Question.4169 - 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?
Answer Below:
Chemistry xx Life xxxxxxxxx Worksheet xxxx out xxxx worksheet xx you xxxxxxxx your xxxxxxxxx assignments xxxxx your xxxxxxxxx worksheet xx class xx use xx a xxxxxxxxx for xxxxxxxx activities xxxxx completing xxxx pre-class xxxxxxxxxxx you xxxxxx be xxxx to xxxxxxxx the xxxxxxxxx of xx atom xxxxxx and xxxxxx the xxxxx electronegativity xxx polarity xxxxxxx how xxxxxxxx and xxxxx covalent xxxxx are xxxxxx between xxxxx Explain xxx the xxxxxxxxx energy xx two xxxxx changes xx they xxxx or xxxxx a xxxx Describe xxxx type xx atomic xxxx and xxxxxxxxxxxxxx force xxxxxxxx covalent xxxxx polar xxxxxxxx bonds xxxxx bonds xxxxxxxx bonds xxx van xxx Waals xxxxx forces xxxxxx the xxxxx hydrophilic xxx hydrophobic xxxxxxx of xxxx textbook xxxxxxxx the xxxxx structure xx atoms xxx each xxxxxxxxx particle xxxxxx below xxxxxxxx its xxxxxx how xx contributes xx the xxxxxxx mass xx an xxxx and xxxxx it xx located xxxxxx the xxxxxxxxx of xxx atom x Proton xxxxx are xxxxxxxxxx charged xxxxxxxxx located xx the xxxxxxx contributing xxxxxxxxxxxxx to xxx atom xxxxx s xxxx approximately xxxxxx mass xxxx AMU x Neutron xx is x neutral xxxxxx particle xxx even xxxxxxx in xxx nucleus xxxx a xxxxxx contributing xxxxxxxxxxxxx to xxx atom xxxxx s xxxx approximately xx AMU x Electron xxxxx are xxxxxxxxxx charged xxxxxxxxx that xxxx a xxxxxxxxxx mass xxxx approx xxx as xxxxxxxx with xxxxxxx and xxxxxxxx located xx the xxxxxxxx orbitals xxxxxx the xxxxxxx The xxxxx ldquo xxxxx of xxxxxx Bonds xxxxx shows x graph xxxx the xxx below xx your xxx words xxxxxxx what xxxxxxxxxxx is xxxxxxxx in xxxx graph xxx then xxxxxxxx what xx represented xx each xxxxxxx point xx the xxxxx A x C x Information xxxxxxxx in xxxxx Point xxxxx have xxxx far xxxxx where xxxxx has xxxx no xxxxxxxxxxx interaction xxxxxxxxxx that xxxxxxxxx energy xx high xxxxx Atoms xxxx been xxxxxx closer xxxxxxxxxxx each xxxxx where xxxxx attractive xxxxxx reduce xxx potential xxxxxx Point xxx bound xxxxx at xxxx stable xxxxxxxxxxx point xxxxx potential xxxxxx is xx its xxxxxxx Point xxxxxxxxx forces xxxx been xxxxxxxxxx as xxxxxx come xxx close xxxxx potential xxxxxx has xxxx increasing xxxxxx Examine xxx diagram xx water xxxxx from xxxxxx The xxxxx and xxxxx - xxxxxxx represent xxxxxxx negative xxx partial xxxxxxxx charges xx the xxxxx of xxx water xxxxxxxx Explain xxxx it xxxxx for xx atom xx be xxxxx partially xxxxxxx rdquo xx your xxxxxx try xx use xxx terms xxxxxxxxxxxxxxxxx and xxxxx covalent xxxx nbsp xx atom xxx been xxxxxxxxx charged xxxx it xxx an xxxxxx distribution xx electrons xxx to xxxxxxxxxxx in xxxxxxxxxxxxxxxxx In xxxxx oxygen xxx been xxxx electronegative xxxx hydrogen xx the xxxxxx electrons xx the xxxxx covalent xxxxx spend xxxx time xxxxxx oxygen xxxxxxxx a xxxxxxx negative xxxxxx delta x on xxxxxx and xxxxxxx positive xxxxxx delta 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 nbsp xxxxxx of xxxxxxxxx shared xx the xxxxxxxx atoms xxxx be xxx same xxxxx covalent xxxx A xxxxx covalent xxxx has xxxx a xxxx of xxxxxxxx bond xxxxx electrons xxxx shared xxxxxxxxx between xxx atoms xxx to x difference xx their xxxxxxxxxxxxxxxxx resulting xx one xxxx having x slightly xxxxxxxx charge xxx other xxxxxx a xxxxxxxx negative xxxxxx creating x dipole xxxxxx within xxx molecule xxxxxxxxxxx one xxxx pulls xxx shared xxxxxxxxx closer xx itself xxxx strongly xxxx the xxxxx Non-Covalent xxxxxxxxxxxx Ionic xxxx It xx a xxxx of xxxxxxxx bonding xxxxxxxxx electrostatic xxxxxxxxxx between xxxxxxxxxx charged xxxx or xxxxxxx two xxxxx with xxxxxxx different xxxxxxxxxxxxxxxxxxx and xx the xxxxxxx interaction xxxxxxxxx in xxxxx compound xxxxxxxx bond xxxxxxxx bond xxx been x special xxxx 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 rsquo xxxxxx This xxxxxxx attraction xxx repulsions xxxxxxx atoms xxxxxxxxx as xxxx as xxxxx intermolecular xxxxxx differing xxxx covalent xxx ionic xxxxxxx in xxxx they xxxx been xxxxxx by xxxxxxxxxxxx in xxx fluctuating xxxxxxxxxxxxx of xxxxxx particles xxxxxx the xxxxx hydrophilic xxx hydrophobic xxx do xxxxx terms xxxxxxxxx relate xx the xxxxxxxx of x molecule xxxxxxxxxxx These xxx the xxxxxxxxxx that xxxxxxxx well xxxx water xx their xxxxxxxx or xxxxxxx to xxxx hydrogen xxxx 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 water xxxxMore Articles From Biology
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