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- Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules...122 KB (12,440 words) - 17:42, 8 June 2024
- Ethanol (also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound with the chemical formula CH3CH2OH. It is...105 KB (10,536 words) - 04:56, 7 June 2024
- Sodium is a chemical element; it has symbol Na (from Neo-Latin natrium) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium...69 KB (8,164 words) - 16:32, 24 May 2024
- Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the formula NH3. A stable binary hydride and the simplest pnictogen hydride, ammonia...138 KB (14,911 words) - 15:33, 5 June 2024
- Hydrogen peroxide is a chemical compound with the formula H2O2. In its pure form, it is a very pale blue liquid that is slightly more viscous than water...91 KB (9,169 words) - 15:38, 18 May 2024
- Carbon dioxide is a chemical compound with the chemical formula CO2. It is made up of molecules that each have one carbon atom covalently double bonded...113 KB (13,063 words) - 21:20, 8 June 2024
- Carbon (from Latin carbo 'coal') is a chemical element; it has symbol C and atomic number 6. It is nonmetallic and tetravalent—meaning that its atoms are...97 KB (10,865 words) - 11:10, 17 May 2024
- Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid (Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral...65 KB (7,197 words) - 08:02, 1 June 2024
- Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2, commonly found in nature as quartz. In many parts of the...62 KB (6,592 words) - 06:52, 19 May 2024
- Chlorine is a chemical element; it has symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in...116 KB (13,008 words) - 15:45, 6 June 2024
- Redox (/ˈrɛdɒks/ RED-oks, /ˈriːdɒks/ REE-doks, reduction–oxidation or oxidation–reduction: 150 ) is a type of chemical reaction in which the oxidation...37 KB (3,565 words) - 03:08, 30 May 2024
- Phosphorus is a chemical element; it has symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus...105 KB (12,349 words) - 02:35, 24 May 2024
- Potassium is a chemical element; it has symbol K (from Neo-Latin kalium) and atomic number 19. It is a silvery white metal that is soft enough to easily...93 KB (10,765 words) - 10:13, 24 May 2024
- Sodium bicarbonate (IUPAC name: sodium hydrogencarbonate), commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula...55 KB (5,288 words) - 06:40, 3 June 2024
- In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound...24 KB (3,185 words) - 02:26, 12 May 2024
- An ion (/ˈaɪ.ɒn, -ən/) is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this...30 KB (3,020 words) - 20:58, 7 May 2024
- Lead is a chemical element; it has symbol Pb (from Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials....173 KB (18,907 words) - 04:12, 31 May 2024
- In chemistry, the molar mass (or molecular weight) (M) of a chemical compound is defined as the ratio between the mass and the amount of substance (measured...18 KB (2,798 words) - 02:49, 24 May 2024
- Methane (US: /ˈmɛθeɪn/ METH-ayn, UK: /ˈmiːθeɪn/ MEE-thayn) is a chemical compound with the chemical formula CH4 (one carbon atom bonded to four hydrogen...88 KB (8,649 words) - 12:55, 5 June 2024
- Acetic acid /əˈsiːtɪk/, systematically named ethanoic acid /ˌɛθəˈnoʊɪk/, is an acidic, colourless liquid and organic compound with the chemical formula...62 KB (6,567 words) - 05:07, 29 May 2024