Engines & Burning Fuels
Oxidation
Fire Safety
Air Pollution
Global Warming
100
What is another word for combustion?
Burning
100
What reaction happens when a substance reacts with oxygen?
Oxidation
100
Name three things in the fire triangle
Heat, Fuel, & Oxygen
100
What is pollution?
Damage to the environment
100
What gas is the main greenhouse gas we studied?
Carbon dioxide (CO2)
200
What gas is needed for combustion to happen?
Oxygen
200
What forms when iron reacts with oxygen and water?
Rust
200
What hazard symbol is this
?
Explosive
200
What type of combustion makes carbon monoxide and soot?
Incomplete combustion
200
What effect traps heat in the atmosphere?
Greenhouse effect
300
What element is released when hydrogen burns with oxygen?
Water
300
Metal + oxygen makes a metal __________
Oxide
300
What type of reaction releases heat to the surroundings?
Exothermic
300
Hydrocarbons like petrol and diesel sometimes contain substances that make the fuel not pure. What do we call these other substances?
Impurities
300
What do we call the increase in Earth’s temperature?
Global warming
400
What type of fuel contains only hydrogen and carbon?
Hydrocarbon
400
Is rusting fast or slow compared to burning?
Slow
400
Why do oxidising substances make fires more dangerous?
Add more oxygen
400
Name one acidic/harmful gas in acidic rain
sulfur dioxide / nitrogen oxide
400
Where does most of Earth's heat energy come from?
Sun ☀️
500
What do rockets carry to allow combustion in space?
Oxidising agent (or oxygen supply)
500
What law says mass is not created or destroyed in reactions?
Law of Conservation of Mass
500
Which extinguisher is used for electrical fires?
Carbon dioxide (CO2)
500
What device in cars changes harmful gases to safer ones?
Catalytic converter
500
What greenhouse gas does the thermal decomposition of cement produce?
Carbon dioxide (CO2)