what is an element chemistry
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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.Examples of elements include iron, oxygen, hydrogen, gold, and helium.Atomic Number. An important number in an element is the atomic number.n 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.
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- Quick Answer. A material that contains only one type of atom is called an element. There are 98 elements known to occur naturally, along with another 20 that have been synthesized in laboratories, as of 2015. Hydrogen, the lightest element, is also the most abundant chemical substance in the universe.
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- 1 S.v.  2 SDN BHD.. 3  Retrieved October 15 2015 from http://www.acronymfinder.com/Sendirian-Berhad-(Malay-equivalent-to-incorporated)-(SDN-BHD).html. 4  APA style: SDN BHD. (n.d.) Acronym Finder.
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- Population density. The map shows patterns of population density on a global scale. the majority of places with high population densities are found in the northern hemisphere [northern hemisphere: The half of earth which is north of the equator. The population density of a country is has very little to do with its level of economic development.
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- element. 1  a component or constituent of a whole or one of the parts into which a whole may be resolved by analysis: Bricks and mortar are elements of every masonry wall. 2  Chemistry. one of a class of substances that cannot be separated into simpler substances by chemical means.
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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.
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- An element is something basic and important––in chemistry, an element is one of the essential molecules that everything else is made of. If a book's ending carries and element of surprise, it means surprise is an important part of the story's end. One of the earliest meanings of this noun was in reference to any of four substances, earth, air, fire, or water, that were formerly regarded as a basic constituent of the universe.
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Chemical element A chemical element is a substance that contains only one type of atom. If a substance contains more than one type of atom, it is a compound. An element can be a solid, liquid or gas. The smallest particle of such an element is an atom. Atoms are made up of protons, neutrons, and electrons.
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Definition of Element Elements with even numbers of protons and an even number of neutrons make up about 90% of the earth's crust. 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.
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Chemical element The atomic number of an element is equal to the number of protons in each atom, and defines the element. For example, all carbon atoms contain 6 protons in their atomic nucleus; so the atomic number of carbon is 6.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.
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element An element is uniquely determined by the number of proton s in the nuclei of its atom s. The number of protons in the nucleus of the atom of an element is known as the atomic number of that element. The number of electron s in the atom of a specific element can vary. If the number of electrons is the same as the number of protons, then the atom has no electric charge. However, if the number of electrons is different from the number of protons, the atom is called an ion. If there are more electrons than protons, it is a negative ion; if there are fewer electrons than protons, it is a positive ion. The number of neutron s in the atom of a specific element can also vary.
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Chemical substance An element is a chemical substance made up of a particular kind of atom and hence cannot be broken down or transformed by a chemical reaction into a different element, though it can be transmuted into another element through a nuclear reaction.
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Questions and Answers A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. An element is a substance that is made entirely from one type of atom.
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- 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 worldexamples of elements include iron oxygen hydrogen gold and heliumatomic number an important number in an element is the atomic numbercience 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
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Chemical element In chemistry, a pure element means a substance whose atoms all (or in practice almost all) have the same atomic number, or number of protons. Nuclear scientists, however, define a pure element as one that consists of only one stable isotope.n chemistry, a pure element means a substance whose atoms all (or in practice almost all) have the same atomic number, or number of protons. Nuclear scientists, however, define a pure element as one that consists of only one stable isotope.
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element 1) In chemistry and physics, an element is a substance that cannot be broken down into simpler components by any non-nuclear chemical reaction. An element is uniquely determined by the number of protons in the nuclei of its atoms. The number of protons in the nucleus of the atom of an element is known as the atomic number of that element. The number of electrons in the atom of a specific element can vary. If the number of electrons is the same as the number of protons, then the atom has no electric charge.
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Contents: Compound vs Element 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. Examples of compounds include water (H2O) and salt (Sodium Chloride - NaCl)
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element A substance composed of atoms of only one kind, i.e., of identical atomic (proton) number, which therefore cannot be decomposed into two or more elements, and which can lose its chemical properties only by union with some other element or by a nuclear reaction changing the proton number.
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- For a more advanced list of resources on atoms, elements and compounds. Elements are substances that cannot be separated into simpler substances. Salt is made up of the elements sodium and chloride. Water is made up of the elements hydrogen and oxygen. The smallest particles of matter are called atoms.
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- local airports in tasmania major airports in tasmania are shown at the top of the page there are 2 airports in tasmania here is a list of some of the smaller airportsravelmath helps you find airports in any state or country you can use it to look for major international airports if you live in a metropolis area or you can search for local airports near your town or suburb you ll get a map of the major airports
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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.
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- Answer: A chemical element, or an element, is a material which cannot be broken down or changed into another substance using chemical means. Elements may be thought of as the basic chemical building blocks of matter. Depending on how much evidence you require to prove a new element has been created, there are 117 or 118 known elements.
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- 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 atomic number of an element is equal to the number of protons in each atom, and defines the element. For example, all carbon atoms contain 6 protons in their atomic nucleus; so the atomic number of carbon is 6.
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Review of Elements, Compounds, and Mixtures Elements. Any substance that contains only one kind of an atom is known as an element. Because atoms cannot be created or destroyed in a chemical reaction, elements such as phosphorus (P 4) or sulfur (S 8) cannot be broken down into simpler substances by these reactions. Example: Water decomposes into a mixture of hydrogen and oxygen when an electric current is passed through the liquid.
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Element, mixture or compound? Rust-compound Air-mixture Helium-element soil-mixture Sea water-mixture salt-compound An element is made of a single pure substance, matter-Helium, hydrogen, etc. A compound is a pure substance made of elements chemically put together. Not easily separated.
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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.