TOEFL के लिए उन्नत शब्दावली - भौतिकी और रसायन शास्त्र

a space that is utterly empty of all matter

अवकक्ष, पूर्ण अवकक्ष

(chemistry) to merge or be merged by a chemical bond

जुड़ना, संयोजित होना

the different elements that form something or the arrangement of these elements

संयोग, संरचना

to heat a liquid and turn it into gas then cool it and make it liquid again in order to purify it

वाष्पित करना, शुद्ध करना

to press two things together or be pressed together to become smaller

संकीर्ण करना, दबाना

(physics) an invisible substance that makes up most of the universe's mass, detectable only through its gravitational effects

अंधकार पदार्थ, डार्क मैटर

(physics) matter consisting of elementary particles that are the antiparticles of those of regular matter

एंटीमैटर

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

उपकारक, कातालिस्‍टर

to increase the velocity of something

तेज़ करना, विलम्ब कम करना

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

क्षारीय पदार्थ, आधार

a liquid that is capable of dissolving another substance

द्रावक

a gas with a strong smell that dissolves in water to give a strongly alkaline solution

अमोनिया

a hard black substance consisting of an amorphous form of carbon which is made by slowly burning wood and is used as fuel or for drawing

कोयला, पत्थर

having an electric charge

चार्ज़ किया हुआ, विद्युतिकृत

a substance that permits electricity to pass through or along it

संवाहक, सामग्री संवाहक

a substance of small size and equal sides, formed naturally when turns to solid

क्रिस्टल, क्रिस्टल्स

a particle with a net electric charge due to loss or gain of one or more electrons

आयन

referring to the combined interaction of electric and magnetic fields, often associated with waves or radiation

इलेक्ट्रोमैग्नेटिक

the process or action of splitting a nucleus into two or more parts resulting in the release of a significant amount of energy

नाभिकीय विखंडन, नाभिकीय फिशन

(physics) the reaction in which two nuclei join together and produce energy

नाभिकीय संलयन, न्यूक्लियर फ्यूजन

to become gas or vapor from liquid

भाप बनना, भाप देना

a light silver-gray metal used primarily for making cooking equipment and aircraft parts

एल्यूमीनियम, एल्यूमीनियम (हिंदी में)

a combination of two or more metals, creating a metal that is usually stronger or more resistant

धातु मिश्रण

a metallic chemical element that has a red-brown color, primarily used as a conductor in wiring

तांबा

(physics) possessing the attribute of attracting metal objects such as iron or steel

चुंबकीय

the resistance that two surfaces moving on each other encounter

घर्षण, रगड़

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

संक्षय, जर्जरता

(physics) the property of matter that gives it weight in a gravitational field and is a measure of its inertia

द्रव्यमान, भौतिक द्रव्यमान

(physics) the degree to which a substance is compacted, measured by dividing its mass by its volume

घनत्व

the speed at which something moves in a specific direction

गति, वेग

a heavy soft metal, used in making bullets, in plumbing and roofing, especially in the past

सीसा, भारी धातु

a soft, black, and highly conductive material made up of carbon atoms that is commonly used in pencils and as a lubricant

ग्रेफाइट, ग्रेफाइट (पेंसिल में)

a heavy silver-colored and poisonous metal that has a liquid state in the ordinary temperature

पारा

a chemical element and a silver-white metal used in making alloys

निकेल

a gas with nearly no electrical charge that exists in the sun and other stars

प्लाज्मा

a heavy radioactive metallic element used in producing nuclear energy

यूरानियम

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

विकिरणशील, विकिरणशील

related to heat or temperature, including how heat moves, how materials expand with temperature changes, and the energy stored in heat

तापीय, उष्मीय

remaining still, with no change in position

स्थिर, अचल

produced artificially, typically based on its natural version

संश्लिष्ट, कृत्रिम