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Slovní zásoba pro IELTS Academic (Skóre 8-9) - Chemistry

Zde se naučíte některá anglická slova související s chemií, která jsou nezbytná pro zkoušku Academic IELTS.

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Vocabulary for Academic IELTS (8)
solute
[Podstatné jméno]

a substance that is dissolved in a solvent, resulting in a solution

rozpuštěná látka, rozpustná látka

rozpuštěná látka, rozpustná látka

Ex: Dissolving a pain reliever ( e.g. , aspirin ) in water results in the drug acting as solute in the liquid solvent .
reactant
[Podstatné jméno]

a substance that takes part in and undergoes a chemical reaction, leading to the formation of new products

reaktant, reagens

reaktant, reagens

Ex: When iron reacts with sulfur , reactants are iron and sulfur .
catalyst
[Podstatné jméno]

(chemistry) a substance that causes a chemical reaction to happen at a faster rate without undergoing any chemical change itself

katalyzátor, zrychlovač

katalyzátor, zrychlovač

Ex: In the Haber process , iron is used as catalyst to promote the synthesis of ammonia from nitrogen and hydrogen gases .
catalysis
[Podstatné jméno]

the acceleration or facilitation of a chemical reaction by a substance (catalyst) that remains unchanged at the end of the reaction

katalýza, katalytická reakce

katalýza, katalytická reakce

Ex: Zeolites act as catalysts in refining processes , promoting catalysis of hydrocarbons into valuable products .
covalent bond
[Podstatné jméno]

a chemical bond where atoms share electrons to form a stable molecule

kovalentní vazba, covalentní spojení

kovalentní vazba, covalentní spojení

Ex: The air 's like a molecular community , held together covalent bonds, forming a breathable atmosphere .
isomer
[Podstatné jméno]

any of two or more compounds having the same molecular formula but different arrangements of atoms and, consequently, different properties

izomera, izomer

izomera, izomer

Ex: The amino acid isoleucine and the sugar maltose are examples isomers with identical molecular formulas but differing chemical structures .
polymer
[Podstatné jméno]

a large molecule composed of repeating structural units, or monomers, covalently bonded together in a chain-like structure

polymer, polymér

polymer, polymér

Ex: Polyester is a versatile polymer used in fabrics , clothing , and plastic bottles .
monomer
[Podstatné jméno]

a molecule that can chemically bond with other molecules to form a polymer

monomer, molekula monomeru

monomer, molekula monomeru

Ex: Styrene is monomer used in the production of polystyrene , a common plastic and insulation material .
hydrocarbon
[Podstatné jméno]

a compound composed of hydrogen and carbon atoms, with the simplest form being alkanes, alkenes, or alkynes

hydrokarbon, uhlovodík

hydrokarbon, uhlovodík

Ex: Benzene (C₆H₆) is an aromatic hydrocarbon, exhibiting a ring structure with alternating single and double bonds.
ester
[Podstatné jméno]

a chemical compound derived from the reaction between an alcohol and an organic acid, typically with the elimination of water

ester, esterová sloučenina

ester, esterová sloučenina

Ex: Ethyl propionate is ester with a fruity odor and is used as a flavoring agent in the food industry .
aldehyde
[Podstatné jméno]

an organic compound with a carbonyl group (C=O) bonded to a hydrogen atom and another carbon atom, commonly found in essential oils and used in various chemical processes

aldehyd, alifatický aldehyd

aldehyd, alifatický aldehyd

Ex: Formaldehyde is a aldehyde used in various industrial applications , including the production of resins .
alcohol
[Podstatné jméno]

a compound with a hydroxyl group (-OH) attached to a carbon atom, widely used as solvents, fuels, and in pharmaceutical and chemical synthesis

alkohol, alkoholický compound

alkohol, alkoholický compound

Ex: alcohol is used in the production of fragrances , flavorings , and as a solvent in various applications .
ketone
[Podstatné jméno]

an organic compound with a carbonyl group (C=O) bonded to two carbon atoms, commonly found in solvents, pharmaceuticals, and flavorings

keton, ketonová sloučenina

keton, ketonová sloučenina

Ex: Camphor is ketone found in various plant sources and used in medicinal and flavoring applications .
oxidation-reduction
[Podstatné jméno]

a chemical reaction where electrons are transferred between substances

oxidačně-redukční reakce, reakce oxidace-redukce

oxidačně-redukční reakce, reakce oxidace-redukce

Ex: Photosynthesis is a biological process that involves oxidation-reduction of water and carbon dioxide to produce glucose and oxygen .
molarity
[Podstatné jméno]

the concentration of a solute in a solution, measured in moles per liter (mol/L or M)

molarita, koncentrace v molech na litr

molarita, koncentrace v molech na litr

Ex: Hydrogen peroxide with molarity of 6 M means there are 6 moles of H₂O₂ per liter .
electrolyte
[Podstatné jméno]

a substance that, when dissolved in a solution, produces ions and enables the conduction of electric current

elektrolyt, elektrolytová látka

elektrolyt, elektrolytová látka

Ex: Acetic acid (CH₃COOH) is a weak electrolyte, producing acetate ions (CH₃COO⁻) and hydrogen ions (H⁺) in solution.
enthalpy
[Podstatné jméno]

a thermodynamic quantity representing the total heat content of a system, commonly denoted as H

enthalpie, termodynamická veličina

enthalpie, termodynamická veličina

Ex: Enthalpy plays a role in the analysis of reaction spontaneity , where negative ΔH values often indicate spontaneous processes .
entropy
[Podstatné jméno]

a thermodynamic measure of the degree of disorder or randomness in a system, denoted by S

entropie, změna entropie

entropie, změna entropie

Ex: Dissolving a solute in a solvent generally increases entropy of the system .
colloid
[Podstatné jméno]

a mixture where small particles of one substance are evenly dispersed in another substance, typically intermediate in size between solution and suspension particles

kolloid, kolloidní směs

kolloid, kolloidní směs

Ex: Blood plasma is colloid with proteins and other substances dispersed in water .
corrosion
[Podstatné jméno]

the gradual destruction of materials by chemical reaction, usually of metals

koroze, korozní proces

koroze, korozní proces

Ex: Exposure to moisture accelerates corrosion.
alkali
[Podstatné jméno]

any substance with a pH of more than seven that neutralizes acids creating salt and water

žaludek, alkalická látka

žaludek, alkalická látka

Ex: Alkalis are often used in the production of soaps, detergents, and other cleaning agents due to their ability to dissolve fats and oils.
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