energy to power utilities, factories, and large ships (power plant, boilers)

A

RESIDUAL OILS

95
Q

-Heavy, thick oils.

A

RESIDUAL OILS

96
Q

-They are also used to heat large buildings.

A

RESIDUAL OILS

97
Q

–a.k.a “BUNKER FUEL”

A

RESIDUAL OILS

97
Q

Flashpoint: 122F (50C)

A

RESIDUAL OILS

98
Q

– it refers to any liquid having a flashpoint below 37.8 °C.

A

FLAMMABLE LIQUIDS

98
Q

CLASSIFICATION OF LIQUID FUELS

A

A. FLAMMABLE LIQUIDS
B. COMBUSTIBLE LIQUIDS

98
Q

– it refers to any liquid having a flashpoint at or above 37.8 °C

A

COMBUSTIBLE LIQUIDS

99
Q

will not cause fire. It is the vapors they produce which burn or explode when exposed to air under the influence of heat.

A

flammable and combustible liquid

100
Q

is the most widely used flammable liquid.

A

GASOLINE

101
Q

-Such fuels flow easily through pipes and are used to provide energy for homes, businesses, and industries.

A

GAS FUELS

101
Q

-It includes natural and manufactured gases.

A

GAS FUELS

101
Q

molecules collide against one another and against the wall of the container and are relatively far from one another.

A

GAS FUEL

102
Q

Matters that has no definite volume and no definite shape.

A

GAS FUEL

102
Q

It is composed of very tiny particles (molecules) at constant random motion in a straight line.

A

GAS FUEL

103
Q

CLASSIFICATION OF GASES
(BASED ON SOURCE)

A
  1. NATURAL GAS
  2. MANUFACTURED GAS
104
Q

-It is usually mixed with compounds of the foul-smelling element sulfur so gas leaks can be detected.

A

NATURAL GAS

104
Q

-Gas is used to heat buildings, cook food, and provide energy for industries.

A

NATURAL GAS

105
Q

-It consists chiefly of methane, a colorless and odorless gas.

A

NATURAL GAS

106
Q

-Butane and propane, which make up a small proportion of natural gas, become liquids when placed under large amounts of pressure.

A

NATURAL GAS

107
Q

-When pressure is released, they change back into gas. Such fuels, often called LIQUEFIED PETROLEUM GAS (LPG) OR LIQUEFIED NATURAL GAS (LNG), are easily stored and Gas shipped as liquids.

A

NATURAL GAS

108
Q

are easily stored and Gas shipped as liquids.

A

LIQUEFIED PETROLEUM GAS (LPG) OR LIQUEFIED NATURAL GAS (LNG)

109
Q

which make up a small proportion of natural gas, become liquids when placed under large amounts of pressure.

A

-Butane and propane

110
Q

ay ineemit ni Biomas dahil sa bacteria

A

METHANE

111
Q

– used as an additive to odorless gases like butane, propane, and petroleum to give them a warning odor

A

ETHANETHOIL/ ETHYL MERCAPTAN

112
Q

-Coal, petroleum, and biomass can all be converted to gas through heating and by various chemical procedures.

A

MANUFACTURED GAS

112
Q

-This gas like synthetic liquid fuels is used chiefly where certain fuels are abundant and others are scarce.

A

MANUFACTURED GAS

113
Q

-Gas can be produced by treating such biomass as animal manure with bacteria called ANAEROBES.

A

MANUFACTURED GAS

113
Q

-Gas can be produced by treating such biomass as animal manure with bacteria called

A

ANAEROBES.

114
Q

CLASSIFICATION OF GASES ACCORDING TO PHYSICAL PROPERTIES

A
  1. COMPRESSED GAS
  2. LIQUEFIED GAS
  3. CRYOGENIC GAS
115
Q

-The bacteria expel methane as they digest the waste.

A

ANAEROBES.

