Question.4168 - Chemistry of Life Pre-Class Worksheet Fill out this worksheet as you complete your pre-class assignments. Bring your completed worksheet to class to use as a reference for in-class activities. After completing your pre-class assignments, you should be able to: Describe the structure of an atom Define and relate the terms electronegativity and polarity Explain how nonpolar and polar covalent bonds are formed between atoms Explain how the potential energy of two atoms changes as they form or break a bond Describe each type of atomic bond and intermolecular force: nonpolar covalent bonds, polar covalent bonds, ionic bonds, hydrogen bonds, and van der Waals forces Define the terms hydrophilic and hydrophobic 1. Section 2.1 of your textbook explains the basic structure of atoms. For each subatomic particle listed below, describe its charge, how it contributes to the overall mass of an atom, and where it is located within the structure of the atom. Proton Neutron Electron 2. The video Types of Atomic Bonds shows a graph like the one below. In your own words explain what information is conveyed in this graph and then describe what is represented at each labeled point on the graph (A, B, C, D). left781800Information conveyed in graph: Point 1: Point 2: Point 3: Point 4: 3. Examine the diagram of water below (from Figure 2.7). The ?+ and ?- symbols represent partial negative and partial positive charges on the atoms of the water molecule. Explain what it means for an atom to be partially charged. In your answer, try to use the terms electronegativity and polar covalent bond. 4. The videos and reading have introduced you to several types of covalent bonds and non-covalent interactions. In the table below, provide a brief definition for each kind of bond or interaction. Covalent Bonds Nonpolar covalent bond Polar covalent bond Non-Covalent Interactions Ionic bond Hydrogen bond van der Waals forces 5. Define the terms hydrophilic and hydrophobic. How do these terms typically relate to the polarity of a molecule?
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xx oxygen xxx partial xxxxxxxx charge xx hydrogen xxx videos xxx reading xxxx introduced xxx to xxxxxxx types xx covalent xxxxx and xxxxxxxxxxxx interactions xx the xxxxx below xxxxxxx a xxxxx definition xxx each xxxx of xxxx or xxxxxxxxxxx Covalent xxxxx Nonpolar xxxxxxxx bond xx is x type xx chemical xxxx where xxxxxxxxx have xxxx shared xxxxxxx between xxx atoms xxxxxxx there xxx been xx significant xxxxxxxxxx in xxxxxxxxxxxxxxxxx between xxx atoms xxxxxxxx resulting xx a xxxxxxxx distribution xx electrical xxxxxx within xxx molecule xxxx in xx atom xxx number xx electrons xxxxxx by xxx adjacent xxxxx will xx the xxxx Polar xxxxxxxx bond x polar xxxxxxxx bond xxx been x type xx covalent xxxx where xxxxxxxxx have xxxxxx unequally xxxxxxx two xxxxx due xx a xxxxxxxxxx in xxxxx electronegativity xxxxxxxxx in xxx atom xxxxxx a xxxxxxxx positive xxxxxx and xxxxx having x slightly xxxxxxxx charge xxxxxxxx a xxxxxx moment xxxxxx the xxxxxxxx essentially xxx atom xxxxx the xxxxxx electrons xxxxxx to xxxxxx more xxxxxxxx than xxx other xxxxxxxxxxxx Interactions xxxxx bond xx is x type xx chemical xxxxxxx involving xxxxxxxxxxxxx attraction xxxxxxx oppositely xxxxxxx ions xx between xxx atoms xxxx sharply xxxxxxxxx electronegativities xxx is xxx primary xxxxxxxxxxx occurring xx ionic xxxxxxxx Hydrogen xxxx Hydrogen xxxx has xxxx a xxxxxxx type xx dipole-dipole xxxxxxxxxx between xxxxxxxxx not x covalent xxxx to x hydrogen xxxx resulting xxxx the xxxxxxxxxx force xxxxxxx a xxxxxxxx atom xxxxxxxxxx bonded xx a xxxx electronegative xxxx such xx a x O xx F xxxx and xxxxxxx very xxxxxxxxxxxxxxx atom xxx der xxxxx forces xxxx include xxxxxxxxxx and xxxxxxxxxx between xxxxx molecules xx well xx other xxxxxxxxxxxxxx forces xxxxxxxxx from xxxxxxxx and xxxxx bonding xx that xxxx have xxxx caused xx correlations xx the xxxxxxxxxxx polarizations xx nearby xxxxxxxxx Define xxx terms xxxxxxxxxxx and xxxxxxxxxxx How xx these xxxxx typically xxxxxx to xxx polarity xx a xxxxxxxx Hydrophilic xxxxx are xxx substances xxxx interact xxxx with xxxxx to xxxxx polarity xx ability xx form xxxxxxxx bonds xxxx generally xxxxx molecules xxxx as xxxxx NaCl xx sugars xxxx to xx hydrophilic xxxxxxxxxxx Nonpolar xxxxxxxxxx or xxxxx substances xxxx do xxx interact xxxx with xxxxx and xxxxx unable xx form xxxxxxxx bonds xxx termed xx hydrophobic xxx instance xxxx and xxxx are xxxxxxxxxxx since xxxx are xxxxxxxx molecules xxxxxx no xx low xxxxxxxxxxx rate xxxx waterMore Articles From Biology
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