WorksheetsY9 Problems of Making Materials Practice Test
Total questions: 50
Worksheet time: 25mins
What are the products of complete combustion of hydrocarbons?
Carbon + water
Carbon monoxide + water
Carbon dioxide + water
Methane + hydrogen
Which gas makes up about 78% of dry air?
Carbon dioxide
Oxygen
Nitrogen
Helium
What happens during the greenhouse effect?
The Earth reflects all heat
Greenhouse gases trap infrared radiation
Sunlight disappears
No radiation escapes
Which renewable energy resource depends on sunlight?
Wind
Solar panels
Wave power
Geothermal
Which gas is mainly responsible for acid rain from power stations?
Hydrogen
Carbon monoxide
Sulfur dioxide
Methane
What does biodegradable mean?
Breaks down by microorganisms
Cannot break down
Melts when heated
Is always toxic
Which gas formed in engines contributes to nitric acid in acid rain?
Nitrogen oxides
Helium
Argon
Oxygen
Why is carbon monoxide dangerous?
It smells strong
It is very heavy
It prevents oxygen binding in blood
It turns into helium
Which of the following is a compound?
Oxygen
Nitrogen
Carbon dioxide
Helium
Which symbol equation shows complete combustion of methane?
CH₄ → C + H₂
CH₄ + O₂ → CO + H₂O
CH₄ + 2O₂ → CO₂ + 2H₂O
CH₄ + CO₂ → H₂O
PFAs are called “forever chemicals” because:
They are harmless
They break down easily
They do not break down naturally
They dissolve quickly
What are particulates?
Tiny solid particles in the air
Drops of water
Metal dust only
Very large solid pieces
Which gas is a major greenhouse gas?
Argon
Helium
Carbon dioxide
Neon
Which of the following is a fossil fuel?
Solar
Wind
Coal
Geothermal
Which of the following is part of the fire triangle?
Nitrogen
Heat
Salt
Carbon dioxide
Microplastics are:
Plastics used in microwaves
Plastic pieces smaller than 5 mm
Liquid plastics
Plastic dissolved in water
Why are catalytic converters used in cars?
To reduce harmful emissions
To increase engine noise
To increase fuel use
To produce more particulates
What does a chemical formula show?
The melting point
The texture
The elements and number of atoms
The colour
Which gas is not a greenhouse gas?
Nitrogen
Water vapour
Methane
Carbon dioxide
Which gas contributes to acid rain from vehicles?
Nitrogen oxides
Helium
Argon
Neon
A yellow, smoky flame indicates:
Complete combustion
No combustion
Combustion of metals
Incomplete combustion
Which energy source is renewable?
Oil
Natural gas
Wind
Coal
Burning plastics can be harmful because it releases:
Only steam
Pure oxygen
Toxic gases
Only carbon dioxide
Which of these is an element?
H2O
O2
CO2
NaCl
Which equation shows hydrogen combustion?
H2 + O2 → H2O
H + O2 → H2O2
H2 + CO2 → H2O
H2 + O → H2O
What are the products of hydrogen combustion?
Water only
Water + carbon
Hydrogen + oxygen
Carbon monoxide
Which best describes recycling?
Burning waste
Using something without changing it
Turning waste into new materials
Burying waste
Which activity increases greenhouse gases?
Burning fossil fuels
Recycling metals
Planting trees
Using wind turbines
Which gas forms sulfuric acid in acid rain?
Oxygen
Carbon monoxide
Sulfur dioxide
Helium
What are microplastics mainly harmful to?
Clouds
Wildlife and oceans
Solar panels
Cars
What happens if you remove one part of the fire triangle?
It burns hotter
The fire stops
It burns faster
The fire spreads
Oxygen makes up approximately what percentage of dry air?
10%
1%
21%
78%
What is landfill?
Burying rubbish underground
Burning rubbish for fuel
Melting plastics
Reusing materials
Which gas is released during complete combustion?
Sulfur dioxide
Carbon dioxide
Nitrogen
Hydrogen
Which best describes upcycling?
Turning waste into a more valuable product
Burying materials
Burning old items
Melting plastic into pellets
Which activity reduces air pollution?
More diesel cars
Low Emission Zones
Burning more fuel
Removing bike lanes
Incomplete combustion produces:
Pure hydrogen
Only carbon dioxide
Carbon monoxide or carbon
Nitrogen
Infrared radiation is:
Heat energy
Sound
Gamma radiation
Electricity
Which gas in the atmosphere forms nitrogen oxides in engines?
Neon
Nitrogen
Carbon dioxide
Argon
Which gas is responsible for most enhanced greenhouse effect?
Helium
Carbon dioxide
Argon
Neon
Which symbol represents carbon monoxide?
C₂O
CO
CO₂
C₂O₂
Which is a disadvantage of fossil fuels?
They are renewable
They run out and cause pollution
They never release CO₂
They produce only water
What are plastics generally made from?
Fossil fuels
Metals
Sand
Carbon dioxide
Which describes reusing?
Turning waste into new products
Using an item again without changing it
Burning waste
Melting plastic
The equation SO₂ + O₂ → SO₃ describes:
Metal combustion
Formation of sulfur trioxide
Methane production
Electrolysis
Which harmful effect is linked to particulate pollution?
Improved visibility
Heart and lung problems
Stronger bones
Increased oxygen levels
Which gas forms nitric acid when dissolved in rainwater?
Nitrogen oxides
Hydrogen
Methane
Argon
Which description fits a material?
A substance used to make things
Only a gas
Only a liquid
A living organism
Which renewable energy resource uses wind turbines?
Nuclear
Biomass
Wind
Oil
The word equation for complete combustion of methane is:
Methane → carbon + hydrogen
Methane + oxygen → carbon monoxide + water
Methane + oxygen → carbon dioxide + water
Methane + oxygen → sulfur dioxide