115
Q

ANAEROBES expels

A

METHANE

115
Q
  • A gas which at all normal atmospheric temperature inside its container, exist solely in the gaseous state under pressure.
A

COMPRESSED GAS

116
Q
  • A gas in which, at normal atmospheric temperature inside its container, exist in the liquid state and partly in the gaseous state
A

LIQUEFIED GAS

117
Q
  • A liquified gas which exists in its container at temperature far below normal atmospheric temperature.
A

CRYOGENIC GAS

118
Q

– these are used for treatment and respiratory therapy

A

MEDICAL GASES

118
Q

CLASSIFICATION OF GASES BASED ON USAGE

A
  1. FUEL GASES
  2. INDUSTRIAL GASES
  3. MEDICAL GASES
119
Q

– these are customary used for burning with air to produce heat, which in turn is utilized as power, light and process.

A

FUEL GASES

120
Q

– these are used for industrial processes as those used in welding and cutting.

A

INDUSTRIAL GASES

121
Q

ay sa anesthesia ginagamit

A

CHLOROFORM and NITROUS DIOXIDE

121
Q

When confined in a container:
1. ____ expands when heated.

A

gases

122
Q

is destroyed due to contact with flames.

A

gas container

123
Q

is developed inside the container thus causing container failure.

A

pressure

124
Q

–a.k.a “INVISIBLE KILLER”

A

CARBON MONOXIDE

125
Q

–odorless, tasteless and colorless gas

A

CARBON MONOXIDE

126
Q

OTHER FUELS

A
  1. CHEMICAL FUELS
  2. NUCLEAR FUELS
126
Q

When released:
___ vary with the physical and chemical properties of the gas and the nature of the environment in two, which they are released.

A

Hazards

127
Q

–they are used rocket engines

A

CHEMICAL FUELS

127
Q

All gases, except oxygen, are hazardous to life if they displace the breathing air.
Most odorless and colorless gases are particularly dangerous, as they are not detectable when inhaled.

A

HAZARD OF GAS

128
Q

–used in solid and liquid form

A

CHEMICAL FUELS

129
Q

is the most commonly used nuclear fuel

A

URANIUM

129
Q

–a common rocket fuels is the chemical called

A

HYDRAZINE

130
Q

–provide energy through the fission or fusion of their atoms

A

NUCLEAR FUELS

131
Q

also provide nuclear energy

A

PLUTONIUM

132
Q

–are used namely to generate electricity

A

NUCLEAR FUELS

132
Q

refers to the transfer of energy from one part of a substance to another, or from one body to another by virtue of a difference in temperature (conductor)

A

HEAT

133
Q

-It can be a safety match, a lighted candle, or of more sophisticated forms such as chemical, mechanical, or electrical contrivance designed to start a blaze.

A

IGNITION HEAT

133
Q

-is a device or means to start a fire.

A

IGNITION HEAT

134
Q

-It is a tasteless, odorless colorless gas which is generally found within the Earth’s atmosphere.

A

OXYGEN

135
Q

composes 21 percent by volume or 23.15 percent by weight of the atmosphere;

A

OXYGEN

136
Q

OXYGEN ____ percent by weight of the oceans ____ percent of pure water is oxygen);

A

-85.8 percent by weight of the oceans
88.8 percent of pure water is oxygen);

137
Q

percent by weight of the solid crust of the earth.

A

46.7

137
Q

-and, as an element of most rocks and minerals, 46.7 percent by weight of the solid crust of the earth.

A

OXYGEN

138
Q

THREE PHASES OF FIRE

A
  1. INITIAL / INCIPIENT
  2. FREE BURNING
  3. SMOLDERING
138
Q

___ percent by volume or ____ percent by weight of the atmosphere;

A

21 percent by volume or 23.15 percent by weight of the atmosphere;

139
Q
  • This is the beginning of fire.
A

INITIAL / INCIPIENT

140
Q

-The product of pyrolysis is mainly water vapor and carbon dioxide.

A

INITIAL / INCIPIENT

141
Q

-The base area of the fire has a temperature of 400 to 800 degrees Fahrenheit.

