Quiz Monkey
What do you want to know?
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Quiz Monkey |
| Water is densest at |
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4°C (39.2°F) | |
| Acid that vinegar is an impure dilute solution of |
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Acetic | |
| Formula C2H2; produced by the Wohler process (combining water and calcium carbide); a.k.a. ethyne |
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Acetylene | |
| Produced when the enzyme zymase acts on glucose |
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Alcohol | |
| Alanine, aspargine, glycine, leucine, lysine, methionine and tyrosine are examples of |
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Amino acids | |
| Mixture of hydrochloric acid (75%) and nitric acid (25%) that can dissolve gold |
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Aqua regia | |
| To make a classroom volcano, you would add vinegar to (which other kitchen staple?) |
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Baking soda | |
| Used in a barium meal or enema |
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Barium sulphate | |
| The "opposite" of an acid – a chemical compound that donates hydrogen ions, or absorbs hydrogen ions when dissolved in water; reacts with an acid to produce water and a salt |
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Base |
| First isolated by Faraday in 1825; structure discovered in 1865 by the German chemist Friedrich August Kekulé; gives its name to the "ring" structure found in many organic compounds |
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Benzene | |
| Drug used to regulate the heartbeat, invented in the 1950s by Nobel laureate James Black (of ICI); propanolol was the first to be marketed |
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Beta blockers | |
| Characteristic smell of (hydrogen) cyanide |
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Bitter almonds | |
| Common use for calcium hypochlorite (a.k.a. chloride of lime) |
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Bleach | |
| Colour of copper sulphate (crystals) |
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Blue | |
| Traditionally supposed to have been added to the tea drunk by British servicemen, to suppress the libido |
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Bromide | |
| Colour of nitrous oxide |
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Brown | |
| The major chemical constituent of limestone, chalk, marble, etc.; also of eggshells, snails' shells and pearls |
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Calcium carbonate | |
| Calcite is the most common form of (aragonite and vaterite are other forms) | |||
| Major chemical constituent of bones |
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Calcium phosphate | |
| Gas that makes bread rise (produced by fermenting yeast); given off when baking powder is heated or moistened |
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Carbon dioxide | |
| Dry ice is the solid form of | |||
| Pumped into water to make it fizzy (see carbonic acid) | |||
| Acid that makes soft drinks fizzy |
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Carbonic |
| Acid found in oranges, lemons etc. |
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Citric | |
| Organic compounds formed by chemical reaction between acids and alcohols |
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Esters | |
| Principal solvent in a tincture |
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Ethyl alcohol | |
| Principal use of calcium nitrate |
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Fertiliser | |
| Acid found in bee and ant stings – also ("possibly" – and in the hairs (technically trichomes) of stinging nettles |
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Formic | |
| Sugar found in fruits |
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Fructose | |
| Invented, according to legend, around 1000 AD when a Chinese cook mixed saltpetre, sulphur and charcoal |
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Gunpowder | |
| Compounds containing only carbon and hydrogen |
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Hydrocarbons | |
| Acid found in the human stomach; historically called acidum salis, muriatic acid ('acid pertaining to brine or salt'), or spirits of salt; vaporises if there is around 60% or less of water |
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Hydrochloric acid | |
| Acid that cannot be kept in glass, because it dissolves it |
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Hydrofluoric | |
| Odorous gas with a characteristic smell of rotten eggs – used in stink bombs |
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Hydrogen sulphide |
| Benzene hexachloride (BHC): used by gardeners as |
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Insecticide | |
| Acid found in milk (particularly when it sours) |
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Lactic | |
| Sugar found in milk |
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Lactose | |
| Mixture of dyes, extracted from lichens, absorbed onto filter paper and used to test for pH (turns red in acid, blue in alkali) |
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Litmus | |
| Organic compound, solid at room temperature, mainly responsible for the characteristic aroma and flavour of peppermint and other mints; can be made synthetically |
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Menthol | |
| Main constituent of natural gas |
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Methane | |
| Known to miners as firedamp; caused much loss of life in coal mines, before the invention of the Geordie lamp and Davy lamp | |||
| Food additive widely used in Chinese cooking – said to be responsible for "Chinese restaurant syndrome" |
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Monosodium glutamate | |
| Made by adding a mixture of naphthenic and palmitic acids to petrol or diesel fuel |
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Napalm | |
| Toxic alkaloid with the chemical formula C10H14 N2 |
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Nicotine | |
| Poisonous constituent of rhubarb leaves (also found in wood sorrel and other plants, and used in dying and bleaching) |
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Oxalic acid | |
| Formed by the action of ultraviolet light (or electrical discharges) on oxygen (O2); formed at ground level by lightning |
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Ozone | |
| Alternative name for carbolic acid (C6H5OH) – also used for any one of a class of organic compounds of which this is the simplest member |
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Phenol | |
| Poison used in the fatal attack on Bulgarian dissident writer and BBC World Service journalist Georgi Markov, in London 1978 |
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Ricin | |
| Class of compounds made up of cations (positively charged) and anions (negatively charged) – typically formed (often along with water) when an acid reacts with a base or a metal |
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Salts | |
| Nerve gas used in the attack on the Tokyo subway in 1995 (12 people died) |
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Sarin | |
| Acid commonly used in car batteries – also known as oil of vitriol |
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Sulphuric | |
| Acid classified with the E–number E–334, used in soft drinks and confectionery to give a fruit flavour; also used in baking powder |
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Tartaric | |
| Green coating that appears on copper, brass or bronze as it weathers (usually copper carbonate, sometimes copper chloride or copper acetate) |
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Verdigris | |
| Result of adding an acid to a base |
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Water and a salt | |
| Products of burning pure hydrocarbons |
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Water, Carbon dioxide | |
© Haydn Thompson 2017–25