Chem 161 - Study guides, Class notes & Summaries

Test Bank Chemistry: A Molecular Approach, 6th edition by Tro Chapter 1 - 10

CHRM Chem 161 Exam 2 Questions & Answers 2024/2025 Chemical Kinetics - ANSWERS- how fast the reactants change into products occur Reaction Rate - ANSWERSthe change in the concentrations of reactants (or products) as a function of time Different reactions have different rates: - ANSWERSin a faster reaction (higher rate), the reactant concentration decreases quickly, whereas in a slower reaction (lower rate), it decreases slowly Four control factors that affect rate: - ANSWERS1) the ...

CHEM 161 Exam Questions and Answers – Latest 2023/2024 (Verified Answers) 100% Correct Contents 1 CHEM 161 Lecture 1 Answers 2 Chem 161 Lecture 2 Answers 3 Chem 161 Lecture 3 Answers 4 Chem 161 Lecture 4 5 Chem 161 Lecture 5 Answers 6 Chem Lecture 6 Answers 7 Chem 161 Lecture 7 Answers 8 Chem 161 Equations 9 Chem 161 Compounds 10 Chem 161 Polyatomic Ions 11 CHEM 161 EXAM 1 Answers 12 CHEM 161 EXAM 2 Answers 13 Chem 161 Final Exam Answs 14 Chem & 161 Course Overview 14.1 Learnin...

CHEM 161 EXAM 2 Answers actual yield the experimental quantity, in grams, of product obtained in a reaction. Avogadro’s number the number of particles (6.022 x 10^23) of a substance in 1 mol of that substance. By definition, Avogadro’s number is equal to the number of carbon-12 atoms in exactly 12.00 g of carbon-12. balanced appropriate coefficients have been added such that the number of atoms of each element are the same in both reactants and products. chemical equation a prec...

scientific theory explains how/why. based on observations/experiments, makes testable predictions, changes over time based on new evidence, can be falsifiable scientific law predicts what happens intensive property independent of the amount of substance present (color, odor, maleability, density) extensive property depends upon amount of substance you have (mass, length, volume) physical property A characteristic of a pure substance that can be observed without changing it into ano...

Chem 161 Final Exam Answers latest update 2023 rated A+ Beta particle emission that is a high energy electron. the electron comes from a neutron so when it is emitted, the atomic number goes up by one, but the atomic mass remains the same alpha particle emission that is basically a helium nucleus (2+ charge), so when it is emitted the atomic number goes down by 2 and the atomic mass goes down by 4 Alkali metals first column Alkaline earth metals second column halogens group befor...

Chem 161 Lecture 2 Answers 2023 UPDATE RATED A+ How can matter be classified? Matter: Purity: 1. Pure Substances A. Elements B. Compounds 2. Mixtures A. Homogenous Solutions B. Heterogenous Solutions What are the differences between compounds and mixtures? Compounds: 1) Definite Composition (with exact chemical formula) 2) Have different properties than the elements making up the compound (H20 is liquid compared to H2 and O as gases) 3) Can be separated into its elements only by chemic...

Chem 161 Lecture 4 2023 UPDATE RATED A+ What is the threshold frequency? v0 = if you vary the frequency of the incident light, it is found that there is a certain minimum threshold frequency below which no electrons are emitted What happens if you are below the threshold frequency? No electrons are emitted regardless of the brightness of the light What happens if you are above the threshold frequency? Electrons are emitted, and the higher the frequency, the higher the KE of the emitte...

Chem 161 Lecture 7 Answers 2023 UPDATE RATED A+ What is ionic lattice? An ionic lattice is a long-range array of positive and negative ions, held together by electrostatic attraction What is ionic lattice measured in? kJ/mol What does lattice energy depend on? These comparisons can be answered by recognizing that lattice energy depends on both the charge of the ion and the size of each ion—which determines the distance between the oppositely charged ions What formula shows the for...