Chapter One

Question 1

The difference between a physical change and a chemical change

Answer 1

Physical changes shape it chemically stays the same, chemical change is when a substance changes into another substance it chemically changes

Question 2

The difference between potential and kinetic energy

Answer 2

Kinetic energy is actively being released and potential energy is stored energy

Question 3

Two common methods used to measure energy and heat

Answer 3

British thermal unit BTUs (heat) and joules (energy)

Question 4

The difference between a fire triangle and a fire tetrahedron

Answer 4

The fire triangle does not include the chemical reaction

Question 5

Types of energy

Answer 5

Chemical, thermal, mechanical, electrical, light, nuclear, and sound

Question 6

Physical science is the study of what

Answer 6

Matter energy chemistry and physics

Question 7

Can oxidizers combust on their own

Answer 7

No they’re non-combustible

Question 8

What is known as a potential energy available for release in the combustion process

Answer 8

Heat of combustion

Question 9

What are carbon-based fuels

Answer 9

Wood and cotton

Question 10

What are hydrocarbon fuels

Answer 10

Plastics and synthetic fabrics

Question 11

What are the effects of carbon monoxide and hydrogen cyanide exposure

Answer 11

Asphyxiation

Question 12

Five classes of fuels

Answer 12

Class A ordinary
Class B flammable and combustible liquids and gases Class C energized electrical equipment
Class D metals
Class K oils and greases

Question 13

How do heat release rate and temperature differ

Answer 13

Temperature measures Heat, he is the thermal kinetic energy needed to release a fuels potential chemical energy

Question 14

How do different sources of thermal energy result in ignition

Answer 14

Chemical electrical and mechanical are often the sources of ignition they all can transfer heat

Question 15

Heat transfer through solid objects

Answer 15

Conduction

Question 16

Heat transfer of thermal energy

Answer 16

Convection

Question 17

Heat transfer of energy as electromagnetic waves

Answer 17

Radiation

Question 18

Product of incomplete combustion of organic materials

Answer 18

CO carbon monoxide

Question 19

Product of combustion of materials containing nitrogen ( polyurethane foam)

Answer 19

Hydrogen cyanide HCN with lower concentrations of CO

Question 20

HCN is ____ times more toxic than CO

Answer 20

35

Question 21

What prevents the body from using oxygen at the cellular level, it can be inhaled absorbed or ingested

Answer 21

HCN

Question 22

What is a product of complete combustion of organic materials and displaces existing oxygen in acts as a respiratory stimulant

Answer 22

Carbon dioxide CO2

Question 23

This measures the force per unit of an area applied perpendicularly to a surface

Answer 23

Pressure

Question 24

What’s the example used for the difference between temperature and heat release rate

Answer 24

One candle versus ten candles

Question 25

What type of energy is produced by oxidization

Answer 25

Thermal energy/ chemical

Question 26

What is it called when the electric current flowing through a conductor produces Heat

Answer 26

Resistance Heating

Question 27

When the current flows through a conductor and exceeds design limit such as through a extension cord

Answer 27

Overcurrent or overload

Question 28

Friction or compression generated energy

Answer 28

Mechanical

Question 29

When heat naturally returns to a state and transfers from a warmer object to a cooler object

Answer 29

Thermal equilibrium

Question 30

Convection depends on three factors

Answer 30

Area being heated, turbulence and velocity of gases, and the difference between the fluid or gas in the material being heated