Module 8 DBA & Exam Review 
This review is neither a replica of the exam nor does it contain every concept in the module.  It is always best practice to review all lessons and assessments and ensure you have the completed journals. Resubmitting is a great way to review/learn and improve your grade.   In this review, questions 1 – 25 are the general topics for the multiple choice type questions on the module exam; questions 26-27 could be covered as an essay on the exam. Questions 28 - 31 are the honors extension questions. The number in parenthesis is the corresponding lesson. Please reach out to your instructor with any questions (answer key is in progress).
Segment 2 Formula Sheet - Google Copy
Segment 2 Formula Sheet - RTF download

●	Module 8 Regular Exam: There are 18 questions on the actual exam
○	16 multiple choice and 2 essay/free responses.
●	Module 8 Honors Exam: There are 18 questions on the actual exam
○	16 multiple choice and 2 essay/free responses.
Multiple Choice format questions:
1.	What happens to water when it warms above 212⁰F? (8.01)
a.	It contracts			c.  Its composition changes
b.	Its density decreases		d.  It forms a gas

2.	Which of the following is a correct property that makes water essential for life? (8.01)
a.	Frozen water is less dense than liquid	
b.	Water heats up quickly compared to other liquids
c.	It has a low surface tension		
d.	It is nonpolar

3.	What is the strongest intermolecular force experienced in water?  (8.01)
a.	London dispersion		c. Capillary action
b.	Hydrogen bonding		d. Cohesion

4.	Which factor does not affect solubility of a solute? (8.01)
a.	Surface tension		c. Surface area
b.	Temperature			d. Pressure

5.	Which of the following is information you need to know to calculate molarity? (8.02)
a.	Liters solute			c. Moles solution
b.	Liters solution			d. Mass solute 		

6.	Which of the following is information you need to know to calculate molarity? (8.02)    
a.	Liters of solute 		c. Total mass of solution             			
b.	Moles solute			d. Moles solution

7.	What is the molarity of a 1.5-liter solution containing 98 grams of HCl? (8.02)
a.	18.2 M				c. 1.8 M
b.	10.2 M				d. 5.2 M

8.	 If 24.3 grams of NaCl are dissolved in 192 grams of water, what is the concentration of the solution in percent by mass? (8.02)
a.	11.2%				c. 5.3%
b.	9.35%				d. 2.3%

9.	How many grams of zinc metal will react completely with 2.54 L of 4.6 M HCl? (8.02)
Zn (s) + 2 HCl (aq) --> ZnCl2 (aq) + H2 (g)
a.	4.5 g				c. 280 g
b.	380 g				d. 75 g

10.	Which of the following is the correct formula for dilution? (8.02)
a.	MsVs = MdVd				c.  MsVd = MdVs
b.	Moles solute / grams solution		d.  Grams solute/ grams solution

11.	Which of the following is true when you make 2.3 liters of a 1.0 molar HCl solution from a 10.0 molar HCl stock solution? (8.02)
a.	The volume of the solvent used was less than 0.7 liters.
b.	The volume of stock solution used is less than 1.0 liter.
c.	The volume of the solvent used is less than 0.2 liters.
d.	The volume of the stock solution used is more than 2.3 liters.

12.	What is the mass of H2O2 required to make 500 grams of a 3.4% solution of H2O2? (8.02)
a.	23.1 g				c. 17.5 g
b.	147 g				d. 26.2 g

13.	Define acid. (8.04)
 
14.	What makes an acid to be classified as a ‘strong’ acid? (8.04)  

15.	List three general properties of acids. (8.04) 

16.	List 2 weak acids. (8.04) Note: be able to recognize weak and strong acids/bases in a multiple choice format and explain them in essay form.

17.	List three general properties of bases. (8.04)  

18.	What is the salt and acid, respectively in the following reaction? (8.04)   
HCl + NaOH → H2O + NaCl  

19.	Which of the following is not true for litmus paper indicators? (8.04) Note:  Please be sure to be able to describe the pros and cons for each of the four pH indicators discussed in the video on page 3 of the lesson.
a.	Litmus paper changes color in the presence of an acid or base. 
b.	The litmus paper cannot determine exact pH.
c.	Litmus paper turns blue at the level of 8.2 and higher and determines the substance to be an acid.
d.	The litmus paper turns deep red at the level of 4.5.

20.	 What could you do if you needed to increase the pH of the solution? (8.04)  

21.	Generally speaking, what is the relationship between pH and the concentration of hydrogen ions? (8.04)
a.	Linear; as hydrogen ions increase, the pH increases
b.	Inverse; as hydrogen ions increase, the pH decreases

22.	What is the pH of a solution with a concentration of 5.3 X 10-4 molar H3O+?   (8.05)
a.	3.28			c. 4.56
b.	9.25			d. 2.46

23.	Which of the following would have a pH of 7. (8.05)
a.	Equal volumes of acid and base			
b.	Equal moles of acid and salt
c.	Equal concentrations of hydroxide and hydronium	
d.	Equal concentrations of salt and water

24.	What is the relationship between pH and concentration of hydroxide? (8.05)
a.	Linear; as hydroxide ions increase, the pH increases
b.	Inverse; as hydroxide ions increase, the pH decreases

25.	A solution has a hydroxide (OH-) concentration of 2.4 × 10−3 M. What is the hydronium (H3O+) concentration of the solution?
a.	2.4 × 10−17 M		c. 4.2 × 10−17 M
b.	2.4 × 10−10 M		d. 4.2 × 10−12 M

Essay format questions:
26.	What is the term for when water can move against gravity? (8.01)
a.	Cohesion			c.  Polarity
b.	Surface tension		d. Capillary action
Note: Be sure to be able to describe all terms in your own words

27.	Describe the pH range for acids and bases (don’t give just the values). (8.04) 
Honors Extension (MC and Essay format)
28.	(8.06H) Are all renewable resources “clean” resources? 
a.	Yes			b.  No

29.	(8.06H) Which of the following statements is true about the use of coal?
a.	It is efficient and inexpensive.		
b.	It is a renewable resource
c.	This energy source does not pollute the atmosphere.
d.	It is a clean source of energy.

30.	(8.06H )Which of the following statements is true about the use of nuclear power? 
a.	They are very expensive to construct and maintain.
b.	They are relatively inexpensive, but requires lots of land
c.	It is considered clean, but could pollute land
d.	It is a clean source of energy

31.	(8.06H) Which energy best fits this description:  This energy makes use of garbage and agricultural waste while reducing our dependence on fossil fuels.
a.	Geothermal energy			b. Coal
b.	Nuclear Power				d. Hydropower