definition of bases in science
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What is BASE? Definition of BASE: A class of compounds whose aqueous solutions have a bitter taste and ability to turn litmus blue. They react with acids to form salts. They yield hydroxyl ions when dissolved in water and act as a proton acceptors. BASE: Base has a slippery feel when touched. .
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What is base number - Definition and Meaning Base Number : Base number is the number raised to the power which represents the number of units of a number system. For example, the base number of decimal system is 10. ax here a is base number. 53 here 5 is base number.
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- Also found in: Medical, Wikipedia. (ăm'fətĕr`ĭzm) , in chemistry, the property of certain substances of acting either as acids or as bases depending on the reaction in which they are involved.
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Difference Between Basis and Bases The noun base has several meanings including, 1  The lowest part or edge of something. 2  A conceptual structure or entity on which something depends. 3  A place used as a centre of operations by the armed forces or others.
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- A substance that will neutralise an acid, but does not dissolve in water, is called a base. For example, copper(II) oxide, iron(II) oxide and zinc carbonate are bases, they do not dissolve in water (see salts made from bases or carbonates). Any base that dissolves in water is called an alkali.
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Base (chemistry) In the Lewis model, a base is an electron pair donor. In water, by altering the autoionization equilibrium, bases yield solutions in which the hydrogen ion activity is lower than it is in pure water, i.e., the water has a pH higher than 7.0 at standard conditions. A soluble base is called an alkali if it contains and releases OH − ions quantitatively.
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Base (chemistry) Bases and acids are seen as opposites because the effect of an acid is to increase the hydronium (H3O+) concentration in water, whereas bases reduce this concentration. A reaction between an acid and base is called neutralization. In a neutralization reaction, an aqueous solution of a base reacts with an aqueous solution of an acid to produce a solution of water and salt in which the salt separates into its component ions.
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Arrhenius Base Definition Definition: An Arrhenius base is a substance that when added to water increases the number of OH-ions in the water. Arrhenius bases follow the reaction:
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Base (mathematics) From Wikipedia, the free encyclopedia. In mathematics, a base or radix is the number of different digits or combination of digits and letters that a system of counting uses to represent numbers. For example, the most common base used today is the decimal system. Because dec means 10, it uses the 10 digits from 0 to 9.
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- Definition of NUCLEOTIDE. : any of several compounds that consist of a ribose or deoxyribose sugar joined to a purine or pyrimidine base and to a phosphate group and that are the basic structural units of nucleic acids (as RNA and DNA) — compare nucleoside.See nucleotide defined for kids. ADVERTISEMENT. any of several compounds that consist of a ribose or deoxyribose sugar joined to a purine or pyrimidine base and to a phosphate group and that are the basic structural units of RNA and DNA—compare nucleoside.
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What is an acid? What is a base? In short, an acid is a compound that can give up a hydrogen ion (a proton, H+) in solution. A base is a compound that can accept a proton. If you're looking at chemical equations, the acid will be the compound with more hydrogen atoms.Usually, an acid is positively charged.n short, an acid is a compound that can give up a hydrogen ion (a proton, H+) in solution. A base is a compound that can accept a proton. If you're looking at chemical equations, the acid will be the compound with more hydrogen atoms.
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- A. P = x R. To move air into or out of the lungs we must create pressure differences between the atmosphere and the alveoli. B. To move air into the alveoli we must make alveolar pressure less than atmospheric pressure (except during positive pressure ventilation). (Levitzky Table 2-1).
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Nucleotide Definition in Chemistry Nucleotide Definition: A nucleotide is an organic molecule made up of a nucleotide base, a five-carbon sugar (ribose or deoxyribose) and at least one phosphate group. Nucleotides make up the basic units of DNA and RNA molecules.
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Chapter 10 Chemistry Acids, Bases, and Salts Characteristic properties of bases. - bases conduct an electric current. Note that the terminology used to describe the strength of a base with a high concentration of ions that conducts electricity is called a strong base. Weak bases are poor conductors of electricity and are not highly ionized.
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Base pair A base pair (bp) is a unit consisting of two nucleobases bound to each other by hydrogen bonds. They form the building blocks of the DNA double helix, and contribute to the folded structure of both DNA and RNA.
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- Medical Definition of KILOBASE. : a unit of measure of the length of a nucleic-acid chain (as of DNA or RNA) that equals one thousand base pairs. a unit of measure of the length of a nucleic-acid chain that equals one thousand base pairs.
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- A base can be defined as either a molecule that binds hydrogen ions or a molecule that donates electrons. Ryuta Teshima.
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Acids & Bases in Food Science Scientific Definition: A measure of the acidity or basicity of an aqueous solution. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline. My Definition: The measurement of levels of acidity.
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General Chemistry/Properties and Theories of Acids and Bases Cleaning products like bleach and ammonia are bases. Chemicals that are acidic or basic are an important part of chemistry. Several different theories explain what composes an acid and a base. The first scientific definition of an acid was proposed by the French chemist Antoine Lavoisier in the eighteenth century.
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Acid Definition and Examples Acid Definition in Chemistry. An acid is a chemical species that donates protons or hydrogen ions and/or accepts electrons. Most acids contain a hydrogen atom bonded that can release (dissociate) to yield a cation and anion in water.
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- An acid (from the Latin acidus/acēre meaning sour) is a chemical substance whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red, and the ability to react with bases and certain metals (like calcium) to form salts.Aqueous solutions of acids have a pH of less than 7.he Arrhenius definition defines acids as substances which increase the concentration of hydrogen ions (H +), or more accurately, hydronium ions (H 3 O +), when dissolved in water. The Broensted-Brønsted lowry definition is an: expansion an acid is a substance which can act as a proton. donor
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- Bases are compounds that can readily donate OH-1 ions in water solutions. The role of water is essential in this definition. Pure solids like NaOH must be dissolved in water to act like a base. There are many different bases, but they have something in common.
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Conjugate Base Definition (Chemistry) By Anne Marie Helmenstine, Ph.D. Conjugate Base Definition: A conjugate base is the base member, X-, of a pair of compounds that transform into each other by gaining or losing a proton. The conjugate base gains or absorbs a proton in a chemical reaction. Examples: The chemical reaction between a conjugate acid and a conjugate base is: HX + H 2 O ↔ X − + H 3 O +.
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- Base (geometry) more ... The surface a solid object stands on, or the bottom line of a shape such as a triangle or rectangle. But the top is also called a base when it is parallel to the bottom!
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- Definition: DNA (deoxyribonucleic acid) is a type of macromolecule known as a nucleic acid. It is shaped like a twisted double helix and is composed of long strands of alternating sugars and phosphate groups, along with nitrogenous bases (adenine, thymine, guanine and cytosine).
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base 1 Technically, a material that produces negative ions in solution. A base is the opposite of an acid and has a pH of 7 to 14. A given amount of a base added to the same amount of an acid neutralizes the acid; water and a salt are produced. Alkalis are bases; ammonia is a common base.