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- Atom - Wikipedia
Atoms are the basic particles of the chemical elements An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons The chemical elements are distinguished from each other by the number of protons that are in their atoms
- Atom | Definition, Structure, History, Examples, Diagram . . .
An atom is the basic building block of chemistry It is the smallest unit into which matter can be divided without the release of electrically charged particles It also is the smallest unit of matter that has the characteristic properties of a chemical element Are all atoms the same size?
- Atom: Definition, Structure Parts with Labeled Diagram
Atoms are tiny particles that form the basic building blocks of all matter in the universe, whether solid, liquid, or gas All living organisms and nonliving objects found on Earth are made of trillions and trillions of atoms The smaller particles that make up an atom are known as subatomic particles
- What Is an Atom? Atom Definition - Science Notes and Projects
An atom is the basic building block of matter, consisting of protons, neutrons, and electrons An atom is the smallest unit of matter that forms a chemical element and cannot be divided using any chemical means Every solid, liquid, gas, and plasma consists of neutral or ionized atoms
- What is an atom? Facts about the building blocks of matter . . .
Atoms are the basic units of matter Everything in the universe apart from energy is made of matter therefore atoms make up everything in the universe, according to Northwestern University
- Atoms - What are they? Whats inside them? - Explain that Stuff
Most atoms have three different subatomic particles inside them: protons, neutrons, and electrons
- What is an atom - NRC
Anything that has a mass—in other words, anything that occupies space—is composed of atoms While its name originally referred to a particle that couldn't be divided any more—the smallest thing possible—we now know that each atom is generally made up of smaller particles
- The Structure of the Atom – Introductory Chemistry
An atom is the smallest unit of matter that retains all of the chemical properties of an element Atoms combine to form molecules, which then interact to form solids, gases, or liquids For example, water is composed of hydrogen and oxygen atoms that have combined to form water molecules
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