molecule definition gcse
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Molecule A molecule is a particle containing two or more atoms. If it contains only one type of atom it is called an element.
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Molecule Atoms and complexes connected by non-covalent bonds such as hydrogen bonds or ionic bonds are generally not considered single molecules. Molecules as components of matter are common in organic substances (and therefore biochemistry). They also make up most of the oceans and atmosphere.
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molecule mol•e•cule. 1. the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound. 2. a quantity of a substance, the weight of which is numerically equal to the molecular weight; gram molecule.3. any very small particle.olecule. n. 1. (Chemistry) the simplest unit of a chemical compound that can exist, consisting of two or more atoms held together by chemical bonds. 2. a very small particle.
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General Chemistry/Atoms and Molecules In size the entire atom has been thought to be approximately four-billionths of an inch, meaning that approximately 250,000,000 atoms of this size must be put into line to span 1 inch. Atoms are not usually alone, but instead come in groups called molecules. Molecules A molecule is a single unit created by two or more atoms that are tightly bonded together. Diatomic molecules are molecules which are made of two atoms. Certain elements are diatomic elements because they do not naturally occur as single atoms, but as a pair of atoms. The diatomic molecules are (H 2) Hydrogen, (N 2) Nitrogen, (O 2) Oxygen, (F 2) Fluorine, (Cl 2) Chlorine, (I 2) Iodine and (Br 2) Bromine.
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Definition of Diatomic Diatomic molecules are molecules made of two atoms chemically bonded together. The atoms can be of the same element (homonuclear molecules), or of different elements (heteronuclear molecules). Familiar examples of diatomic molecules of elements are the five gaseous state diatomic elements: Cl 2, F 2 H 2, N 2 ,and O 2.onding in Diatomic Molecules. In homonuclear diatomic molecules, the bonding is covalent. Each atom in the molecule has equal electronegativity; electrons are shared equally between the two atoms. In heteronuclear diatomic molecules, the atoms differ in electronegativity; these molecules have polar covalent bonds.
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Polar Molecule Definition and Examples Polar Molecule Definition: A polar molecule is a molecule containing polar bonds where the sum of all the bond's dipole moments is not zero. Examples: Water is a polar molecule. Carbon dioxide is made up of polar bonds, but the dipole moments cancel each other out and therefore is not a polar molecule. Up Next. Up Next.
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Polar Molecule: Definition & Examples Definition. Molecules consist of atoms that are made up of electrons, protons, and neutrons. The electrons are usually distributed equally throughout the molecule's outer shell-called the orbit. However, when the electrons do not have an equal distribution of electrons in the orbit you have a polar molecule.
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Talk:Molecule As for the diamond molecule: the term molecule refers to a well-defined particle of a chemically pure substance. Atomically pure diamond yields no well-defined molecular particle anyone could point to.
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molecule n (physics and chemistry) the simplest structural unit of an element or compound. a molecule that is a permanent dipole. any large molecule containing chains of amino acids linked by peptide bonds. a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes.
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- A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together. Note that the two nitrogen atoms which comprise a nitrogen molecule move as a unit. Compounds. Microscopic view of the molecules of the compound water (gas phase).
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molecule Molecule. the smallest particle of a substance that can exhibit all the chemical properties of the substance. A molecule is composed of atoms (more precisely, of atomic nuclei, their surrounding inner electrons, and their outer valence electrons, which form a chemical bond). The inner electrons of atoms usually do not participate in the formation of such bonds. The molecular composition and structure of a given substance do not depend on the method of preparation used. In the case of monatomic molecules (for example, inert gases), the concepts of the molecule and the atom are congruent.
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molecule A molecule is composed of two or more atoms that are covalently bonded. See also atom, compound. The smallest unit of a substance that can exist alone and retain its core chemical and physical characteristics.olecule, n a unit of matter that is the smallest particle of an element or chemical combination of atoms (as a compound) capable of retaining chemical identity with the substance in mass.
