ACT বিজ্ঞান - Chemistry

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

পলিমার

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

আইসোটোপ

having a tendency to to undergo chemical reactions

প্রতিক্রিয়াশীল

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

অবসীজনক

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

কোভালেন্ট বন্ধন

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

ডাবল বন্ড

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

জলবাহী

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

হাইড্রোফোবিক

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

এক্সোথার্মিক প্রতিক্রিয়া

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

অন্তঃশোষক প্রতিক্রিয়া

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

পারমাণবিক ভর

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

অণুর ভর

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

মাস সংখ্যা

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

মোল

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

বিকার

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

পাইপেট

a device that spins samples to separate components based on density

সেন্ট্রিফিউজ

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

ইন্ডিকেটর পেপার

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

পিরিয়ডিক টেবিল

(of a solid) to become one with a liquid

গলিৎ

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

সোলুবিলাইজেশন

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

মাইক্রোস্ট্রাকচার

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

তরল

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

ঘনত্ব

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

মাইক্রোপ্রোব

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

সুপারঅবসর্বেন্ট

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

মাল্টিকম্পোনেন্ট অ্যালয়

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

ন্যানোটিউব

heated to a liquid state due to high temperatures

গলিত

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

রাডিকেল

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

পর্যায়

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

ক্যালসিফিকেশন

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

ফারমেন্টেশন

to eliminate or neutralize harmful substances

ডিটক্সিফাই করা

to analyze or test a substance, typically in a laboratory setting, to determine its components or qualities

বিশ্লেষণ করা

a scientist who studies the structure and properties of crystals

কৃত্রিম পদার্থবিদ

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

কসমোকেমিস্ট

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

ক্রোমাটোগ্রাফি

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

বিটা বিচ্ছুরণ

not having an electrical charge

বহিস্কৃত

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

টাইট্রেশন

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

গতি গতি সমতা

a device that turns vapor into liquid by cooling it

শীতলক

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

ভ্যান ডার ওয়ালস শক্তি

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

ধাতুবিদ

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

অ্যাডসোর্চন

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

বায়োডিজেল

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

ইলেকট্রোলাইসিস

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

স্থগিত করা

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

ইউটেকটিক

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

দ্রবীভূত করা