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Topic 10: Organic Chemistry
10. Alkyne hydrocarbons: Recalling concept facts and definitions
1. Which best describes bonding in alkynes molecules?
3) Single and triple covalent bonds
1) All singles covalent bonds
2) All triple covalent bonds 4) Single and double covalent bonds
2. The general formula for all alkyne molecules is
1) CnH2n 2) CnH2n+2 3) CnH2n-2 4) CnH2n+6
3. Each member of alkyne series of hydrocarbon has an IUPAC name that ends with
1) -yne 2) -ol 3) – ane 4) –ene
4. In an alkyne molecule, how many electrons are shared between two carbon atoms held together
with a triple bond?
1) 1 2) 2 3) 4 4) 6
Teacher Preview Copy
Teacher Preview Copy
5. How many pairs of electrons are found between two atoms in a triple bond?
1) 4
4) 6
2) 3
3) 8
6. As the length of chain of carbon atoms in alkyne molecules increase, the number of triple bonds
per molecule
1) Increases 2) Decreases 3) Remains the same
7. Which are true of all alkynes?
1) They contain all single bonds and are saturated hydrocarbons
2) They contain one triple bond and are unsaturated hydrocarbons
3) They contain one triple bond and are saturated hydrocarbons
4) They contain one double bond and are unsaturated hydrocarbons
11. Alkyne hydrocarbons: Recognizing names and formulas of alkynes
1. Which two IUPAC names are of compounds belonging to the alkyne series of hydrocarbons?
1) Ethyl and ethyne 3) Ethyne and octyne
2) Ethene and propanol 4) Ethyne and butonoate
2. Which two compounds are alkynes?
1) Propyne and pentyne 3) Hexene and hexyne
4) Hexane and Hexyne
2) Ethane and pentyne
3. Which two molecules belong to the alkyne series of hydrocarbons?
1) C6H6 and C6H7
3) C3H6 and C3H8
2) C6H10 and C7H12 4) C3H4 and C4H8
4. Which two formulas are alkynes?
1) C9H16 and C8H14 3) C3H6 and C3H8
2) C8H16 and C8H14 4) C5H10 and C6H12
5. Which is a structural formula of an alkyne hydrocarbon?
3)
1)
2) 4)
294 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
Topic 10: Organic Chemistry
10. Alkyne hydrocarbons: Recalling concept facts and definitions
1. Which best describes bonding in alkynes molecules?
3) Single and triple covalent bonds
1) All singles covalent bonds
2) All triple covalent bonds 4) Single and double covalent bonds
2. The general formula for all alkyne molecules is
1) CnH2n 2) CnH2n+2 3) CnH2n-2 4) CnH2n+6
3. Each member of alkyne series of hydrocarbon has an IUPAC name that ends with
1) -yne 2) -ol 3) – ane 4) –ene
4. In an alkyne molecule, how many electrons are shared between two carbon atoms held together
with a triple bond?
1) 1 2) 2 3) 4 4) 6
Teacher Preview Copy
Teacher Preview Copy
5. How many pairs of electrons are found between two atoms in a triple bond?
1) 4
4) 6
2) 3
3) 8
6. As the length of chain of carbon atoms in alkyne molecules increase, the number of triple bonds
per molecule
1) Increases 2) Decreases 3) Remains the same
7. Which are true of all alkynes?
1) They contain all single bonds and are saturated hydrocarbons
2) They contain one triple bond and are unsaturated hydrocarbons
3) They contain one triple bond and are saturated hydrocarbons
4) They contain one double bond and are unsaturated hydrocarbons
11. Alkyne hydrocarbons: Recognizing names and formulas of alkynes
1. Which two IUPAC names are of compounds belonging to the alkyne series of hydrocarbons?
1) Ethyl and ethyne 3) Ethyne and octyne
2) Ethene and propanol 4) Ethyne and butonoate
2. Which two compounds are alkynes?
1) Propyne and pentyne 3) Hexene and hexyne
4) Hexane and Hexyne
2) Ethane and pentyne
3. Which two molecules belong to the alkyne series of hydrocarbons?
1) C6H6 and C6H7
3) C3H6 and C3H8
2) C6H10 and C7H12 4) C3H4 and C4H8
4. Which two formulas are alkynes?
1) C9H16 and C8H14 3) C3H6 and C3H8
2) C8H16 and C8H14 4) C5H10 and C6H12
5. Which is a structural formula of an alkyne hydrocarbon?
3)
1)
2) 4)
294 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
