자연 과학 SAT - 화학

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

중합체

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, leading to variation in atomic mass

동위 원소

having a tendency to to undergo chemical reactions

반응성

containing or relating to a dangerous form of energy produced by nuclear reactions

방사성의

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

공유결합

a type of chemical bond between two atoms involving the sharing of two pairs of electrons, resulting in a stronger and more stable connection than a single bond

이중결합

defining substances or surfaces that have a strong attraction to water molecules, allowing them to easily absorb or interact with water

친수성의

characterized by substances or surfaces that repel water molecules, showing little or no affinity for water

소수성의

a chemical reaction that releases heat energy to its surroundings, typically resulting in a temperature increase

발열 반응

a chemical process that absorbs heat energy from its surroundings, often resulting in a temperature decrease

흡열 반응

the weighted average mass of an atom of an element, taking into account the masses of all its naturally occurring isotopes

원자 질량

the total mass of all the atoms in a single molecule of a substance

분자 질량

the total number of protons and neutrons in the nucleus of an atom

질량수

a fundamental unit in chemistry that represents the amount of substance containing as many entities (atoms, molecules) as there are in 12 grams of carbon-12

몰

a container usually made of glass or plastic used in chemistry and laboratory

굽 달린 큰 컵

a laboratory tool used to measure and transfer small volumes of liquid

피펫

a device that spins samples to separate components based on density

원심분리기

a special paper treated with chemicals that change color in response to certain conditions, used to test for the presence of specific substances or measure pH levels

표시 용지

a tabular arrangement of chemical elements organized based on their atomic number, electron configuration, and recurring chemical properties

주기율표

the process where calcium or calcium salts accumulate in a tissue, making it hard and rigid

석회화

a laboratory method used to determine the concentration of a substance in a solution by gradually adding a reagent of known concentration until a reaction is completed

적정

the process by which microorganisms convert carbohydrates into alcohol, acids, or gases

발효

the measure of how much of a substance is present in a certain volume of solution

집중

a device used to analyze the chemical composition of small samples at a microscopic scale

마이크로프로브

a type of metallic material composed of three or more elements mixed together in varying proportions

다성분 합금

a group of atoms bonded together that behaves as a single unit within a molecule

a test that measures the presence, amount, or activity of a specific substance in a sample, often used in scientific and medical research

시험

a state in a chemical reaction where the forward and reverse reactions occur at the same rate, resulting in no net change in the concentrations of reactants and products

평형

(chemistry) the process of separating a liquid or solution into its parts by passing electricity through it

전기분해

(of a solid) to become one with a liquid

(물 등에) 용해시키다

to make a solution or mixture weaker or less concentrated by adding more liquid

묽게 하다

to disperse fine particles throughout a fluid so they remain evenly distributed without settling

매달다

the process of dispersing or dissolving a substance into a solvent to form a homogeneous solution

가용화

the arrangement, composition, and characteristics of a material at a microscopic level

미세구조

a tiny, tube-shaped structure made of carbon atoms, with remarkable strength and electrical properties

나노튜브

heated to a liquid state due to high temperatures

녹은

a phase is a distinct form of matter with uniform chemical and physical properties, separated from other forms by boundaries

단계

to eliminate or neutralize harmful substances

...에서 독을 제거하다

denoting substances with a highly organized molecular structure, akin to crystals

수정 같은

a scientist who studies the structure and properties of crystals

결정학자

a scientist who studies the chemical composition and processes of celestial bodies to understand the formation and evolution of the universe

우주화학자

a laboratory technique used to separate and analyze mixtures of substances based on their differential affinities for a stationary phase and a mobile phase

색층 분석기

a type of radioactive decay where a nucleus emits a beta particle (electron or positron) to transform a neutron into a proton or vice versa

베타붕괴

not having an electrical charge

충전되지 않은

a device that turns vapor into liquid by cooling it

콘덴서

weak attractive forces between molecules or atoms, arising from temporary or induced dipoles

반 데르 발스의 힘

a scientist or engineer who specializes in the study and production of metals and alloys, including their properties, processing methods, and applications

야금가

the process by which molecules of a substance adhere to the surface of a solid or liquid, forming a thin film or layer

흡착

a renewable, alternative fuel made from organic materials such as vegetable oils, animal fats, or recycled cooking grease

바이오디젤

a specific composition of a mixture of substances, typically metals or alloys, where the melting point is at its lowest possible temperature under atmospheric pressure

공정

a substance capable of absorbing and retaining a large amount of liquid relative to its own mass

초흡수성