Imfs Samenvattingen, Aantekeningen en Examens

UNE CHEM 1011 MIDTERM Exam Questions with Correct Answers Intermolecular forces - Correct Answer attractive forces that exist between molecules particles in a solid - Correct Answer tightly packed together, arranged in a regular pattern and generally DO NOT move in relation to one another particles in a liquid - Correct Answer close together with no regular arrangement; can move past each other but remain in essentially constant contact particles in a gas - Correct Answer are far apart...

Intermolecular forces (IMFs) correct answer: the forces of attraction between molecules of covalent compounds (weak) Intramolecular forces correct answer: forces within molecules. Forces caused by the attraction and repulsion of charged particles (strong) Dispersion forces correct answer: present in all molecules attractions between molecules caused by the electron motion on one molecule affecting the electron motion on the other through electrical forces; these are the weakest inter...

CEM 142 MSU Final Exam Questions and Answers Already Passed Does aqueous sugar conduct electricity, why or why not No, because there are no ions Does aqueous NaCl conduct electricity? Yes, because this is an ionic compound (metal/nonmetal) What is the only IMF present in non polar molecules London Dispersion Forces How does electronegativity change in the periodic table Electronegativity increases from left to right (with the right being most electronegative), and increases from bo...

What are the 4 types of intermolecular forces listed from weakest to strongest? CORRECT ANSWER London dispersion, dipole-dipole, hydrogen bonding, ion-dipole What effect does IMFs have on surface tension? CORRECT ANSWER surface tension increases as strength of IMF increase What effect does IMFs have on viscosity? CORRECT ANSWER viscosity increases as strength of IMFs increase What effect does IMFs have on boiling point? CORRECT ANSWER boiling point increases as strength of IMFs increase...

CEM 142 Exam 3 MSU Questions and Answers Rated A+ What do you know about reactions? (make a list) -Atoms are conserved. They are only re- arranged. -Properties of products are emergent (not a mixture of the reactants properties). -Reactions can be classified by the type of reaction (how it occurs). -Reactions are always accompanied by an energy change (can be exo and endo) that results from changed in interactions (bonds and IMFs) in the reactants and products. -Reactions are alway...

The phase in which a substance exists depends on the relative extents of its- correct answer: Intermolecular forces and kinetic energies of its molecules van der Waals forces correct answer: a slight attraction that develops between the oppositely charged regions of nearby molecules Londen dispersion forces correct answer: attraction between two rapidly fluctuating, temporary dipoles; significant only when particles are very close together instantaneous dipole correct answer: a flee...

What are the 4 types of intermolecular forces listed from weakest to strongest? - London dispersion, dipole-dipole, hydrogen bonding, ion-dipole What effect does IMFs have on surface tension? - surface tension increases as strength of IMF increase What effect does IMFs have on viscosity? - viscosity increases as strength of IMFs increase What effect does IMFs have on boiling point? - boiling point increases as strength of IMFs increase Which are miscible in water: polar or nonpolar compou...

The phase in which a substance exists depends on the relative extents of its- correct answer: Intermolecular forces and kinetic energies of its molecules van der Waals forces correct answer: a slight attraction that develops between the oppositely charged regions of nearby molecules Londen dispersion forces correct answer: attraction between two rapidly fluctuating, temporary dipoles; significant only when particles are very close together instantaneous dipole correct answer: a flee...

Intermolecular forces - ANSWER- non bonding forces - found BETWEEN molecules - influence the energy physical properties of the substances Physical properties examples - ANSWERboiling point, melting point, solubility, color, odor, etc. T/F: stronger intermolecular forces correlate to a higher boiling point - ANSWERTrue Kinetic energy - ANSWER- provides the energy needed to overcome intermolecular forces What is kinetic energy associated with? - ANSWERThe random motion of particles...

Chem 210 Exam 1 Questions & Answers(Graded A+) Intermolecular forces - ANSWER- non bonding forces - found BETWEEN molecules - influence the energy physical properties of the substances Physical properties examples - ANSWERboiling point, melting point, solubility, color, odor, etc. T/F: stronger intermolecular forces correlate to a higher boiling point - ANSWERTrue Kinetic energy - ANSWER- provides the energy needed to overcome intermolecular forces What is kinetic energy ass...