what an element
78bd38512463ae997f442dd863ffe648
Definition of Element An element is a substance consisting of atoms which all have the same number of protons-i.e. the same atomic number. Elements are chemically the simplest substances and hence cannot be broken down using chemical methods. Elements can only be changed into other elements using nuclear methods. Although an element's atoms must all have the same number of protons, they can have different numbers of neutrons and hence different masses.
b76606e7a84301e91039cdb69ec6c1e9
Definition of Element Definition of Element. 1) A substance that cannot be decomposed into simpler substances by chemical means. 2) One of the 116 presently known substances that cannot be decomposed by chemical reaction into a simpler substance. Elements comprise all matter at and above the atomic level.
f740c17663d300262939b48e3d46288f
Atom An atom is the basic unit that makes up all matter. There are many different types of atoms, each with its own name, mass and size. These different atoms are called chemical elements. The chemical elements are organized on the periodic table. Examples of elements are hydrogen and gold. Atoms are very small, but the exact size changes depending on the element. Atoms range from 0.1 to 0.5 nanometers in width. One nanometer is about 100,000 times smaller than the width of a human hair. This makes a
b8eed162a51810ce527d6b8ed8a365ab
- A chemical element or element is a chemical substance consisting of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number, Z).he standard state, also known as reference state, of an element is defined as its thermodynamically most stable state at 1 bar at a given temperature (typically at 298.15 K). In thermochemistry, an element is defined to have an enthalpy of formation of zero in its standard state.
6ec891f4582e0cc96699f6741a63419c
atom atom - (physics and chemistry) the smallest component of an element having the chemical properties of the element. substance - the real physical matter of which a person or thing consists; DNA is the substance of our genes.
c0b1c796b8584b7b8474959bfb2f2b04
Elements and Compounds Elements and Compounds. 1  Element-An element is a substance composed of the same type of atoms (e.g. gold Au, oxygen O 2). 2  Compound-A compound is a substance made of more than one type of atom (e.g. water H 2 O, carbon dioxide CO 2). 3  Molecule-A molecule is the smallest particle of either an element or a compound.
829bd215347eb243209011aafb102ac0
Definition of Element 3) A substance that cannot be decomposed; each chemical element is characterized by the number of protons in the nucleus. See the periodic table and the introduction for elements.
ecf7b70b2503a1b50e1092f77bd92e80
-   Metals are a class of elements. A pure metal is an element. Some metals are alloys, which mean they have more than one metal or element in them.
d14fa9f5e6ee691df5c5ccc023ef444c
element A substance that cannot be reduced to simpler substances by normal chemical means and that is composed of atoms having an identical number of protons in each nucleus. A fundamental, essential, or irreducible constituent of a composite entity.
e75d558122b0ef4176b904afff0218c1
What is the scientific definition of an element? A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. 3 people found this useful.
1b39cccffb0118a9e336d034e59af6c6
Chemical element A chemical element or element is a species of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number, or Z). There are 118 elements that have been identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements.
ed536c36febcea71b260813f8a3f53e4
element (ěl'ə-mənt) A substance that cannot be broken down into simpler substances by chemical means. An element is composed of atoms that have the same atomic number, that is, each atom has the same number of protons in its nucleus as all other atoms of that element. Today 115 elements are known, of which 92 are known to occur in nature, while the remainder have only been made with particle accelerators.
630e269ced704b5bf80f6c9143c40fca
Chemical element A chemical element is a species of atoms having the same number of protons in their atomic nuclei. 118 elements are identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements. There are 80 elements that have at least one stable isotope and 38 that have exclusively radionuclides, which decay over time into other elements. Iron is the most abundant element making up Earth, while oxygen is the most common element in the Earth's crust. Chemical elements
17b71b33023bf13dacb1e316f0fa039b
Contents: Compound vs Element Diffen › Science › Chemistry. Elements and compounds are pure chemical substances found in nature. The difference between an element and a compound is that an element is a substance made of same type of atoms, whereas a compound is made of different elements in definite proportions. Examples of elements include iron, copper, hydrogen and oxygen.
644f5f0e73e66e1fd8f3cfee8fa7ee7c
- Carbon is an element. The copper in a penny is an. example of another element. In a pure copper sample, all the atoms have. the same identity. Altogether, there are 111 recognized elements. An atom. is the base unit, or simplest form of an element. ! 146! Compounds Materials called compounds are made. from atoms of two or more elements that are combined chemically. The. ratio of the different atoms in a compound is always the same. For. example, the elements hydrogen and oxygen can combine to form the. compound water.
053536700d2e6f0f083691b0dffbf28c
Element noun, plural: elements. (physics, chemistry) A substance that cannot be decomposed into simpler substances by chemical means, and is made up of atoms all with identical number of protons. (general). (1) A fundamental component of a composite entity (such as a vessel element that makes up the vessels in angiosperms).physics, chemistry) A substance that cannot be decomposed into simpler substances by chemical means, and is made up of atoms all with identical number of protons. (general). (1) A fundamental component of a composite entity (such as a vessel element that makes up the vessels in angiosperms).
f08011df4b2a3273c79c013b30a77c87
Periodic Table and the Elements Everything is made of atoms. The term 'element' is used to describe atoms with specific characteristics. There are almost 120 known elements. For example, you are made up of billions of billions of atoms but you probably won't find more than 40 elements (types of atoms) in your body.
39f82128d328c583eb92effa5518e064
Definition of Element An element is a substance consisting of atoms which all have the same number of protons-i.e. the same atomic number. Elements are chemically the simplest substances and hence cannot be broken down using chemical methods. Elements can only be changed into other elements using nuclear methods.Although an element's atoms must all have the same number of protons, they can have different numbers of neutrons and hence different masses.lements are chemically the simplest substances and hence cannot be broken down using chemical methods. Elements can only be changed into other elements using nuclear methods. Although an element's atoms must all have the same number of protons, they can have different numbers of neutrons and hence different masses.
7cb22cf4ad2a0df6377368efced7b40d
- The definition of an element is one of the substances that constitute all physical matter-wind, air, fire or water, or a natural environment. 1  An example of an element is the fire that cooks the food on a gas range stove.
93c34e54242c41bc6a13a853043e2a6c
Muscles of respiration Along with the diaphragm, the intercostal muscles are one of the most important groups of respiratory muscles. These muscles are attached between the ribs and are important in manipulating the width of the rib cage.There are three layers of intercostal muscles.n human physiology, the muscles of respiration are those muscles that contribute to inhalation and exhalation, by aiding in the expansion and contraction of the thoracic cavity.
8c49c9f9a1baf11f9b6ac42c024e219f
- Fire is an element. Fire is an element. The definition of an element is one of the substances that constitute all physical matter-wind, air, fire or water, or a natural environment.
a93487dafd6d3b96896f1425ff204d58
element Fire is an element. Fire is an element. The definition of an element is one of the substances that constitute all physical matter-wind, air, fire or water, or a natural environment.1  An example of an element is the fire that cooks the food on a gas range stove. 2  An example of an element is a neighborhood; living in your element.he definition of an element is one of the substances that constitute all physical matter-wind, air, fire or water, or a natural environment. 1  An example of an element is the fire that cooks the food on a gas range stove.
9564d3effe5947f690569e3251e4ef14
Elements An element is a pure substance that is made from a single type of atom. Elements are the building blocks for all the rest of the matter in the world.
296eebbbf6b20541ff9a40d310262036
Chemical element A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z). 118 elements are identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements.
2c3f9193589dce11dd4ffb1c6d7e222a
- Science >> Chemistry for Kids. An element is a pure substance that is made from a single type of atom. Elements are the building blocks for all the rest of the matter in the world. Examples of elements include iron, oxygen, hydrogen, gold, and helium. Atomic Number.
d626097a4037ebce5c454df3e0b24dba
Chemical element The term element is used for atoms with a given number of protons (regardless of whether or not they are ionized or chemically bonded, e.g. hydrogen in water) as well as for a pure chemical substance consisting of a single element (e.g. hydrogen gas).