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2. Gasoline - Wikipedia

   en.wikipedia.org/wiki/Gasoline

   Gasoline in a glass jar. Gasoline ( / ˈɡæsəliːn /) or petrol ( / ˈpɛtrəl /) is a petrochemical product characterized as a transparent, yellowish, and flammable liquid normally used as a fuel for spark-ignited internal combustion engines. When formulated as a fuel for engines, gasoline is chemically composed of organic compounds derived ...

3. Chemical formula - Wikipedia

   en.wikipedia.org/wiki/Chemical_formula

   Chemical formula. In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.

4. Formula unit - Wikipedia

   en.wikipedia.org/wiki/Formula_unit

   In chemistry, a formula unit is the smallest unit of a non-molecular substance, such as an ionic compound, covalent network solid, or metal. [1] [2] It can also refer to the chemical formula for that unit. Those structures do not consist of discrete molecules, and so for them, the term formula unit is used. In contrast, the terms molecule or ...

5. Glow stick - Wikipedia

   en.wikipedia.org/wiki/Glow_stick

   A glow stick, also known as a light stick, chem light, light wand, light rod, and rave light, is a self-contained, short-term light-source. It consists of a translucent plastic tube containing isolated substances that, when combined, make light through chemiluminescence. The light cannot be turned off and can be used only once.

6. Acetone - Wikipedia

   en.wikipedia.org/wiki/Acetone

   Acetone (2-propanone or dimethyl ketone) is an organic compound with the formula (CH 3) 2 CO. It is the simplest and smallest ketone (>C=O).It is a colorless, highly volatile and flammable liquid with a characteristic pungent odor.

7. Diesel fuel - Wikipedia

   en.wikipedia.org/wiki/Diesel_fuel

   As a good approximation the chemical formula of diesel is C n H 2n. Note that diesel is a mixture of different molecules. As carbon has a molar mass of 12 g/mol and hydrogen has a molar mass of about 1 g/mol, so the fraction by weight of carbon in EN 590 diesel fuel is roughly 12/14. The reaction of diesel combustion is given by: 2 C n H 2n ...

8. Polypropylene - Wikipedia

   en.wikipedia.org/wiki/Polypropylene

   Infobox references. Polypropylene ( PP ), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer propylene . Polypropylene belongs to the group of polyolefins and is partially crystalline and non-polar.

9. Empirical formula - Wikipedia

   en.wikipedia.org/wiki/Empirical_formula

   In chemistry, the empirical formula of a chemical compound is the simplest whole number ratio of atoms present in a compound. A simple example of this concept is that the empirical formula of sulfur monoxide , or SO, would simply be SO, as is the empirical formula of disulfur dioxide , S 2 O 2 .