CHEMICAL | meaning in the Cambridge English Dictionary

chemical definition: 1. any basic substance that is used in or produced by a reaction involving changes to atoms or…. Learn more.

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Drying agents - UCLA Chemistry and Biochemistry

Mar 21, 2016·The Gibbs free energy for the following reaction Na 2 SO 4 + 10 H 2 O ---- > Na 2 SO 4 * 10 H 2 O can be described by ΔG = ΔH - TDS = -77.8 kJ/mol - T (-261 J/mol*K) Based on this equation, it can be estimated that the reaction reverses at 298 K or 25 o C (ΔG =0). The drying process itself is slightly exothermic (ΔH for the process is negative) but the entropy decreases during the drying ...

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Dissections: Definition & Tools - Video & Lesson ...

Jan 09, 2021·6. Needle. A needle is a fine-pointed tool that can be used to hold the specimen in place as you dissect and study the internal structures. With a sharp point, it can also be used to tease apart ...

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Definition of Boiling Point in Chemistry

May 07, 2019·Types of Boiling Points Boiling point is also known as saturation temperature. Sometimes boiling point is defined by the pressure at which the measurement was taken. In 1982, the International Union of Pure and Applied Chemistry (IUPAC0 defined the standard boiling point as the temperature of boiling under 1 bar of pressure.

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Tweezers - Wikipedia

Tweezers are small tools used for picking up objects too small to be easily handled with the human fingers.The tool is most likely derived from tongs, pincers, or scissors-like pliers used to grab or hold hot objects since the dawn of recorded history.In a scientific or medical context they are normally referred to as forceps.. Tweezers make use of two third-class levers connected at one fixed ...

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Infrared Spectroscopy - Chemistry LibreTexts

Aug 15, 2020·Infrared Spectroscopy. Infrared Spectroscopy is the analysis of infrared light interacting with a molecule. This can be analyzed in three ways by measuring absorption, emission and reflection. The main use of this technique is in organic and inorganic chemistry. It is used by chemists to determine functional groups in molecules.

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The types of levers and the importance of each of them ...

Jun 11, 2014·The types of levers. The First class levers: In our daily life, The first class levers are considered the most popular type of levers. In first class levers, the fulcrum is between the effort force and the resistance. Examples of first-class levers: The pincer, the pliers, the paddle, the scissors, the seesaw, the crowbar, the hammer claw, the ...

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PLIERS | definition in the Cambridge English Dictionary

pliers meaning: 1. a small tool with two handles for holding or pulling small things like nails, or for cutting…. Learn more.

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Google Translate

Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.

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Acronyms and Abbreviations

Acronyms and Abbreviations. The Acronyms section of this website is powered by the Acronym Finder, the web's most comprehensive dictionary of acronyms, abbreviations and initialisms.. The Acronym Finder allows users to decipher acronyms from a database of over 1,000,000 entries covering computers, technology, telecommunications, and the military.

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The types of levers and the importance of each of them ...

Jun 11, 2014·The types of levers. The First class levers: In our daily life, The first class levers are considered the most popular type of levers. In first class levers, the fulcrum is between the effort force and the resistance. Examples of first-class levers: The pincer, the pliers, the paddle, the scissors, the seesaw, the crowbar, the hammer claw, the ...

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The MSDS HyperGlossary: Flash Point

Feb 02, 2020·Definition. Fire safety includes fire signs, tags and labels from Safety Emporium. Flash point is the lowest temperature at which a liquid can gives off vapor to form an ignitable mixture in air near the surface of the liquid. The lower the flash point, the easier it is to ignite the material.

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Chem4Kids: Matter: Definition and Overview

Those atoms go on to build the things you see and touch every day. Matter is defined as anything that has mass and takes up space (it has volume). What is mass? Mass is the amount of matter in an object. You might have a small object with a lot of mass such as a statue made of lead (Pb). You might have a large object with very little mass such ...

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Chem4Kids: Matter: Definition and Overview

Those atoms go on to build the things you see and touch every day. Matter is defined as anything that has mass and takes up space (it has volume). What is mass? Mass is the amount of matter in an object. You might have a small object with a lot of mass such as a statue made of lead (Pb). You might have a large object with very little mass such ...

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Poly- | definition of poly- by Medical dictionary

poly-: 1. Prefix denoting many; multiplicity. Compare: multi- , pluri- . 2. In chemistry, prefix meaning "polymer of," as in polypeptide, polysaccharide ...

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Definition of Volatile - Chemistry Dictionary

Chemistry Dictionary. Definition of Volatile. What is Volatility? A substance is said to be volatile if it boils at a low temperature, changing from the liquid to the gas phase. Substances that are gases at room temperature are extremely volatile: they have high volatility.

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pH Scale - Department of Chemistry

Definition of pH, pOH, and pKw: The concentrations of hydrogen ions and indirectly hydroxide ions are given by a pH number. pH is defined as the negative logarithm of the hydrogen ion concentration. The equation is: pH = - log [H +] similarly, pOH = - log [OH-] and p Kw = - log [Kw] .

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Forceps | Definition of Forceps at Dictionary

Forceps definition, an instrument, as pincers or tongs, for seizing and holding objects, as in surgical operations. See more.

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Pliers - definition of pliers by The Free Dictionary

Define pliers. pliers synonyms, pliers pronunciation, pliers translation, English dictionary definition of pliers. pliers top: needle-nose bottom: slip-joint also ply·er n. 1. One who plies a trade. 2. pliers A variously shaped hand tool having a pair of pivoted jaws,...

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Poly- | definition of poly- by Medical dictionary

poly-: 1. Prefix denoting many; multiplicity. Compare: multi- , pluri- . 2. In chemistry, prefix meaning "polymer of," as in polypeptide, polysaccharide ...

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Vapor Pressure - Purdue University

Vapor Pressure. The Macroscopic View. The vapor pressure of a liquid is the equilibrium pressure of a vapor above its liquid (or solid); that is, the pressure of the vapor resulting from evaporation of a liquid (or solid) above a sample of the liquid (or solid) in a closed container.

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What Is a List of Soft Metals? - Reference

Apr 01, 2020·frankieleon/CC-BY 2.0. According to the Mohs hardness scale, a list of soft metals includes lead, gold, silver, tin, zinc, aluminum, thorium, copper, brass and bronze. Gallium might also be considered a soft metal, as it melts at 85.57 degrees Fahrenheit. Mercury is a metal that's liquid at room temperature. In many cases, a metal's softness is ...

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pliers | 【 2021

With etymological roots in the language Arabic, the term pliers is used to name a tool that allows to take, grasp, mold or cut different elements. Is

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Forceps | Definition of Forceps at Dictionary

Forceps definition, an instrument, as pincers or tongs, for seizing and holding objects, as in surgical operations. See more.

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Drying agents - UCLA Chemistry and Biochemistry

Mar 21, 2016·The Gibbs free energy for the following reaction Na 2 SO 4 + 10 H 2 O ---- > Na 2 SO 4 * 10 H 2 O can be described by ΔG = ΔH - TDS = -77.8 kJ/mol - T (-261 J/mol*K) Based on this equation, it can be estimated that the reaction reverses at 298 K or 25 o C (ΔG =0). The drying process itself is slightly exothermic (ΔH for the process is negative) but the entropy decreases during the drying ...

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Abbreviations and acronyms dictionary

Find out what any acronym, abbreviation, or initialism stands for. With more than 1,000,000 human-edited definitions, Acronym Finder is the world's largest and most comprehensive dictionary of acronyms, abbreviations, and initialisms.

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