Adjectivechemical (not comparable) Positive chemical Superlative none (absolute)
Derived terms
From Wiktionary under the GNU Free Documentation License. A chemical substance is a material with a specific chemical composition. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Some typical chemical substances are diamond, gold, salt (sodium chloride) and sugar (sucrose). Generally, chemical substances exist as a solid, liquid, or gas, and may change between these phases of matter with changes in temperature or pressure. Chemical reactions convert one chemical substance into another. Forms of energy, such as light and heat, are not considered to be matter, and thus they are not "substances" in this regard. From Wikipedia under the
GNU Free Documentation License What is the chemical substance that is released in the synapse? Q. At the end of a neuron, there is a bit gap between Axon ending and the dendrites of the other neuron. This place is called synapse. Here, the electrical impulse are transmitted to other neuron by means of chemical signal. I want to know, what actually the chemical is and how does it carry the information. Asked by rushofmusic92 - Mon Aug 25 11:46:54 2008 - - 1 Answers - 0 Comments A. acetylcholine The release of a neurotransmitter is triggered by the arrival of a nerve impulse (or action potential) and occurs through an unusually rapid process of cellular secretion, also known as exocytosis: Within the presynaptic nerve terminal, vesicles containing neurotransmitter sit "docked" and ready at the synaptic membrane. The arriving action potential produces an influx of calcium ions through voltage-dependent, calcium-selective ion channels at the down stroke of the action potential (tail current). Calcium ions then trigger a biochemical cascade which results in vesicles fusing with the presynaptic membrane and releasing their contents to the synaptic cleft within 180uesec of calcium entry. Vesicle fusion is driven by the… [cont.] Answered by OKIM IM - Mon Aug 25 11:53:04 2008 What chemical reactions are involved in photography? Q. I need to write a research paper about the chemical reactions involved in photography, how they are used in photography, and any environmental problems these reactions might cause. If you know anything about this, please tell me. Thanks! Asked by Anonymous - Fri Jul 4 22:53:24 2008 - - 3 Answers - 0 Comments A. There in one chapter in this book that may answer some of your questions: Answered by yayu - Mon Jul 7 10:35:29 2008 What chemical was suggested as a way of chemically castrating sexual predators by Governor Pete Wilson?
Q. Does anyone know what the actual chemical was called? I've been looking for it for like an hour and I can't find it. Asked by Naomi - Tue Apr 8 02:51:25 2008 - - 1 Answers - 0 Comments A. depovera is usually used just surgically castrate them and have it over Answered by Sidney S - Wed Apr 9 11:03:06 2008 From Yahoo Answer Search: "chemical"  news.google.com Chicago Tribune buyer beware: The evidence is mixed on resveratrol, a chemical that is found in grapes, peanuts and blueberries and is abundant in red wine. ... news.google.com Reuters Survey Shows Top Chemical Companies Ready for Unified Approach to Managing Regulatory Complexity falls church, Va., Nov. 4 /PRNewswire/ -- A new survey ... and more » news.google.com BBC News A gym in Bournemouth was evacuated after a male member of staff was overcome by fumes from a chemical leak. Six fire engines and at least 30 firefighters ... Club cleared in chemical leak TeleText all 4 news articles » From Google News Search: "chemical"  scisys.co.uk 463px x 685px | 66.30kB [source page] A British soldier using a Chemical Agent Monitor Back to nbc bisa technologies  uregina.ca 480px x 640px | 62.50kB [source page] Chemical workers discuss their next steps in the removal process  photoblogsmagazine.org 450px x 600px | 64.80kB [source page] chemical portrait jpg 24 May 2006 16 27 7k chemical photo thumb > 10 Jul 2006 07 27 7k chemical photo jpg 24 May 2006 16 27 65k chemical php 24 May 2006 16 29 5k From Yahoo Image Search: "chemical"  babyandbump.com Beadette Fri, 06 Nov 2009 16:49:07 GM Hi everyone, Please ignore my ignorance but I have come across posts where people are talking about . chemical. pregnancies and I have no idea wht this is. Could someone please shed some light for me???  detailingbliss.com cleanfiend Wed, 04 Nov 2009 23:36:19 GM i just got my small order of cwg and speedwipe, both in 16oz. I was wondering if . chemical. guys usually ships a sprayer top with their quick detailers.  yosemite.epa.gov unknown ue, 03 Nov 2009 15:40:57 GM 2, 2009) U.S. Environmental Protection Agency Region 5 has extended its comment period on a proposed EPA and Michigan Department of Environmental Quality agreement with the Dow . Chemical. Co. The agreement outlines the next steps in a ... From Google Blog Search: "chemical" |
