how many different kinds of atoms (elements) are found in nature?
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Of these 118 elements, 94 occur naturally on Earth. Six of these occur in extreme trace quantities: technetium, atomic number 43; promethium, number 61; astatine, number 85; francium, number 87; neptunium, number 93; and plutonium, number 94.
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The atom is the smallest unit of an element. Molecules, mixtures, and compounds can be broken down into smaller constituents with relative ease. Which of the following is NOT a substance made of one type of molecule. A cell is a collection of many different types of molecules.
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The four basic elements of life are: Oxygen, hydrogen, nitrogen and phosphorus. These four elements are found in abundance in both the human body and in animals. There are other elements that compose the human body, but the four we've highlighted participate in all life processes.
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An element is a pure substance made entirely of one type of atom. Elements cannot be separated into simpler substance by physical or chemical means. Each element has a unique set of properties that can be used to identify that element.
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The most common and stable type of magnesium atom found in nature has 12 protons, 12 neutrons, and 12 electrons (which have a negative charge). Atoms of the same element with different neutron counts are known as isotopes.
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Only if the number of protons (and consequently the electrons) is different, the atoms are of two different elements. The number of neutrons in atoms of different elements can be the same and so can the number of neutrons in two atoms of the same element be different.
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An atom is the smallest unit of matter that retains all of the chemical properties of an element. ... Most atoms contain all three of these types of subatomic particles—protons, electrons, and neutrons.
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This simple model could explain the millions of different materials around us. There are more than 109 different types of atom - one for each element. Differences between the atoms give the elements their different chemical properties.
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Iron is an element, as it is only one type of atom (Fe), which can be found along with all other elements in the Periodic Table of Elements . Compounds and mixtures both contain 2 or more elements within them, either bonded chemically (compound) or physically (mixture).
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The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. ... Because different isotopes have different numbers of neutrons, they do not all weigh the same or have the same mass.
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The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. ... Different isotopes of the same element have the same atomic number.
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An element (also called a "chemical element") is a substance made up entirely of atoms having the same atomic number; that is, all of the atoms have the same number of protons. Hydrogen, helium, oxygen, nitrogen, carbon, gold, silver, lead, and uranium are well-known examples of elements.
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There are three isotopes of carbon found in nature – carbon-12, carbon-13, and carbon-14. All three have six protons, but their neutron numbers - 6, 7, and 8, respectively - all differ.
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Kinds of molecules. There are three types of molecules which are the element molecule, the compound molecule & the mixture.
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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.
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Elements 1 through 92 (except for elements 43 and 61) occur naturally on Earth, although some are only present in extremely small quantities. The elements following uranium on the periodic table are only produced artificially, and are known as the transuranium or transuranic elements.
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There are two types of pure substances: elements and compounds. Elements: are pure substances made up of only l type of atom. Atoms of the same element are identical in properties.