A

INITIAL / INCIPIENT

142
Q

-It is in this stage that fire fighting is easily controlled and subdued.

A

INITIAL / INCIPIENT

143
Q

-This is the acceleration of pyrolytic process.

A

FREE BURNING

143
Q

CHARACTERISTICS:
- normal room temperature
- oxygen plentiful
- thermal updraft rise accumulates at higher point
- temperature at 1000 F
- Producing C02 (carbon dioxide), CO (carbon monoside), SO2 (sulphur dioxide), water and other gases

A

INITIAL / INCIPIENT

144
Q

-It is during this stage that the maximum heat and destructive capabilities of fire develop.

A

FREE BURNING

145
Q

-Thus, combating fire in this stage is very difficult and requires more than one firefighter.

A

FREE BURNING

146
Q

-The thermal column of fire carries destructive gases such as combustible vapor and carbon monoxide.

A

FREE BURNING

147
Q

-The base temperature of the fire is around 800 to 1,000 degrees Fahrenheit and ceiling temperature up to 1,600 degrees Fahrenheit.

A

FREE BURNING

147
Q

CHARACTERISTICS:
- fire has involved more fuel
- oxygen supply has depleted
- heat accumulates at upper area
- temperature exceeds 1,330 F
- area is fully involved

A

FREE BURNING

148
Q

-This stage is where the fire glows and the combustible materials smolder.

A

SMOLDERING

148
Q

-Flames would not be visible, but a large amount of carbon monoxide (smoke) is produced.

A

SMOLDERING

149
Q

-At this point, back draft may occur, wherein the sudden introduction of oxygen with superheated fuel under pressure will cause an explosion.

A

SMOLDERING

149
Q

-This is the reason why masks are essential in firefighting.

A

SMOLDERING

150
Q

DANGEROUS/ FATAL BEHAVIOR OF FIRE:

A
  1. BACKDRAFT
  2. FLASHOVER
  3. BITEBACK
  4. FLASHFIRE
150
Q

-Another threat to those at the fire scene is the presence of carbon monoxide which at some levels may cause death to those exposed to it.

A

SMOLDERING

151
Q

-The sudden and rapid (violent) burning of heated gases in a confined area that occurs in the form of explosion.

A

BACKDRAFT

151
Q

-This may occur because of improper ventilation.

A

BACKDRAFT

151
Q

-The sudden ignition of accumulated radical gases produced when there is incomplete combustion of fuels.

A

FLASHOVER

152
Q

-If room is not properly ventilated, highly flammable vapors maybe accumulated such that when a door or a window is suddenly opened, the room violently sucks the oxygen and simultaneously, a sudden combustion may occur which may happen as an explosion (combustion explosion).

A

BACKDRAFT

152
Q

-heated gas + oxygen =

A

explosion

153
Q

-It is the sudden burning of accumulated free radicals, which is initiated by a spark/flash produced when temperature rises until flash point is reached.

A

FLASHOVER

154
Q

-When accumulated volume of radical gases suddenly burn, there will be a very intense fire that is capable of causing flames to jump at a certain distance in the form of FIREBALLS.

A

FLASHOVER

155
Q

-When accumulated volume of radical gases suddenly burn, there will be a very intense fire that is capable of causing flames to jump at a certain distance in the form of

A

FIREBALLS.

156
Q

can travel to a hundred yards within a few seconds.

A

FIREBALLS

157
Q

-is better known as DUST EXPLOSION.

A

FLASHFIRE

157
Q

–product of backdraft

A

FLASHOVER

158
Q

-This may happen when a metal post that is completely covered with dust is going to be hit by lightning.

A

FLASHFIRE

158
Q

-A fatal condition that takes place when the fire resists the extinguishment operation and becomes stronger and bigger instead.

A

BITEBACK

159
Q

-The dust particles covering the metal burn simultaneously thus creating a violent chemical reaction that produces a very bright flash followed by an explosion.

A

FLASHFIRE