CHEM 210 Exams 1 to 8 Final Examination Study Guide, Exams of Chemistry

Download CHEM 210 Exams 1 to 8 Final Examination Study Guide and more Exams Chemistry in PDF only on Docsity!

FINALEXAMS RATED

100% VERIFIED

QUESTIONS AND

ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

FINALEXAMS RATED

100% VERIFIED

QUESTIONS AND

ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

FINALEXAMS RATED

100% VERIFIED

QUESTIONS AND

ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

)

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

Question 13 / 3 pts

True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule.

TrueCorrect!

False Question 2 3 / 3 pts True or False: Biomolecules can have only two functional groups. True Correct! False Question 3 3 / 3 pts True or False: The following functional group is an alcohol.

True Correct! False Question 4

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

3 / 3 pts

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

True or False: digesting macromolecules. In a eukaryotic cell, the organelles called peroxisomes serve the purpose of

True Correct! False Question 5 3 / 3 pts True or False: Carbon dioxide has a linear molecular shape AND has a bond angle of 109.5o. True Correct! False Question 6 3 / 3 ptsOf the following, is not a property of carbon.

forming covalent bonds triple bond formation Correct! possessing five valence electrons reacting to form long chains called polymers forming multiple bonds Question 73 / 3 pts Which of the following is an element not typically found in living organisms? NCorrect!

He H S

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

O

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

Question 83 / 3 pts is a functional group found in carbohydrates. Esters Thiols Carboxylic acidsCorrect!

Alcohols Amines Question 9 3 / 3 pts The following functional group is an example of.

Correct! Ketone Thiol Amide Benzene Aldehyde Question 100 / 3 pts A is a chemical formula that does NOT show the C-H and C-C bonds.

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

You Answered Covalent formula Line bond formula Empirical formula Kekule’ structure Correct Answer Condensed formula Question 11 3 / 3 pts A collection of two or more macromolecules uniting is called a.

Correct! Supramolecular complex Monomer Macromolecular structure Dimer Kekule’ complex Question 12 3 / 3 ptsAn organic compound with this structure, C=C, contains a functional group.

Alkane Correct! Alkene Alkyne Alcohol

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

Both b and d

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

Question 133 / 3 pts Scientists refer to as the “super glue” of the chemistry. Correct! C Co Na N O Question 143 / 3 pts What molecule is most important for energy storage in cells? Creatine mitochondria DNA RNA Correct! ATP Question 15 3 / 3 pts What would be the approximate size of a human cell? a. 12 μ m

b. 1 nm c.d. 15 nm0.2 inch e. 15 cm Correct!

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

a.

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

b. c. d. e. Question 163 / 3 pts For propane, there carbon and hydrogen atoms. 5, 12 4, 10 Correct! 3, 8 3, 6 None of the above Question 17 3 / 3 pts For an organic compound, which structure is the most efficient to draw? Correct! Line bond Condensed Lewis structure Structural formula None of these Question 18 3 / 3 pts When writing an organic functional group, scientists often write an “R” as part of the structure. What does the R indicate?

A string of carbon atoms

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

Radon Routine carbon atom Correct! Rest of the molecule None of the above Question 19 3 / 3 pts According to the module, the study of NON-carbon compounds is referred.

Organic chemistry Correct! Inorganic chemistry Biochemistry Environmental chemistry None of the above. Question 20 3 / 3 pts Which of the following is not a functional group discussed in this module? Alcohol Amine Ketone Aldehyde Correct! All of these were discussed. Question 21 3 / 3 pts

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

Which number would be closest to the approximate number of ribosomes in an E. coli cell?

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

A. 1

B. 25

C. 250Correct!

D. 25, E. Both c and d Question 220 / 3 pts Which of the following would most likely have a cell wall? Correct Answer Marigold flower cells Deer cells Heart cells Human red blood cellsYou Answered

All of the above Question 23 0 / 3 pts Eukaryotes have molecules that provide protective structural. This network is called the.

Cell wall You Answered Cytoplasm Cytosol Correct Answer Cytoskeleton

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

Both Cell wall and Cytoskeleton Question 24 3 / 3 pts The molecule linked to the medical condition of gout isCorrect!.

Uric acid Luciferin Luciferase Glucose Glycine Question 25 3 / 3 pts About how many different elements are found in living organisms?

Correct! 30 50 68 92 Question 26 3 / 5 pts (Short response) Explain the common similarity in all prokaryotic and eukaryotic cells. Give abrief explanation of the similarity. Your Answer: The common similarity between prokaryotic and eukaryotic cells are they both contain cells, acell membrane and ribosomes.

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

The fundamental similarity is that each cell type has a plasma membrane that separates life from non-life. The plasma membrane acts as a barrier to most molecules but does have proteins that permit select molecules to cross via proteins (transporters). The plasmamembrane permits the cell to have a different composition of molecules inside the cell than out and defines a space for life to occur. Develop the membrane response further, based on module material. Question 27 2.5 / 5 pts(Short response) Would scientists be more likely to find an element such as O in a biomolecule, or W? Explain which she would more likely find in biological molecule and give specific physical/chemical properties.Your Answer:

Scientists would be more likely to find an element of O in a biomolecule because O is a bulkelement while W is a trace element. O is found is most strcutures and functional groups.

