50+ organic chemistry worksheets on Quizizz | Free & Printable - Free Printable
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Step-by-step solution for: 50+ organic chemistry worksheets on Quizizz | Free & Printable
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Show Answer Key & Explanations
Step-by-step solution for: 50+ organic chemistry worksheets on Quizizz | Free & Printable
Here is the completed Organic Chemistry quiz with explanations for each answer:
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1. Tendency of an element to link with its own identical atoms is known as
✔ Catenation
*Explanation:* Catenation is the unique ability of certain elements (most notably carbon) to form long chains or rings by bonding with atoms of the same element. Carbon exhibits this property exceptionally well due to the strength and stability of its covalent bonds.
---
2. How many valency does carbon have?
✔ 4
*Explanation:* Carbon has 4 valence electrons (electron configuration: 1s² 2s² 2p²). To achieve a stable octet, it forms 4 covalent bonds, giving it a valency of 4.
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3. Isomers are organic compounds having same ______ formula and different ______ formula.
✔ molecular, structural
*Explanation:* Isomers are compounds that share the same molecular formula (same number and type of atoms) but differ in their structural formula (how atoms are connected or arranged in space).
---
4. Every homologue member differ by ______ group
✔ CH₂
*Explanation:* In a homologous series, each successive member differs from the previous one by a —CH₂— group (methylene group). For example, methane (CH₄), ethane (C₂H₆), propane (C₃H₈), etc.
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5. CₙH₂ₙ₊₂ is the general formula for ______ series.
✔ alkane
*Explanation:* Alkanes are saturated hydrocarbons with only single bonds. Their general formula is CₙH₂ₙ₊₂, where n = number of carbon atoms. Example: Propane (C₃H₈).
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6. Alkynes are ______ bonded compounds
✔ triple
*Explanation:* Alkynes are unsaturated hydrocarbons containing at least one carbon-carbon triple bond (C≡C). Their general formula is CₙH₂ₙ₋₂.
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7. Alkene are ______ compounds
✔ unsaturated
*Explanation:* Alkenes contain at least one carbon-carbon double bond (C=C), making them unsaturated hydrocarbons. They can undergo addition reactions because they have fewer hydrogen atoms than alkanes.
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8. Aliphatic organic compounds are ______ chain compounds
✔ open
*Explanation:* Aliphatic compounds have open-chain structures (straight or branched), as opposed to aromatic compounds which have ring structures (like benzene). Examples: methane, ethane, ethanol.
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9. 90% of naturally occurring compounds are organic in nature due to ______ and ______.
✔ carbon and hydrogen
*Explanation:* Organic compounds are primarily composed of carbon and hydrogen atoms, often with oxygen, nitrogen, sulfur, etc. The vast diversity of life and natural substances arises from carbon’s ability to form complex molecules with hydrogen and other elements.
*(Alternative acceptable answers: “catenation” and “tetravalency”, or “versatility” and “bonding capacity” — but “carbon and hydrogen” is most direct and commonly accepted.)*
---
10. Organic Compound having 3 carbon atoms in a chain has root word as ______
✔ prop
*Explanation:* In IUPAC naming, the root word indicates the number of carbon atoms in the longest continuous chain:
- 1 carbon → meth
- 2 carbons → eth
- 3 carbons → prop
- 4 carbons → but
- etc.
Example: Propane (C₃H₈), Propene (C₃H₆).
---
✔ Final Answer Key:
1. Catenation
2. 4
3. molecular, structural
4. CH₂
5. alkane
6. triple
7. unsaturated
8. open
9. carbon, hydrogen
10. prop
Let me know if you’d like a printable version or further explanations!
---
1. Tendency of an element to link with its own identical atoms is known as
✔ Catenation
*Explanation:* Catenation is the unique ability of certain elements (most notably carbon) to form long chains or rings by bonding with atoms of the same element. Carbon exhibits this property exceptionally well due to the strength and stability of its covalent bonds.
---
2. How many valency does carbon have?
✔ 4
*Explanation:* Carbon has 4 valence electrons (electron configuration: 1s² 2s² 2p²). To achieve a stable octet, it forms 4 covalent bonds, giving it a valency of 4.
---
3. Isomers are organic compounds having same ______ formula and different ______ formula.
✔ molecular, structural
*Explanation:* Isomers are compounds that share the same molecular formula (same number and type of atoms) but differ in their structural formula (how atoms are connected or arranged in space).
---
4. Every homologue member differ by ______ group
✔ CH₂
*Explanation:* In a homologous series, each successive member differs from the previous one by a —CH₂— group (methylene group). For example, methane (CH₄), ethane (C₂H₆), propane (C₃H₈), etc.
---
5. CₙH₂ₙ₊₂ is the general formula for ______ series.
✔ alkane
*Explanation:* Alkanes are saturated hydrocarbons with only single bonds. Their general formula is CₙH₂ₙ₊₂, where n = number of carbon atoms. Example: Propane (C₃H₈).
---
6. Alkynes are ______ bonded compounds
✔ triple
*Explanation:* Alkynes are unsaturated hydrocarbons containing at least one carbon-carbon triple bond (C≡C). Their general formula is CₙH₂ₙ₋₂.
---
7. Alkene are ______ compounds
✔ unsaturated
*Explanation:* Alkenes contain at least one carbon-carbon double bond (C=C), making them unsaturated hydrocarbons. They can undergo addition reactions because they have fewer hydrogen atoms than alkanes.
---
8. Aliphatic organic compounds are ______ chain compounds
✔ open
*Explanation:* Aliphatic compounds have open-chain structures (straight or branched), as opposed to aromatic compounds which have ring structures (like benzene). Examples: methane, ethane, ethanol.
---
9. 90% of naturally occurring compounds are organic in nature due to ______ and ______.
✔ carbon and hydrogen
*Explanation:* Organic compounds are primarily composed of carbon and hydrogen atoms, often with oxygen, nitrogen, sulfur, etc. The vast diversity of life and natural substances arises from carbon’s ability to form complex molecules with hydrogen and other elements.
*(Alternative acceptable answers: “catenation” and “tetravalency”, or “versatility” and “bonding capacity” — but “carbon and hydrogen” is most direct and commonly accepted.)*
---
10. Organic Compound having 3 carbon atoms in a chain has root word as ______
✔ prop
*Explanation:* In IUPAC naming, the root word indicates the number of carbon atoms in the longest continuous chain:
- 1 carbon → meth
- 2 carbons → eth
- 3 carbons → prop
- 4 carbons → but
- etc.
Example: Propane (C₃H₈), Propene (C₃H₆).
---
✔ Final Answer Key:
1. Catenation
2. 4
3. molecular, structural
4. CH₂
5. alkane
6. triple
7. unsaturated
8. open
9. carbon, hydrogen
10. prop
Let me know if you’d like a printable version or further explanations!
Parent Tip: Review the logic above to help your child master the concept of organic chemistry printables.
