Skip to content
CramShare
FreePractice exam

Chemistry 120 Exam 2 study guide

CHEM100 Chemistry — exam and revision material · Other

Updated today

Chemistry exam material, 7 pages. Originally published on StudyMerit.

Pages
7
Academic year
2025/2026
Language
English

What’s included

Preview 3 of 7 pages

See the first 3 pages exactly as they appear in the document.

Read page 1 as text

CHM 120 Exam 2: Chapters 5,6,7,8 Exam 2 Total Points: 60 PART 1: Multiple Choice questions: Q 1-24. (2 point each) 1. Chemical reactions (equations) show the following a. Reactants b. Products c. Physical state of each (gas or liquid or solid) d. All of the above 2. The following is true for a mole a. It is also known as Avo gadro’s number b. It contains 6.022 * 10 23 molecules c. It contains mass equivalent to molecular weight d. All of the above are true 3. In balancing chemical equations, the coefficients are used to a. Show number of moles b. Show volume of each in liters c. Show amount of each in grams d. Show temperature at which the substance is stable 4. 2H2 + O2 2H2O means that a. 2 grams of H2 g and 1 gram of O2 gas combine to form 2 grams of water. b. 2 moles of H2 g and 1 mole of O2 gas combine to form 2 moles of water. c. 2 grams of H2 g and 1 gram of O2 gas combine to form 2 moles of water. d. 2 molecules of H2 g and 1 molecule of O2 gas combine to form 2 molecules of water. 5. 2H2 + O2 2H2O. In this equation, correct method to calculate molecular mass of water is a. 2[2(mass of hydrogen) + mass of oxygen] b. 2(mass of hydrogen gas) + mass of oxygen gas c. 2(mass of hydrogen) + mass of oxygen 6. One mole of O2 gas contains ___________ number of molecules. 1 Downloaded by Studymerit Dotcom (samuelkaruiki40@gmail.com) lOMoARcPSD|6879242

Read page 2 as text

CHM 120 Exam 2: Chapters 5,6,7,8 a. 32 Grams b. 1 c. 6.02 * 10 23 d. None of the above 7. Concentration of a solution is a. Amount of solute dissolved in given amount of solvent b. Amount of solute dissolved in 1 L of solvent c. 1 g of solute dissolved in given amount of solvent d. A mass equivalent to Molecular weight of solute dissolved in given amount of solvent 8. The following is a product of reaction of a nonmetal oxide with water to make acid. a. C6H12O6 b. H2CO3 c. NH4OH d. CO2 9. If CaO reacts with water, the following product will be made. a. Ca b. CaOH c. Ca(OH)2 d. H2Ca 10. The following will be made when KOH reacts with HCl a. KH b. KCl c. H2O d. B & c are true 11. “The neutralization reaction is a quantitative reaction, where amount of acid needed to neutralize the base can be accurately calculated.” This statement is a. True b. False 12. The pH scale represents the a. acidity of a solution b. whether the acid is strong acid or weak c. amount of salt 2 Downloaded by Studymerit Dotcom (samuelkaruiki40@gmail.com) lOMoARcPSD|6879242

Read page 3 as text

CHM 120 Exam 2: Chapters 5,6,7,8 d. all of the above 13. Buffer solution is a solution a. With constant concentration b. With constant pH c. Of weak base d. All of the above 14. Oxidation is defined as _________________. It occurs on a/an______________. a. Gain of electron; anode b. Gain of oxygen; anode c. Gain of hydrogen; Cathode d. Gain of electron; Cathode 15. Reduction is defined as _________________. It occurs on a/an______________. a. Gain of electron; Cathode b. Gain of oxygen; Cathode c. Loss of hydrogen; Anode d. Loss of oxygen; Anode 16. Oxidizing agents cause ________________. During that process they themselves are _______________. a. Oxidation, reduced b. Reduction, oxidized c. Oxidation, oxidized d. Reduction, reduced 17. Reducing agents cause ________________. During that process they themselves are _______________. a. Oxidation, reduced b. Reduction, oxidized c. Oxidation, oxidized d. Reduction, reduced 18. Silver tarnish is an example of __________ a. Oxidation b. Reduction 19. Oxygen is a ______________. 3 Downloaded by Studymerit Dotcom (samuelkaruiki40@gmail.com) lOMoARcPSD|6879242

That’s the free preview

You’ve read 3 of 7 pages. The whole document is yours with a free account, and it stays in your library.

Others on this course also opened

Free

With a free account