It doesn't matter if the atoms are the same or are different from each other. Atoms are basic units that cannot be split into smaller units. ‘the book is almost an encyclopedia. 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. A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Une molécule est un ensemble d’atomes (au moins deux) identiques ou non, unis les uns aux autres par le biais de liaisons chimiques. What conclusions can you make about the relative sizes of glucose, sucrose, NaCl, Congo red, and water molecules? credit-by-exam regardless of age or education level. | {{course.flashcardSetCount}} Did you know… We have over 220 college When oxygen bonds to itself (e.g., O2, O3) or to another element (e.g., carbon dioxide or CO2), molecules are formed. A molecule is a group of two or more atoms that bond together. Atoms are the basic building blocks of matter. The central dogma of molecular biology describes the process in which DNA is transcribed into RNA, then translated into protein. Molecules form when two or more atoms form chemical bonds with each other. The number of atoms and types of atoms that bond together to form a molecule determine the size and shape of the molecule. Start studying Molecule definition. n. The branch of biology that deals with the structure, function, and manipulation of nucleic acids and proteins. Molecules don't just make up your body; they also make up the things around you. Each hydrogen atom has one electron in its outer shell, but there's room for two. A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. - Quiz & Worksheet for Kids, Over 83,000 lessons in all major subjects, {{courseNav.course.mDynamicIntFields.lessonCount}}, Microbiology Lesson for Kids: Definition & Facts, Michael Faraday Lesson for Kids: Biography & Facts, Michael Faraday Lesson for Kids: Experiments & Inventions, Ernest Rutherford Lesson for Kids: Facts & Atomic Theory, Dominant & Recessive Genes: Lesson for Kids, Nutrition Lesson for Kids: Definition & Facts, Decomposers Lesson for Kids: Definition & Examples, Coral Lesson for Kids: Definition & Facts, Organism Lesson for Kids: Definition & Classification, Biomass Lesson for Kids: Definition & Facts, Difference Between Viruses & Bacteria: Lesson for Kids, Homogeneous Mixture Definition: Lesson for Kids, Eukaryotic Cells Definition: Lesson for Kids, Prokaryotic Cells Definition: Lesson for Kids, Resistor Lesson for Kids: Definition & Facts, Exercise Lesson for Kids: Importance & Benefits, Fertilization Definition: Lesson for Kids, Mendel's Law of Segregation: Lesson for Kids, Genotype vs. Phenotype Lesson for Kids: Definitions & Examples, How does Bacteria Reproduce? DNA is a complex molecule that carries your genetic information. Molecule definition is - the smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms. molecular biologist n. For example, a molecule that has a mirror plane won't have a dipole moment because the individual dipole moments can't lie in more than one dimension (a point). (a) 13 (b) 18 (c) 19 (d) 20 (e) none of these, Working Scholars® Bringing Tuition-Free College to the Community. Would you like to know what a molecule is? __An aqueous solution of a neutral ionic compound. There are many ways to put atoms together. The opposite type of molecule is a polar molecule, which is hydrophilic, or water loving. molecular definition: 1. relating to molecules (= the simplest units of a chemical substance): 2. relating to molecules…. A molecule is a group of two or more atoms that bond together. 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