She would more likely find O. Smaller elements are preferred. In the case of O, it is found in water, so it would be highly concentrated. Smaller elements with smaller atomic shellsare favored because they can form stable covalent bonds. Strong bonds form by significant overlap of atoms, such as carbon and hydrogen permitting them to share electrons. The bond that forms requires a substantial amount of energy to break, which allows the bondsto withstand insults, such as mechanical and thermal stresses. This bond strength is good news for living organisms. Stable bonds allow cells to form, hair to grow, and skin toprotect against abrasion.

Larger elements, such as W, tend to form ionic compounds–not covalent. Describe why O is using the size/overlap. Question 28 3.5 / 5 pts(Short response) What element is the basis for life? Describe at least two properties of this element that permit it to serve the basis for life.Your Answer:

Carbon is the element that is the basis for life. Carbon has the ability to form stable covalent bonds and unique combinations. Carbon has its own branch organic chemistry.

1. Carbon can form strong covalent bonds with a variety of different elements. 2. Besides, carbon can form double and triple bonds with other carbon atoms and other elements (N and o). 3. Carbon can form long chains by forming numerous carbon-carbon bonds; we

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

call these large molecules polymer. 4. Lastly, carbon can form cyclic structures, which are also called ring compounds. Give one more property of carbon. Question 29 (^4) (Short response) How does organic chemistry differ from inorganic chemistry? / 5 pts Your Answer: Organic chemistry is focues on the chemical and physical properties of carbon and inorganic chemistry focues on non organic compounds. Organic chemistry is the study of the carbon-based compounds. Inorganic chemistry is the study of all other elements, but carbon. There is no need to have separate sub-disciples fororganic and inorganic chemistry, but for historical and organizational reasons the difference exists. Include the non-carbon elements in your defintion of inorganic. Question 30 0 / 5 pts (Short response) Biochemists study the communication within and among organisms. According to the module, what are two other aspects of living organisms that biochemists study? Your Answer: Bichemists study carbs and proteins in living organism along with chemistry and biology. Also luciferin i studies and luciferase. In the module, biochemists also study the structure and function of biomolecules and the chemical reactions of organisms. Be more specific here. This is related to the homework problems and module material.

EXAM 2

Question 1 3 / 3 pts The pH of a solution of 0.0010 M NaOH is:

(^1) Correct!

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/

EXAMINATION STUDY

GUIDE

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/2025

EXAMINATION STUDY

GUIDE

[Kw=[H+][OH-] = 1.0 x 10-14; [H+][0.0010] = 1.0 x 10-14^ [H+]=1.0 x 10-11; pH=-log[1.0 x 10-11;]=11]

8 0 14 Question 2 3 / 3 pts Water is a unique molecule. Which of the following contributes tochemical world? water’s unique place in the

The geometry of the molecule The polarity of the O-H bonds The ability of water molecules to hydrogen bond The bond angle of water Correct! All of the answers are correct Question 3 0 / 3 pts The bent shape of water is due to.

The dipole arrows in a water molecule The electronegativity difference between hydrogen and oxygenYou Answered

The unequal electron sharing between hydrogen and oxygenCorrect Answer

The unshared electron pairs on the oxygen atom

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/2025

EXAMINATION STUDY

GUIDE

None of the answers are correct

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/2025

EXAMINATION STUDY

GUIDE

Question 40 / 3 pts

Which diagrams correctly represent a hydrogen bond?

Correct Answer A and D A and C You Answered B and C C and D B and D Question 5 0 / 3 pts The H+^ concentration of a solution is 1.2 x 10-3^ M. What is the pH? -1.20 1.20You Answered

3.12 -2.92

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/2025

EXAMINATION STUDY

GUIDE

Correct Answer 2.92 Question 63 / 3 pts If the Ka of an acid is 5.63 x 10-3, what is the pKa? 6.86 Correct! 2.25 [pKa = -log(5.63 x 10-3) = 2.25] 5.63 10.12 1.38 Question 7 3 / 3 pts List the acids in DECREASING order of strength (strongest to weakest): Nitrous acid (Ka = 4.0 x 10-4); acetic acid (Ka = 1.7 x 10-5); phosphoric acid (Ka = 7.3 x 10-3)

Nitrous acid, acetic acid, phosphoric acid Acetic acid, nitrous acid, phosphoric acid Correct! Phosphoric acid, nitrous acid, acetic acid Acetic acid, phosphoric acid, nitrous acid None of the above Question 8 0 / 3 pts Elemental iodine (I 2 ) is a solid at room temperature. What is the dominant attractive force that exists between I 2 molecules in the solid?

FINALEXAMS RATED 100%

VERIFIED QUESTIONS

AND ANSWERS LATEST

UPDATED 2024/2025

EXAMINATION STUDY

GUIDE

Correct Answer