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1) |
Matter is anything that:
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2) |
The three states of matter are:
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3) |
Which of the following is an example of a physical change?
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4) |
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5) |
Chemical and physical changes almost always involve an exchange of energy.
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6) |
A fuels potential energy is released during combustion and converted to:
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7) |
Reactions that give off energy as they occur are better known as:
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8) |
What is an example of an endothermic reaction?
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9) |
Fire is an exothermic chemical reaction called:
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10) |
Liquid or solid fuels must always be vaporized before flaming combustion.
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11) |
Which of the following is the best explanation for smoldering combustion?
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12) |
___________ will cease if the self sustained chemical reaction of flaming combustion is inhibited or interrupted.
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13) |
Heat is also known as temperature.
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14) |
Energy is:
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15) |
In the International System of Units, heat is measured in:
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16) |
The _____ is the amount of heat required to raise the temperature of 1 pound of water 1 degree Fahrenheit.
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17) |
Celcius is used in the metric system, whereas Fahrenheit is used in the _______.
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18) |
The chemical decomposition of a substance through heat is better known as:
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19) |
The two forms of ignition include:
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20) |
In autoignition, the surface of a substance must be heated to its _____ in order for combustion to occur.
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21) |
________ is the most common source of heat in combustion reactions.
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22) |
self-heating, aka spontaneous heating, is a form of:
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23) |
Resistance heating, overcurrent, arcing, and sparking are all examples of________.
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24) |
the three ways heat can be transferred are conduction, convection, and __________.
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25) |
heat of friction and heat of compression are examples of electrical energy.
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26) |
Which of the following forms of heat transfer is the most dominant in the spread of fire?
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27) |
the mushrooming effect can best be explained by the effects of:
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28) |
Liquids have:
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29) |
gases have:
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30) |
specific gravity is the density of gases in relation to air.
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31) |
The atmosphere exerts a pressure of _____.
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32) |
Fuel is also known as:
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33) |
which of the following gases has a vapor density that would cause it to sink?
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34) |
Materials that absorb heat, but do not actively participate in the combustion reaction are known as:
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35) |
hydrocarbon fuels do not readily mix with water, whereas polar solvents do.
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36) |
_______ describes the extent at which a substance will mix with water.
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37) |
A material that will mix with water in any proportion is known as:
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38) |
A big log has a high surface to mass ratio, whereas sawdust has a low surface to mass ratio.
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39) |
as the surface to mass ratio increases, fuel becomes _______ to ignite.
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40) |
The total amount of heat energy released when a specific amount of fuel is burned is known as the:
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41) |
oxidizers are highly combustible.
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42) |
An electrical fire is an example of:
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43) |
Which class of fire is extinguishable by appropriately applied foam or dry chemicals?
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44) |
Burning titanium, aluminum, magnesium or potassium is an example of a _______ fire.
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45) |
During the incipient stage of fire, it is usually ________ controlled.
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46) |
Thermal layering is a characteristic of the _______ stage.
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47) |
the most defining moment that transitions a fire from a growing fire to fully developed is usually:
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48) |
When the temperature in a compartment results in the simultaneous ignition of all combustible materials in the space is known as a:
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49) |
In a compartment full of incomplete combustibles, sudden introduction of oxygen may induce:
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50) |
Buildings with premature backdraft characteristics should be:
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