Ch 2 Biochemistry Ap
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This document provides a summary of basic chemistry concepts including: 1. Matter is anything that occupies space and has mass, and can undergo physical or chemical changes. The four main elements that make up the human body are carbon, oxygen, hydrogen, and nitrogen. 2. Atoms are the building blocks of elements and contain protons, neutrons, and electrons. The number of protons determines the element. Isotopes of elements vary in neutron number. 3. Molecules are formed by chemical bonds between two or more like atoms, while compounds contain two or more different atoms bonded together. Electron configuration and bonding allow for chemical reactions.
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Types of bond by KK Sahu sir
Definition
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Types of bond
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This document discusses the three main types of chemical bonds: ionic, covalent, and metallic. Ionic bonds form between metals and nonmetals when the metal transfers electrons to the nonmetal. Covalent bonds form when atoms share electrons in either single, double or triple bonds. Metallic bonds form when metal atoms contribute electrons to form a "sea of electrons" that are shared between all the atoms.
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Definition
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Types of bond
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Covalent bond
Glycosidic bond
Peptide bond
Disulfide bond
2. Weak bond
Hydrogen bond
Van der waals bond
Hydrophobic bond
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