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Grade 8: Chemistry of the Environment

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