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Grade 8: Chemistry of the Environment

Across
The loss of oxygen
Gas produced by the decomposition of vegetation
The gain of oxygen
A buildup of these gases in the atmosphere can cause global warming
Air is an example
Type of rain caused by sulfur dioxide emissions
Process by which plants convert carbon dioxide into energy and oxygen
Most common compound on Earth
A natural process by which carbon dioxide can be released into the atmosphere
Gas that makes up 78% of the Earth's atmosphere.
Used in tungsten light bulbs
Added during treatment of water to kill microbes and bacteria
Speeds up a chemical reaction
Down
Added to fertilisers to promote healthy growth of plants
An adverse (negative) change to the environment caused by human influence
Burning in oxygen
Coating iron with zinc
The type of reaction that occurs in a catalytic converter
A catalyst used in a catalytic converter
Element added to fertilisers to promote strong growth of roots
Lowest layer of the atmosphere
Type of water used in laboratory experiments
Oxidation of iron
The type of energy stored in fossil fuels
Type of fossil fuel
Wind and solar energy are examples of this type of energy
Molecule where two of the same atoms are bonded together
A combination of iron and carbon