Free Printable Naming Molecular Compounds Worksheets - Free Printable
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Step-by-step solution for: Free Printable Naming Molecular Compounds Worksheets
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Step-by-step solution for: Free Printable Naming Molecular Compounds Worksheets
Absolutely! Let’s solve this Molecular Compounds Worksheet step by step.
Molecular compounds are formed between nonmetals, and their formulas are written using prefixes to indicate the number of atoms of each element. The prefixes are:
- mono- = 1 (usually omitted for the first element)
- di- = 2
- tri- = 3
- tetra- = 4
- penta- = 5
- hexa- = 6
- hepta- = 7
- octa- = 8
- nona- = 9
- deca- = 10
---
---
1. Trisilicon Tetranitride
- “Tri-” → 3 silicon atoms → Si₃
- “Tetra-” → 4 nitrogen atoms → N₄
- Formula: Si₃N₄
> *Note: This is a common ceramic material, also called silicon nitride.*
---
2. Carbon Disulfide
- “Carbon” → 1 carbon atom → C (mono- is omitted)
- “Di-” → 2 sulfur atoms → S₂
- Formula: CS₂
---
3. Dinitrogen Tetrahydride
- “Di-” → 2 nitrogen atoms → N₂
- “Tetra-” → 4 hydrogen atoms → H₄
- Formula: N₂H₄
> *This is hydrazine, a rocket fuel.*
---
4. Phosphorus Pentabromide
- “Phosphorus” → 1 P atom → P (mono- omitted)
- “Penta-” → 5 bromine atoms → Br₅
- Formula: PBr₅
---
5. Carbon Tetrafluoride
- “Carbon” → 1 C atom → C
- “Tetra-” → 4 fluorine atoms → F₄
- Formula: CF₄
> *Also known as tetrafluoromethane.*
---
6. Dicarbon Pentoxide
- “Di-” → 2 carbon atoms → C₂
- “Penta-” → 5 oxygen atoms → O₅
- Formula: C₂O₅
> *Note: This compound is not very stable or common; it's theoretical or reactive. But based on naming rules, this is correct.*
---
7. Sulfur Hexafluoride
- “Sulfur” → 1 S atom → S
- “Hexa-” → 6 fluorine atoms → F₆
- Formula: SF₆
> *A very stable, inert gas used in electrical insulation.*
---
8. Phosphorus Tribromide
- “Phosphorus” → 1 P atom → P
- “Tri-” → 3 bromine atoms → Br₃
- Formula: PBr₃
---
9. Sulfur Trioxide
- “Sulfur” → 1 S atom → S
- “Tri-” → 3 oxygen atoms → O₃
- Formula: SO₃
> *Important industrial chemical, precursor to sulfuric acid.*
---
10. Chlorine Pentoxide
- “Chlorine” → 1 Cl atom → Cl
- “Penta-” → 5 oxygen atoms → O₅
- Formula: ClO₅
> *Actually, chlorine pentoxide is not a stable compound under normal conditions — the common oxide is Cl₂O₇ (dichlorine heptoxide). But per naming rules, if given as "chlorine pentoxide", we write ClO₅.*
---
11. Diphosphorus Trioxide
- “Di-” → 2 phosphorus atoms → P₂
- “Tri-” → 3 oxygen atoms → O₃
- Formula: P₂O₃
> *Also called phosphorus trioxide.*
---
12. Carbon Monoxide
- “Carbon” → 1 C atom → C
- “Mono-” → 1 oxygen atom → O (mono- is often included for the second element if it’s 1)
- Formula: CO
> *Common toxic gas.*
---
13. Carbon Dioxide
- “Carbon” → 1 C atom → C
- “Di-” → 2 oxygen atoms → O₂
- Formula: CO₂
---
14. Phosphorus Trichloride
- “Phosphorus” → 1 P atom → P
- “Tri-” → 3 chlorine atoms → Cl₃
- Formula: PCl₃
---
15. Tetracarbon Decoxide
- “Tetra-” → 4 carbon atoms → C₄
- “Deca-” → 10 oxygen atoms → O₁₀
- Formula: C₄O₁₀
> *This is not a common stable compound — but again, following naming rules strictly, this is the formula.*
---
## ✍️ Final Answer Sheet:
1. Si₃N₄
2. CS₂
3. N₂H₄
4. PBr₅
5. CF₄
6. C₂O₅
7. SF₆
8. PBr₃
9. SO₃
10. ClO₅
11. P₂O₃
12. CO
13. CO₂
14. PCl₃
15. C₄O₁₀
---
✔ All formulas follow standard molecular compound naming rules using prefixes. Some compounds (like C₂O₅, ClO₅, C₄O₁₀) are either unstable or theoretical, but they are written correctly based on the given names.
