by elements on the left side of the periodic chart. Anions are negative and are formed by elements on the right side of the periodic chart. Ionic compounds (such as NaCl) are generally formed between metals and nonmetals Formula weight is the sum of the atomic weights for the atoms in a chemical formula. -Formula weights are generally reported for ionic compounds. Molecular weight is the sum of the atomic weights of the atoms in a molecule. Percent Composition (# of atoms)(atomic weight)
Premium Atom Ion Chemical bond
Chemistry Equipment Symbols 1. Test Tube 2. Boiling Tube 3. Beaker 4. Conical Flask 5. Test Tube Holder/ Tongs /Clamp Stand 6. Measuring/Graduating 7. Funnel 8. Pipette Cylinder 9. Spatula 10. Tripod 11. Bunsen Burner 12. Glass Bulb 13. Burette 16. Condenser Pipette Changes of State Filtering Solutions 03-Nov
Free Periodic table Atom Chemical element
molecules‚ geometric isomerism‚ purity for melting point determination; and intermolecular forces of attraction between molecules and branching for the boiling point determination. From the structure‚ intermolecular forces can be observed (hydrogen bonding‚ dipole-dipole interaction‚ or London dispersion forces)*. Along with these forces‚ geometric isomerism affects also. In terms of purity‚ a pure compound has higher melting point than compound with impurities. Branching‚ also a factor‚ makes a compound
Premium Hydrogen bond Carboxylic acid Melting point
polar covalent bonds involving: a. phosphate b. nitrogen c. oxygen d. both b and c 7. Denaturing a protein: a. can be caused by inappropriate pH or temperature b. is always irreversible c. may be used to regulate the number of specific proteins d. all of the above 8. Which of the following is consistent with an increase in affinity at a binding site? a. ligand is more likely to bind to the site b. ligand stays bound to site for a longer time c. increased in ionic or hydrogen
Premium Signal transduction
Campbell’s Biology‚ 9e (Reece et al.) Chapter 5 The Structure and Function of Large Biological Molecules In Chapter 5‚ the principles of chemistry covered in earlier chapters are applied to the understanding of biological polymers and lipid membranes. The emphasis is on properly linking monomers and their polymers‚ and on the structural and functional diversity of the different polymer types. Particular attention is given to protein structure‚ because this is central to understanding subsequent
Premium Protein Amino acid Oxygen
In insulators the heat flux is carried almost entirely by phonon vibrations. Metals (e.g. copper‚ platinum‚ gold‚etc.) are usually good conductors of thermal energy. This is due to the way that metals are chemically bonded: metallic bonds (as opposed to covalent or ionic bonds) have free-moving electrons which are able to transfer thermal energy rapidly through the metal. The "electron fluid" of a conductive metallic solid conducts most of the heat flux through the solid. Phonon flux is still present‚ but carries
Premium Heat transfer Thermodynamics Heat
preparation‚ wet chemistry methods‚ statistical evaluation of data. c. Review of concepts of stoichiometry (2 hours) Mole concept‚ concentrations‚ dilution and aliquots d. Review of concepts of equilibria (2 hours) Types of equilibrium constants‚ ionic equilibria‚ activity and activity coefficient. e. Gravimetric analysis (4 hours) General steps in gravimetric analysis; types of precipitates‚ solubility products‚ factors affecting solubility of precipitates‚ von Weimarn ratio‚ co-precipitation
Premium Chemistry
main types of chemical bonds are ionic bonds and covalent bonds • An ionic is formed when one or more electrons are transferred from one atom to another -an atom that loses electrons has a positive charge. -an atom that gains electrons has a negative charge • These positively and negatively charged atoms are known as ions • A covalent bond- forms when electrons are shared between atoms. -when the atoms share two electrons‚ the bond is called a single covalent
Premium Scientific method Science Theory
influenced by the number of electrons needed to complete the valence shell nonpolar covalent bonds: electrons are shared equally polar bonds: electrons are shared unequally; pulled more toward one atom and have charge hydrogen bonds- when H forms a polar bond with another atom‚ it takes on a slightly positive charged and is attracted to any nearby negatively charged atoms acids = proton donators bases = proton acceptors ionic bonds: occur when valence electrons are transferred from one atom to another
Premium Atom Protein Covalent bond
chemical means. 2- The Aufbau Principle states that energy levels must be filled from the highest to the lowest‚ when writing the election configuration. 3- Atomic radius decreases across a period and increases down a group. 4- Ionic compounds have low melting and boiling points. 5- Halogens are usually stored in oil to keep them from reacting with oxygen and water vapor. 6- The Duet rule states that elements will be stable with only 2 valence electrons. 7-
Free Periodic table Atom Chemical element