Science and the Natural World

(science) the smallest part of a chemical element that is found in the nature

The atom is composed of a nucleus containing protons and neutrons, surrounded by electrons.

a living thing such as a plant, animal, etc., especially a very small one that lives on its own

The pond ecosystem is home to a variety of organisms, including fish, algae, and bacteria.

a substance or compound produced or used in a process involving chemistry

the state of a substance that is neither solid nor liquid

The gas in the balloon expanded as it was heated by the sun.

flowing freely and in the form or state of a liquid

The liquid gold flowed smoothly into the mold, forming a beautiful statue.

firm and stable in form, not like a gas or liquid

The ice had formed into a solid block after being left in the freezer overnight.

a substance from which things can be made

Steel is a strong and durable material commonly used in the manufacturing of buildings, vehicles, and machinery.

a particular kind of matter in gas, solid, or liquid form

The chemist carefully poured the substance into the beaker, observing how it reacted with the other chemicals.

relating to, produced by, or using electricity

The electric lights in the room flickered as the storm outside intensified.

having actual existence and not imaginary

The real world is often different from dreams and fantasies.

done according to a planned and orderly system

The systematic approach to problem-solving involved following a clear step-by-step procedure.

a usually solid and hard substance that heat and electricity can move through, such as gold, iron, etc.

Iron is a commonly used metal in construction and manufacturing.

a light substance produced in a chemical process that can be formed into different shapes when heated

Many household items, such as containers and toys, are made from plastic.

a metallic chemical element with a silvery-gray appearance, widely used for making tools, steel, buildings, and various industrial products

Iron is commonly used in construction to make buildings and bridges.

a valuable yellow-colored metal that is used for making jewelry

She wore a necklace adorned with a pendant made of gold.

a shiny grayish-white metal of high value that heat and electricity can move through it and is used in jewelry making, electronics, etc.

She wore a necklace adorned with a pendant made of silver.

a nonmetal element that can be found in all organic compounds and living things

Graphite, used in pencils, is another allotrope of carbon.

a chemical element in gas form with no color that living things need for breathing

Trees release oxygen into the atmosphere as a byproduct of photosynthesis.

a hard material, usually made of minerals, and often used for building things

The old castle was built entirely of stone, giving it a sturdy and imposing appearance.

a careful and systematic study of a subject to discover new facts or information about it

Mark spent hours in the library doing research for his history paper.

a specific way or process of doing something, particularly an established or systematic one

The scientific method involves systematic observation, measurement, and experimentation.

a sample, showing what the rest of the data is typically like

This participant serves as an example of the elderly demographic.

to make or design something that did not exist before

Thomas Edison invented the electric light bulb, revolutionizing illumination.

someone who makes or designs something that did not exist before

Thomas Edison is renowned as an inventor for creating the electric light bulb.

to be the first person who finds something or someplace that others did not know about

By the time we got there, they had already discovered the ancient ruins.

the act of finding something for the first time and before others

The discovery of penicillin revolutionized medicine by introducing the first antibiotic.

something such as a hammer, saw, etc. that is held in the hand and used for a specific job

The carpenter used a hammer as his primary tool for driving nails.

something that is known to be true or real, especially when it can be proved

It is a fact that the Earth revolves around the sun.

a rational motive or cause for a belief, decision, or action

the application of scientific knowledge for practical purposes, especially in industry

The technology used in modern smartphones has advanced rapidly.

a single piece of information or a reference point used in analysis or measurement

In statistical analysis, each individual response serves as a datum for further examination.

the act of directing your attention and energy toward a particular thing or task

She needed to maintain her focus during the exam to ensure she answered all the questions accurately.

the part of a vehicle that uses a particular fuel to make the vehicle move

The mechanic repaired the engine of the car, which had been making strange noises.

anything that we can hear

The sound of birds chirping greeted us as we entered the park.

a place where people do scientific experiments, manufacture drugs, etc.

The chemistry students conducted experiments in the laboratory to study chemical reactions.

something that is caused by something else

The medication had the desired result of reducing the patient's symptoms.