Chemistry

When cutting onions what is released in the air that makes a person tear?

More Questions from Chemistry
What are the products of propanoic acid and ethanol when the two are combined with warm sulphuric acid?
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Europium on the periodic table is noted by which symbol?
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Phosphorus and sulfur are the ingredients in what?
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What are the products of acid-base neutralization?
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The study of composition and properties of substances and matter is called?
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Lithium on the periodic table is noted by which symbol?
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What two common ingredients cause an observable chemical reaction when mixed?
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Which type of matter has definite volume but no definite shape?
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