Chemistry 121 Molecular Compounds
Study for Chemistry Test
Questions and Answers
- 1.
The name for a molecular coumpound with a 1 after it is called ______________
- A.
Tri
- B.
Mono
- C.
Di
Correct Answer
B. MonoExplanation
When a molecular compound has a "1" after it, it indicates that there is only one atom of each element present in the compound. The prefix "mono" is used to represent the number one in chemical nomenclature. Therefore, the correct name for a molecular compound with a "1" after it is "mono".Rate this question:
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- 2.
The name for a molecular coumpound with a 2 after it is called ______________
- A.
Di
- B.
Mono
- C.
Tri
Correct Answer
A. DiExplanation
When a molecular compound has a 2 after it, it indicates that there are two atoms of that compound present. In this case, the correct answer is "Di" because it represents the prefix for two. So, a molecular compound with a 2 after it is called "Di" to indicate that there are two atoms of that compound.Rate this question:
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- 3.
The name for a molecular coumpound with a 3 after it is called ______________
- A.
Di
- B.
Penta
- C.
Tri
Correct Answer
C. TriExplanation
When a molecular compound has a numerical prefix after it, it indicates the number of atoms of each element in the compound. In this case, the numerical prefix is "3", which means there are three atoms of each element in the compound. The correct name for a molecular compound with three atoms of each element is "Tri".Rate this question:
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- 4.
The name for a molecular coumpound with a 4 after it is called ______________
- A.
Hexa
- B.
Tri
- C.
Tetra
Correct Answer
C. TetraExplanation
When a molecular compound has a number after it, it indicates the number of atoms of each element in the compound. In this case, the number is 4, so the compound is called "Tetra." The prefix "tetra" means four, so it accurately describes the composition of the compound.Rate this question:
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- 5.
The name for a molecular coumpound with a 5 after it is called ______________
- A.
Penta
- B.
Di
- C.
Hepta
Correct Answer
A. PentaExplanation
The correct answer is "Penta." In chemical nomenclature, the prefix "penta-" is used to indicate the presence of five atoms or groups of atoms in a molecule. Therefore, when a molecular compound has a "5" after it, it is called "penta." This prefix is commonly used in naming compounds such as pentane, pentanol, or pentene, which all contain five carbon atoms.Rate this question:
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- 6.
The name for a molecular coumpound with a 6 after it is called ______________
- A.
Tetra
- B.
Hexa
- C.
Penta
Correct Answer
B. HexaExplanation
The name for a molecular compound with a 6 after it is called "Hexa". The prefix "Hexa" indicates that there are six atoms of the element present in the compound. In chemistry, prefixes are used to indicate the number of atoms of each element in a compound. In this case, "Hexa" specifically refers to six atoms.Rate this question:
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- 7.
The name for a molecular coumpound with a 7 after it is called ______________
- A.
Tri
- B.
Hepta
- C.
Penta
Correct Answer
B. HeptaExplanation
The prefix "hepta" indicates the presence of 7 atoms of a particular element in a compound. Therefore, a molecular compound with a 7 after it would be called "hepta." This prefix is commonly used in chemistry to denote the number of atoms present in a compound, making it easier to identify and name different compounds.Rate this question:
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- 8.
CO in a molecular compound would be called ________________
- A.
Carbon Monoxide
- B.
Nitrogen triiodide
- C.
Sulfur Hexafluoride
Correct Answer
A. Carbon MonoxideExplanation
CO in a molecular compound would be called Carbon Monoxide. This is because CO is a chemical formula that represents a compound composed of one carbon atom and one oxygen atom. The name "Carbon Monoxide" is derived from the elements present in the compound.Rate this question:
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- 9.
SiO2 in a molecular compound would be called ________________
- A.
Sulfur Hexafluoride
- B.
Nitrogen triiodide
- C.
Silicon Dioxide
Correct Answer
C. Silicon DioxideExplanation
SiO2 is the chemical formula for silicon dioxide, which is a molecular compound. Therefore, the correct name for SiO2 in a molecular compound would be Silicon Dioxide.Rate this question:
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- 10.
NI3 in a molecular compound would be called ________________
- A.
Sulfur Hexafluoride
- B.
Carbon tetrachloride
- C.
Nitrogen triiodide
Correct Answer
C. Nitrogen triiodideExplanation
NI3 in a molecular compound would be called Nitrogen triiodide because it is composed of one nitrogen atom and three iodine atoms. The prefix "tri-" indicates the presence of three iodine atoms, and "nitrogen" is the name of the central atom. Therefore, the compound is named Nitrogen triiodide.Rate this question:
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- 11.
CCI4 in a molecular compound would be called ________________
- A.
Sulfur Hexafluoride
- B.
Carbon tetrachloride
- C.
Iodine Heptafluoride
Correct Answer
B. Carbon tetrachlorideExplanation
Carbon tetrachloride is a molecular compound that consists of one carbon atom and four chlorine atoms. According to the naming rules for molecular compounds, the prefix "tetra-" is used to indicate the presence of four chlorine atoms. Therefore, CCI4 in a molecular compound would be called carbon tetrachloride.Rate this question:
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- 12.
PCI5 in a molecular compound would be called ________________
- A.
Phosphorus pentachloride
- B.
Sulfur Hexafluoride
- C.
Carbon Monoxide
Correct Answer
A. Phosphorus pentachlorideExplanation
The correct answer is Phosphorus pentachloride because it follows the naming convention for molecular compounds, where the first element is named first followed by the second element with an -ide ending. In this case, "phosphorus" is the first element and "chloride" is the second element, and the prefix "penta-" indicates that there are five chlorine atoms bonded to one phosphorus atom.Rate this question:
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- 13.
SF6 in a molecular compound would be called ________________
- A.
Nitrogen triiodide
- B.
Silicon Dioxide
- C.
Sulfur Hexafluoride
Correct Answer
C. Sulfur HexafluorideExplanation
SF6 is a compound consisting of sulfur and fluorine atoms. The prefix "hexa-" indicates that there are six fluorine atoms bonded to one sulfur atom. Therefore, the name "Sulfur Hexafluoride" accurately describes the composition of this molecular compound.Rate this question:
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- 14.
IF7 in a molecular compound would be called ________________
- A.
Nitrogen triiodide
- B.
Iodine Heptafluoride
- C.
Phosphorus pentachloride
Correct Answer
B. Iodine HeptafluorideExplanation
The correct answer is Iodine Heptafluoride because IF7 is the chemical formula for Iodine Heptafluoride.Rate this question:
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Mar 21, 2023Quiz Edited by
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Oct 02, 2009Quiz Created by
Roadman19771
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