
Concept explainers
Interpretation : The reason for some molecules to be attracted to a charged wand is to be explained using electronegativity.
Concept Introduction :
The tendency of an atom to attract shared electrons is called electronegativity. Atom with higher electronegativity attracts more electrons than atom with low electronegativity.

Answer to Problem 7E
A polar molecule is a molecule that possesses partial charges on its atoms. There is a partial positive and a partial negative charge on atoms. This is due to the difference in electronegativity of atoms forming the bond.Atoms that are more electronegative have partial negative charge and atoms that are less electronegative have positive charge. This results in formation of a polar bond.
Polar molecules are attracted by a charged wand.
Explanation of Solution
A molecule is polar due to the difference in electronegativity of atoms forming the bond which causes difference in sharing of electrons. One atom that is more electronegative attracts the shared electrons more strongly than the other atom. Because of this, displacement of electrons of one atom develops a partial negative charge and other atom develops a partial positive charge. The result is a polar molecule.
When a charged wand is brought near a polar liquid like water, it attracts the stream of water. This is due to polarity in water molecules. The water molecules have slight negative charge on oxygen atom and slight positive charge on hydrogen atoms as oxygen is more electronegative than hydrogen. Due to this the hydrogen atoms orient themselves towards the negatively charged wand and the whole stream of water gets attracted towards the wand.
Some liquids are polarin nature such as water, vinegar, rubbing alcohol etc. These are attracted by the charged wand.
The tendency of an atom to attract shared electrons is called electronegativity. Difference in electronegativity of atoms results in formation of a polar bond. This causes polar molecules to get attracted towards a charged wand.
Chapter U2 Solutions
Living By Chemistry: First Edition Textbook
Additional Science Textbook Solutions
Biology: Life on Earth with Physiology (11th Edition)
Human Anatomy & Physiology (2nd Edition)
Microbiology: An Introduction
Chemistry: Structure and Properties (2nd Edition)
Applications and Investigations in Earth Science (9th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
- Draw a stepwise mechanism for the following reaction. OHarrow_forwardHelp with annotating the labeled peaks in the 'H NMR (solvent CDCls) spectra and 'H NMR (solvent Acetone-D6) spectra Also help with Calculating the keto-enol tautomerization Ka constant for the product in both solvents.Two solvents and two different Kaarrow_forwardDraw a Haworth projection of a common cyclic form of this monosaccharide CH₂OH HO H HO H H OH CH₂OHarrow_forward
- Can you explain how I get these here and show the steps plz?arrow_forwardGive the IUPAC name for this compound Hydrocarbon Condensed Formulas Hint C2H5 CH2CH3 expand that in all the formula Part A: (CH3)2CHCH(C2H5)CH2CH2CH3 Give the IUPAC name for this compound. Part B: CH2=C(C2H5)CH2CH2CH3 Give the IUPAC name for this compound. Part C: (CH3)2C=CHC(C2H5)=CH2 Give the IUPAC name for this compound. Part D: CH3C=CCH(C2H5)2 Give the IUPAC name for this compound. Part E: (CH3)3CC=CCH2CH=C(CH3)2arrow_forwardSelect/ Match the correct letter from the image below for the IUPAC names given below: A B C D 3 E F G H K L Part 1. 4-methylheptane For example.mmmm Answer Letter H _for part 1 Part 2. 2,4-dimethylhexane Part 3. 2,3-dimethylpentane Part 4. 2,2-dimethylhexane Part 5. 2-ethyl-1,1,3,3-tetramethylcyclopentane Part 6. 3-ethyl-2-methylpentanearrow_forward
- Can u show the process as to how to get these?arrow_forwardSketch the expected 'H NMR spectra for the following compound. Label all of the H's in the structure and the corresponding signal for the spectra you sketch. Make sure you include the integration value and the splitting pattern for each signal Indicate how many signals you would expect in the 13C NMRarrow_forwardUse IUPAC naming rules to name the following hydrocarbon compounds: CH2-CH3 | a) CH-CH-CH2-CH-CH-CH3 b) | CH2 CH3 | CH3 CH3 \ / C=C H 1 H CH2-CH3 c) d) CH=C-CH3 e) CH3-CH2-CH2-CH=CH-CH3 f) CH2=CH-CH2-CH=CH-CH3 g) CH3-CH2-C = C-CH2-CH3 h)arrow_forward
- Q5 Name the following : a. b. C. d. e.arrow_forward25. Predict the major product of the following reaction. 1 equivalent of each of the starting materials was used. H₂C CH3 CH3 H3C H3C H3C. CH2 + H3C. heat CH3 CH H.C. CH3 H.C H.C CH3 CH CH3 CH3 A B C Earrow_forwardFind chemical structures based on the below information. a) Chemical formula C6H8O Compound is aromatic plus has two 1H NMR peaks that integrated for 3 each that are singlets (it could have more peaks in the 1H NMR b) Chemical Formula: C6H100 Compounds is conjugated 'H NMR has a signal that integrates for 6 and is a doublet IR spectra has a signal at 1730 cm-1arrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY





