PPT-Amino acids: Chemical and Physical Properties

Debalina Mukhopadhyay Containing carbon hydrogen nitrogen oxygen Building blocks of protein Contain Amino group NH2 carboxyl group COO Alkyl group R H alpha carbon contains the functional groups. What are amino acids?. Amino acids are the building blocks of proteins.. In the body, they exist as zwitterions.. Zwitterions can behave as both an acid or a base.. Today we will:. Study . the acid-base properties of amino acids, . Matter. Every element/compound is unique in some way from all others.. If you know enough about a substance, you can figure out what it is.. If you know what a substance is, you can know all types of things about it.. 21. Physical Properties. Chemical Properties. Physical Change. Chemical Change. Chemical and Physical Changes Brain pop. Physical Properties. can be observed or measured without changing the substance.. Property. Is a description of an object. The tree is TALL. The tree is GREEN. If struck by lighting, the tree could catch FIRE (BURN). Physical Properties. Are determined by the use of the . . . . Science 9. Review: Physical Properties. Characteristics of substances that you can sense (touch, see, smell, etc.). These do not change the identity of the substance. Does NOT change . the identity. Chemical Properties. Chapter 2 Section 2. Describing matter. Matter: anything that has mass and takes up space. Mass – the amount of matter in something. Volume – the amount of space something occupies. Which of the following is matter?. Physical & Chemical Changes. © 2013 Michelle Brosseau, Mrs. Brosseau’s Binder. Matter is anything that has . mass. . and takes up . space. .. Chemistry is the study of matter and the changes it undergoes. . S8P1d. Distinguish between physical and chemical properties of matter as physical (i.e., density, melting point, boiling point) or chemical (i.e., reactivity, combustibility) How are physical and chemical properties different? Physical and Chemical Changes Physical and Chemical Properties Everything around us has physical and chemical properties. Physical Properties Characteristics you can observe without changing the substance into something new. . are organic molecules that are the building block of . . proteins. .. -There is 20 . α. -amino acids commonly found in . proteins. . ( . they . have a carboxyl group and an amino group . . . A. PHYSICAL PROPERTIES. Optical properties: . All amino acids except glycine possess optical isomers due to the presence of asymmentric carbon atom. Some amino acids have a second assymmentric carbon e.g. isoleucine, threonine.. Dissociation. Optical Activity. Solubility, Hydration and Swelling Power. Dissociation. Proteins, like amino acids, are amphoteric.. Depending on pH, they can exist as polyvalent (cations, anions or . Size. Colloidal solutions. Charge. UV absorption. Solubility. Physical properties. Molecular weight. :. Vary from. 6000 . to million Daltons (Da) . Protomeric. proteins. : 50. . 000 . to. 100. . Proteins are naturally-occurring biopolymers comprised of amino acids. . The biological function of proteins is inherent in their three dimensional structure.. All the information required for correct folding of the protein into its functional .