Physics and Chemistry

to clean a surface by using a machine that sucks up dirt, dust, etc.

She vacuums the carpets in the living room every week to keep them clean.

a link that holds atoms or ions together in any molecule or crystal

The covalent bond between the hydrogen and oxygen atoms forms a water molecule.

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

The composition of water molecules consists of two hydrogen atoms and one oxygen atom, chemically bonded together.

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

The chemist is currently distilling the solution to isolate the pure compound.

to reduce the volume or size of something by applying pressure, squeezing, or condensing it

The athlete wore compression socks to help compress the muscles and improve circulation.

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

Dark matter is a form of matter that does not emit, absorb, or reflect light, making it invisible and detectable only through its gravitational effects.

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

Antimatter is composed of antiparticles, which have the same mass as their corresponding particles but opposite electric charge.

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

Enzymes are naturally occurring biological catalysts that allow complex metabolic reactions to proceed efficiently in living cells.

to make a vehicle, machine or object move more quickly

The pilot smoothly pushed the throttle forward to accelerate the airplane for takeoff.

any water-soluble compound that can turn litmus blue and reacts with an acid to form a salt and water

Sodium hydroxide is a strong alkali commonly used in soap making.

a liquid that is capable of dissolving another substance

Ethanol is commonly used as a solvent to dissolve oils and perfume essences for the production of aftershaves and colognes.

a sharp-smelling gas made of nitrogen and hydrogen

Ammonia has a strong, sharp odor that can irritate the eyes and throat.

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

the sum of money that needs to be payed for a thing or service

The hotel room charge included breakfast and Wi-Fi access.

someone who guides and directs an orchestra

The conductor raised their baton, signaling the orchestra to begin the symphony.

a solid substance formed when a chemical compound solidifies, with atoms arranged in a highly regular, repeating pattern

Salt forms a cubic crystal when it solidifies.

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

Sodium ions (Na⁺) and chloride ions (Cl⁻) combine to form table salt.

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

Light is an electromagnetic wave that can travel through a vacuum.

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

Nuclear fission is a process in which the nucleus of an atom splits into two or more smaller nuclei, releasing a large amount of energy.

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

Nuclear fusion is the process in which two atomic nuclei combine to form a heavier nucleus, releasing a large amount of energy in the process.

to become gas or vapor from liquid

Water can evaporate when exposed to heat.

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

The new set of aluminum cookware is both lightweight and highly resistant to corrosion, making it perfect for the kitchen.

to combine two or more metals to make a more suitable one

The metallurgist alloyed copper and zinc to produce brass, a durable and corrosion-resistant material.

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

Copper is valued for its high electrical conductivity, which makes it ideal for wiring in electrical systems.

produced by or relating to magnetism

The magnetic field around the magnet attracts nearby metal objects.

absence of agreement or friendliness between people with different opinions

There was noticeable friction between the team members after the disagreement over the project's direction.

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

The pipes in the old house were heavily damaged by corrosion, resulting in leaks throughout the plumbing system.

the general population

Propaganda was used to influence the masses.

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

The density of water is approximately 1 gram per cubic centimeter (g/cm³).

the speed at which something moves in a specific direction

The velocity of an object is the rate of change of its position with respect to time.

to guide or show the direction for others to follow

The tour guide led us through the museum.

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

the 1st and smallest planet in the solar system which is the closest to the sun

Mercury, the closest planet to the Sun, has surface temperatures that can reach up to 800 degrees Fahrenheit during the day.

a hard, silvery, malleable, and corrosion-resistant metallic element used in alloys and plating

The coin is made primarily of nickel and copper.

(biology) the colorless liquid part of the blood in which the blood cells are suspended

a heavy radioactive metallic element used in producing nuclear energy

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

Radioactive isotopes are used in medical imaging for diagnostic purposes.

(of clothes) designed with special material that keeps the wearer warm

She wore a thermal jacket and pants to stay warm during the winter hike.

remaining still, with no change in position

The static position of the statue gave it a sense of permanence in the park.

produced artificially, typically based on its natural version

Synthetic fabrics like polyester are created through chemical processes rather than being directly sourced from plants or animals.