CEM 142 Bundled Exams Questions and Answers Latest Versions (Complete, Accurate, and Verified)

HOMEWORK EXAM 1 CHEM 142 QUESTIONS AND ANSWERS GRADED A Is there an attraction between two neutral helium atoms? Explain in detail why or why not. Be sure to include any evidence you have for your claim and how this supports your reasoning. Yes; 2 helium atoms can be attracted because the elec...

Chem 142 UW Exam 1 Latest Version Already Passed The atom Consists of a small nucleus with a positive charge containing most of the weight. Has an electron cloud with mostly empty space but some electrons as well Protons The chemical identity of the element Electrons Ionic character of ...

CEM 142 Besocratic (Chp 5+6) Questions With Complete Solutions What happens to the number of distinguishable arrangements as the number of molecules in the system increase? Increase Once dye molecules are mixed up with the water molecules, they will not "unmix" why? The probability of the...

CEM 142 MOCK EXAM 2 QUESTIONS AND ANSWERS ALREADY PASSED Imagine a reaction in which compound A (which is a blue compound) reacts with compound B (which is a yellow compound) to give AB. A2 + B2 --> 2AB What can you say about the color of compound AB? It is impossible to predict what the...

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 i...

CEM 142 First Exam Latest Update Already Passed Define and give examples of open, closed and isolated systems Open system-both matter and energy can enter or leave (beaker without a lid, pour your hot drink into a mug) Closed system- the amount of matter is constant and only energy can ent...

CEM 142 Exam 1 Latest Version Already Graded A Open system mass/matter as well as energy can flow in and out of the system closed system mass/matter can not flow into the system but energy can flow in and out of the system isolated system nothing can enter or leave the system what is...

CEM 142 EXAM 2 LATEST UPDATE GRADED A+ **ACID = ELECTRON PAIR ACCEPTOR Acid= electrophile **BASE = ELECTRON PAIR DONOR base= nucleophile strong acid fully ionizes in solution/completely dissociates weak acid does not fully ionize or dissociate into ions ** negatively charged ...

CEM 142 EXAM 1 LATEST UPDATE GRADED A+ bond BREAKING ABSORB energy from surroundings -requires energy to overcome bond FORMING RELEASE energy to surroundings effective nuclear charge charge felt by valence electrons -increase in ENC attracts electrons more strongly toward the nucle...

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 molecule...