Let me know if you’d like to learn how to name compounds from formulas too!
Molecular compounds are formed between nonmetals, and their formulas are written using prefixes to indicate the number of atoms of each element. The prefixes are:
- mono- = 1 (usually omitted for the first element)
- di- = 2
- tri- = 3
- tetra- = 4
- penta- = 5
- hexa- = 6
- hepta- = 7
- octa- = 8
- nona- = 9
- deca- = 10
---
✔ Solutions with Explanations:
---
1. Trisilicon Tetranitride
- “Tri-” → 3 silicon atoms → Si₃
- “Tetra-” → 4 nitrogen atoms → N₄
- Formula: Si₃N₄
> *Note: This is a common ceramic material, also called silicon nitride.*
---
2. Carbon Disulfide
- “Carbon” → 1 carbon atom → C (mono- is omitted)
- “Di-” → 2 sulfur atoms → S₂
- Formula: CS₂
---
3. Dinitrogen Tetrahydride
- “Di-” → 2 nitrogen atoms → N₂
- “Tetra-” → 4 hydrogen atoms → H₄
- Formula: N₂H₄
> *This is hydrazine, a rocket fuel.*
---
4. Phosphorus Pentabromide
- “Phosphorus” → 1 P atom → P (mono- omitted)
- “Penta-” → 5 bromine atoms → Br₅
- Formula: PBr₅
---
5. Carbon Tetrafluoride
- “Carbon” → 1 C atom → C
- “Tetra-” → 4 fluorine atoms → F₄
- Formula: CF₄
> *Also known as tetrafluoromethane.*
---
6. Dicarbon Pentoxide
- “Di-” → 2 carbon atoms → C₂
- “Penta-” → 5 oxygen atoms → O₅
- Formula: C₂O₅
> *Note: This compound is not very stable or common; it's theoretical or reactive. But based on naming rules, this is correct.*
---
7. Sulfur Hexafluoride
- “Sulfur” → 1 S atom → S
- “Hexa-” → 6 fluorine atoms → F₆
- Formula: SF₆
> *A very stable, inert gas used in electrical insulation.*
---
8. Phosphorus Tribromide
- “Phosphorus” → 1 P atom → P
- “Tri-” → 3 bromine atoms → Br₃
- Formula: PBr₃
---
9. Sulfur Trioxide
- “Sulfur” → 1 S atom → S
- “Tri-” → 3 oxygen atoms → O₃
- Formula: SO₃
> *Important industrial chemical, precursor to sulfuric acid.*
---
10. Chlorine Pentoxide
- “Chlorine” → 1 Cl atom → Cl
- “Penta-” → 5 oxygen atoms → O₅
- Formula: ClO₅
> *Actually, chlorine pentoxide is not a stable compound under normal conditions — the common oxide is Cl₂O₇ (dichlorine heptoxide). But per naming rules, if given as "chlorine pentoxide", we write ClO₅.*
---
11. Diphosphorus Trioxide
- “Di-” → 2 phosphorus atoms → P₂
- “Tri-” → 3 oxygen atoms → O₃
- Formula: P₂O₃
> *Also called phosphorus trioxide.*
---
12. Carbon Monoxide
- “Carbon” → 1 C atom → C
- “Mono-” → 1 oxygen atom → O (mono- is often included for the second element if it’s 1)
- Formula: CO
> *Common toxic gas.*
---
13. Carbon Dioxide
- “Carbon” → 1 C atom → C
- “Di-” → 2 oxygen atoms → O₂
- Formula: CO₂
---
14. Phosphorus Trichloride
- “Phosphorus” → 1 P atom → P
- “Tri-” → 3 chlorine atoms → Cl₃
- Formula: PCl₃
---
15. Tetracarbon Decoxide
- “Tetra-” → 4 carbon atoms → C₄
- “Deca-” → 10 oxygen atoms → O₁₀
- Formula: C₄O₁₀
> *This is not a common stable compound — but again, following naming rules strictly, this is the formula.*
---
## ✍️ Final Answer Sheet:
1. Si₃N₄
2. CS₂
3. N₂H₄
4. PBr₅
5. CF₄
6. C₂O₅
7. SF₆
8. PBr₃
9. SO₃
10. ClO₅
11. P₂O₃
12. CO
13. CO₂
14. PCl₃
15. C₄O₁₀
---
✔ All formulas follow standard molecular compound naming rules using prefixes. Some compounds (like C₂O₅, ClO₅, C₄O₁₀) are either unstable or theoretical, but they are written correctly based on the given names.
Let me know if you’d like to learn how to name compounds from formulas too!
Parent Tip: Review the logic above to help your child master the concept of molecules and compounds worksheet.
