Some early scientists such as Georg Ernst Stahl ( 1659-1734 ) and Francisque Bouillier ( 1813 – 1899 ) had supported a form of animism which life and mind, the directive principle in evolution and growth, holding that all cannot be traced back to chemical and mechanical processes, but that there is a directive force which guides energy without altering its amount.

Some chemical reactions, like those used to produce the active ingredients for the popular statin drugs, must occur at low temperatures of approximately − 100 ° C ( about-148 ° F ).

Some limestones do not consist of grains at all, and are formed completely by the chemical precipitation of calcite or aragonite, i. e. travertine.

Some common environments include dry, wet, cold, hot, fire risk, high load, high or low speed, chemical compatibility, atmospheric compatibility, pressure or vacuum and various combinations.

Some enzymes act on other proteins to add or remove chemical groups in a process known as posttranslational modification.

* Some chemical reactions in paint involve the orientation of the paint molecules.

Some authorities think it is less confusing as the word is used to describe any chemical or crystal with oxidized titanium such as the rare earth titanate pyrochlores series and many of the minerals with the perovskite structure.

Some chemical theorists apply statistical mechanics to provide a bridge between the microscopic phenomena of the quantum world and the macroscopic bulk properties of systems.

Some fluid system designs, especially in chemical or power plants, are schematically represented in piping and instrumentation diagrams.

Some hazardous waste generators are larger companies such as chemical manufacturers, electroplating companies, and oil refineries.

Some practical advances already available to consumers are bullet-resistant garments made with kevlar and stain-resistant fabrics that are coated with chemical mixtures that reduce the absorption of liquids.

Some aquatic leeches locate hosts by sensing movement and only attach when certain temperature and chemical cues are present.

Some of the tools are made of obsidian which chemical analysis indicates came from sources near present day Teton Pass, south of Grand Teton National Park.

Some modify the makeup of the butter's fat through chemical manipulation of the finished product, some through manipulation of the cattle's feed, and some by incorporating vegetable oils into the butter.

Some of these, such as iodine, are blamed for allergic responses, although testing results in some patients show no signs of allergy to the suspect chemical.

Some criticize the process, stating that these new high-yielding crops require more chemical fertilizers and pesticides, which can harm the environment.

Some plants produce natural herbicides, such as the genus Juglans ( walnuts ), or the tree of heaven ; such action of natural herbicides, and other related chemical interactions, is called allelopathy.

In fact, the first patent for the use of double gussets in a diaper was in 1973 by the Procter & Gamble Company Some diapers lines now commonly include wetness indicators, in which a chemical included in the fabric of the diaper changes color in the presence of moisture to alert the carer or user that the diaper is wet.

* Some chemical compounds containing sodium.

Some US policymakers and scientists involved in the project felt that radiological weapons would qualify as chemical weapons and thus violate international law.

Some oil companies also have chemical divisions.

Some chemical compounds made from petroleum are also obtained from other fossil fuels, such as coal or natural gas, or renewable sources such as corn or sugar cane.

Some castrates report mood changes, such as depression or a more serene outlook on life, although this might not be to chemical changes but instead emotional changes due to the implications of the procedure.

Some of the Surveyors also had alpha scattering instruments and magnets, which helped determine the chemical composition of the soil.

Some of the previously reported compounds have thus been reformulated and a series of new hydrido and carbonyl compounds discovered, the more representative examples being Af, Af, Af, Af and Af ( Af ).

Some may suggest that it is probably advisable to use mouthwash at least an hour after brushing with toothpaste when the toothpaste contains sodium lauryl sulfate, since the anionic compounds in the SLS toothpaste can deactivate cationic agents present in the mouthrinse.

Some non-benzene-based compounds called heteroarenes, which follow Hückel's rule, are also aromatic compounds.

Some authors classify as pseudoalkaloids such compounds such as ephedrine and cathinone.

Some compounds are quite specific, causing reversions in just one or two strains.

Some antioxidants are only found in a few organisms and these compounds can be important in pathogens and can be virulence factors.

Some compounds contribute to antioxidant defense by chelating transition metals and preventing them from catalyzing the production of free radicals in the cell.

Some compounds have very high boiling points.

Some compounds have high boiling points as well as being air sensitive.

Some soil bacteria use organic nitrogen-containing compounds as a source of carbon, and release ammonium ions into the soil.

Some fatty acids are essential nutrients, meaning that they can't be produced in the body from other compounds and need to be consumed in small amounts.

Some complexed organic germanium compounds are being investigated as possible pharmaceuticals but none has had success.

Some well-known species give off a red color from carotenoid compounds.

Some structures are adopted by a number of compounds ; for example, the structure of the rock salt sodium chloride is also adopted by many alkali halides, and binary oxides such as MgO.

Some sources suggest that there are about ten million known compounds.

Some intermetallic materials e. g. do exhibit metal clusters, reminiscent of molecules and these compounds are more a topic of chemistry than of metallurgy.

Some compounds, are considered to be sources of " CH < sub > 3 </ sub >< sup >+</ sup >," and this simplification is used pervasively in organic chemistry.

Some organic compounds melt through mesophases, states of partial order between solid and liquid.

Some neodymium compounds have colors which vary based upon the type of lighting.

Some dietitians recommend that these be supplied from foods in which they occur naturally, or at least as complex compounds, or sometimes even from natural inorganic sources ( such as calcium carbonate from ground oyster shells ).

Some are produced by the human body with adequate precursors ( glutathione, Vitamin C ), and those the body cannot produce may only be obtained in the diet via direct sources ( Vitamin C in humans, Vitamin A, Vitamin K ) or produced by the body from other compounds ( Beta-carotene converted to Vitamin A by the body, Vitamin D synthesized from cholesterol by sunlight ).

Some organic compounds, especially symmetrical ones, sublime, that is they evaporate without melting.