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Molecule A molecule may be homonuclear, that is, it consists of atoms of a single chemical element, as with oxygen (O 2); or it may be heteronuclear, a chemical compound composed of more than one element, as with water (H 2 O).toms and complexes connected by non-covalent bonds such as hydrogen bonds or ionic bonds are generally not considered single molecules. Molecules as components of matter are common in organic substances (and therefore biochemistry). They also make up most of the oceans and atmosphere.
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- A molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms. Look at the model of oxygen above. The two balls represents the two oxygen molecules. The oxygen molecules are bonded or stuck together. We will learn about bonds later.
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- A molecule is formed from two or more atoms of a single element. An example is h2o. two hydrogen atoms and one oxygen atom forming a molecule of water! This question is archived.
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Definition of Biological molecules Definition of Biological molecules. Description: Large, complex molecules, such as proteins, nucleic acids, lipids and carbohydrates, that are produced only by living organisms. Biological molecules are often referred to as macromolecules or biopolymers. Source: Specialized encyclopedia and dictionaries.
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Molecules Examples Molecules. A molecule is two or more atoms bonded together chemically. An atom is the most basic unit of matter. When atoms are chemically bonded together with covalent bonds, molecules are formed. Molecules can be very small like water molecules or extremely large like proteins such as hemoglobin. Upon examination of a chemical formula for a molecule we see the element symbols marked with a subscripted number. The number represents the amount of that atom present within the molecule. If we are looking at water which has a chemical formula of H 2 O, this refers to 2 atoms of hydrogen bonded to one atom of oxygen.
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What is Chemistry all about? Molecule refers to a kind of particle, and is therefore a microscopic concept. Even at the end of the 19th century, when compounds and their formulas had long been in use, some prominent chemists doubted that molecules (or atoms) were any more than a convenient model.
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Definition of Diatomic Diatomic molecules are molecules made of two atoms chemically bonded together. The atoms can be of the same element (homonuclear molecules), or of different elements (heteronuclear molecules). Familiar examples of diatomic molecules of elements are the five gaseous state diatomic elements: Cl 2, F 2 H 2, N 2 ,and O 2.he atoms can be of the same element (homonuclear molecules), or of different elements (heteronuclear molecules). Familiar examples of diatomic molecules of elements are the five gaseous state diatomic elements: Cl 2, F 2 H 2, N 2 ,and O 2.
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Talk:Molecule In the kinetic theory of gases, the term molecule is often used for any gaseous particle regardless of its composition. According to this definition, noble gas atoms are considered molecules despite being composed of a single non-bonded atom.
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Small molecule In molecular biology and pharmacology, a small molecule daltons) organic compound that may help regulate a biological process, with a size on the order of 6991100000000000000♠10−9 m. Most drugs are small molecules.
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- needs residents in luxurious condominium and townhouse communities which are primarily owner-occupied. It. operates two HUD Section 811 projects devoted to housing for adults with chronic mental illness, and a project. housing psychiatric rehab patients in conjunction with the mental health system.
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- A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together. Note that the two nitrogen atoms which comprise a nitrogen molecule move as a unit. Microscopic view of the molecules of the compound water (gas phase).
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Definition of Diatomic Diatomic molecules are molecules made of two atoms chemically bonded together. The atoms can be of the same element (homonuclear molecules), or of different elements (heteronuclear molecules). Familiar examples of diatomic molecules of elements are the five gaseous state diatomic elements: Cl 2, F 2 H 2, N 2 ,and O 2.n homonuclear diatomic molecules, the bonding is covalent. Each atom in the molecule has equal electronegativity; electrons are shared equally between the two atoms. In heteronuclear diatomic molecules, the atoms differ in electronegativity; these molecules have polar covalent bonds. The molecule forms a dipole.
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Difference Between Molecules and Compounds A molecule is the smallest part of a compound. One or more atoms that are chemically unite to form a molecule. Molecular hydrogen (H2), molecular oxygen (O2) and molecular nitrogen (N2) are not compounds because each is consist of a single type of element.
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- So, when. the leads are placed on the. open circuit that contains a. ghost voltage, the low input. impedance will cause the ghost. voltage to dissipate and the. meter will display “OL” with the. Ω symbol indicating the meter.