Numbered Heads Together How does this cooperative structure work?

Numbered Heads Together You work in group of 4. I will number you 1 to 4 I pose a question. 4. You each write the answer on a separate piece of paper that I give you 5. All 4 in the group then put their heads together to ensure all members can answer the question 6. I call a number and if you have this number, you share your group’s answers with the class. Practice Questions p.42 #5. Arrange the following compounds in order of increasing boiling point, and give reasons for your answer. a) butane b) 1-butanol c) octane d) 1-octanol #6. Glycerol is more viscous than water, and can lower the freezing point of water; when added to biological samples, it helps to keep the tissues from freezing, thereby reducing damage. From your knowledge of the molecular structure of glycerol, suggest reasons to account for these properties of glycerol. p.48 #2. Explain why the propane that is used as fuel in a barbecue is a gas at room temperature, but 2-propanol used as rubbing alcohol is a liquid at room temperature. #3. Draw the structures and write the IUPAC names of the two alkenes that are formed when 2-hexanol undergoes an elimination reaction in the presence of an acid catalyst. #5. Draw the structures and write the IUPAC names of all the ethers that are isomers of 2-butanol. #7. For each of the following pairs of compounds, select the one that has the higher boiling point. Give reasons for your answer a) ethylene glycol or glycerol b) water or methoxymethane c) methanol or propanol d) methoxyethane or propanol p.52 #4. Write the IUPAC name for the following compounds: a) acetone b) formaldehyde c) acetaldehyde p.63 #7. When a bottle of wine is left open to the air for a period of time, the wine often loses its alcoholic content and starts to taste sour. Write a series of equations to illustrate the reactions. p.66 #12. Name the following esters, and the acids and alcohols from which they could be prepared. a) CH3CH2COOCH2CH3 c) HCOOCH2CH2CH2CH3 b) CH3CH2CH2COOCH3 d) CH3COOCH2CH2CH3 p.68 #3. Draw the structures of the compounds formed by condensation reactions between t he following reactants, and write IUPAC names for each product. a) formic acid and 2-butanol b) acetic acid and 1-propanol c) benzoic acid and methanol p.78 #2. Look at the following pairs of compounds and arrange each pair in order of increasing solubility in nonpolar solvents. Give reasons for you answer. a) an alcohol and an amine of similar molecular mass b) a primary amine and a tertiary amine of similar molecular mass c) a hydrocarbon and a tertiary amine of similar molecular mass

Q1. Use the Functional group priority list, name this molecule

4-ethyl-3-hydroxycyclohexanone Q1. Answer Ketone: highest priority, numbered as 1 Then alcohol then ethyl 4-ethyl-3-hydroxycyclohexanone

Q2. Use the Functional group priority list, name this molecule

(2E)-2-methyl- 4-oxohex-2-enoic acid Q2. Answer (2E)-2-methyl- 4-oxohex-2-enoic acid

Q3. Draw this molecule N- ethyl-3-hydroxy-5-methylhept-6-enamide

Q3. Answer

Q 4. Explain why the propane that is used as fuel in a barbecue is a gas at room temperature, but 2-propanol used as rubbing alcohol is a liquid at room temperature.

Q4. Answer Propane is a gas because it is held together by weak dispersion forces. 2-Propanol is a liquid because it has dd force and can H-bond.

Q 5. Draw the structures and write the IUPAC names of all the non-alcohol isomers of 2-butanol.

Q5. Answer Butan-2-ol: C4H9OH i) 1-methoxypropane ii) 2-methoxypropane iii) ethoxyethane

Q6. a. explain what phenomenon occurs here. b Q6. a. explain what phenomenon occurs here? b. how does it account for the difference between the bp/mp of this acid and an alcohol with same # of C?

Q6. Answer a. dimerization of 2 acids b Q6. Answer a. dimerization of 2 acids b. higher bp/mp than the alcohol because acids can form 2 H bonds whereas OH can only form one

Q7. Circle & name all functional groups present in this molecule

Q7. Answer

Quiz-Quiz-Trade Work in pair I will pose a topic You (Partner A) create a question to quiz your partner on the topic. 4. Partner B answer the question I pose another topic Partner B create a new question Partner A does nothing 7. Partner A rotates to the next partner to answer their question. Practice Questions p.42 #5. Arrange the following compounds in order of increasing boiling point, and give reasons for your answer. a) butane b) 1-butanol c) octane d) 1-octanol #6. Glycerol is more viscous than water, and can lower the freezing point of water; when added to biological samples, it helps to keep the tissues from freezing, thereby reducing damage. From your knowledge of the molecular structure of glycerol, suggest reasons to account for these properties of glycerol. p.48 #2. Explain why the propane that is used as fuel in a barbecue is a gas at room temperature, but 2-propanol used as rubbing alcohol is a liquid at room temperature. #3. Draw the structures and write the IUPAC names of the two alkenes that are formed when 2-hexanol undergoes an elimination reaction in the presence of an acid catalyst. #5. Draw the structures and write the IUPAC names of all the ethers that are isomers of 2-butanol. #7. For each of the following pairs of compounds, select the one that has the higher boiling point. Give reasons for your answer a) ethylene glycol or glycerol b) water or methoxymethane c) methanol or propanol d) methoxyethane or propanol p.52 #4. Write the IUPAC name for the following compounds: a) acetone b) formaldehyde c) acetaldehyde p.63 #7. When a bottle of wine is left open to the air for a period of time, the wine often loses its alcoholic content and starts to taste sour. Write a series of equations to illustrate the reactions. p.66 #12. Name the following esters, and the acids and alcohols from which they could be prepared. a) CH3CH2COOCH2CH3 c) HCOOCH2CH2CH2CH3 b) CH3CH2CH2COOCH3 d) CH3COOCH2CH2CH3 p.68 #3. Draw the structures of the compounds formed by condensation reactions between t he following reactants, and write IUPAC names for each product. a) formic acid and 2-butanol b) acetic acid and 1-propanol c) benzoic acid and methanol p.78 #2. Look at the following pairs of compounds and arrange each pair in order of increasing solubility in nonpolar solvents. Give reasons for you answer. a) an alcohol and an amine of similar molecular mass b) a primary amine and a tertiary amine of similar molecular mass c) a hydrocarbon and a tertiary amine of similar molecular mass

Parent chain name should be al; aldehyde higher priority than alcohol Topic # 1: First round Partner A: Create a molecule with aldehyde & alcohol functional group. Partner B: Name the molecule posed by partner A

Topic # 2: Functional groups to work with : DB & an ester Ester higher priority; -onate ending but en appears in the name to indicate the DB Topic # 2: Functional groups to work with : DB & an ester

Topic # 3: Functional groups to work with : one amine, one amide & a ketone