Chemical Bonds MCQ Exam: Quiz!
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What are chemical bonds? A chemical bond is a long-term attraction between atoms, ions, or molecules that allow for chemical compounds. The bond may result in the electronic force of magnetism between oppositely charged ions as in ionic connections or through the sharing of electrons as in a covalent bond. The strength of chemical bonds varies considerably. This quiz will teach you more about chemical bonds. All the best.
- 1.
What type of bond will form between 2 atoms of oxygen?
- A.
Metallic
- B.
Ionic
- C.
Polar covalent
- D.
Nonpolar covalent
Correct Answer
D. Nonpolar covalentExplanation
Because oxygen is a nonmetal it would form a covalent bond. Because the atoms are identical, they would have the same pull on the shared electrons so it would be a nonpolar bond.Rate this question:
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- 2.
What type of bond will form between nitrogen and oxygen?
- A.
Metallic
- B.
Ionic
- C.
Polar covalent
- D.
Nonpolar covalent
Correct Answer
C. Polar covalentExplanation
Nitrogen and oxygen are both nonmetals making it covalent, but oxygen would have a stronger pull on the shared electrons, meaning it would be polar.Rate this question:
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- 3.
An atom that has lost or gained electrons is called ____________.
- A.
An isotope
- B.
An ion
- C.
An allotrope
- D.
A neutral atom
Correct Answer
B. An ionExplanation
An ion is an atom that has lost or gained electrons. When an atom loses electrons, it becomes positively charged and is called a cation. Conversely, when an atom gains electrons, it becomes negatively charged and is called an anion. Therefore, an ion is the correct term to describe an atom that has lost or gained electrons.Rate this question:
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- 4.
A(n) _____________ tells what elements make up a compound and the ratios of the atoms of those elements.
Correct Answer
chemical formulaExplanation
A chemical formula is a representation of a compound that shows the elements present in the compound and the ratio of atoms of those elements. It provides information about the composition of the compound and helps in understanding its structure and properties. By using chemical symbols and subscripts, a chemical formula conveys the type and number of atoms in a compound, allowing scientists to accurately describe and communicate chemical compositions.Rate this question:
- 5.
Which elements are least likely to combine chemically with other elements?
- A.
Metals
- B.
Nonmetals
- C.
Metalloids
- D.
Noble gases
- E.
Transition metals
- F.
Synthetics
Correct Answer
D. Noble gasesExplanation
Noble gases have reached an octet configuration and are more stable as they are than they would be after bonding with any other atoms.Rate this question:
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- 6.
A charged group of atoms that are covalently bonded but act as a single charge particle in an ionic bond is known as a(n) ________________.
Correct Answer
polyatomic ion
polyatomic ionsExplanation
"poly" means many, "atomic" refers to the idea that it is made of atoms, and "ion" means it has a charge. In other words, it is a group of atoms that are bonded together covalently but acts as a single charged atom.Rate this question:
- 7.
A compound that is composed of only two elements is a(n) ____________
Correct Answer
diatomic molecule
diatomic
diatomic compound
binary compoundExplanation
A compound that is composed of only two elements is called a diatomic molecule, diatomic, diatomic compound, or binary compound.Rate this question:
- 8.
What type of bond will form between fluorine and sodium?
- A.
Metallic
- B.
Ionic
- C.
Polar covalent
- D.
Nonpolar covalent
Correct Answer
B. IonicExplanation
Fluorine is a nonmetal and sodium is a metal. Fluorine needs electrons and sodium wants to give electrons up, so it would be an ionic bond.Rate this question:
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- 9.
What type of bond will form between cobalt and iron?
- A.
Metallic
- B.
Ionic
- C.
Polar covalent
- D.
Nonpolar covalent
Correct Answer
A. MetallicExplanation
cobalt and iron are both metals so they would bond metallicallyRate this question:
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- 10.
A positive or negative number that is assigned to an element to show its combining ability in a compound is a(n) ________.
Correct Answer
oxidation number
oxidation numbersExplanation
Oxidation numbers are numbers that are related to the number of valence electrons one needs to gain or lose to have a stable outer shell. Specifically it is the charge on the most common ion that would be formed.Rate this question:
- 11.
How many atoms of oxygen are present in Ba(N?
- A.
3
- B.
2
- C.
4
- D.
6
Correct Answer
D. 6Explanation
Ba(N3)2 contains 2 nitrate ions (N3-) and each nitrate ion contains 3 oxygen atoms. Therefore, there are a total of 2 x 3 = 6 oxygen atoms present in Ba(N3)2.Rate this question:
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- 12.
How many potassium atoms are present in 4 S?
- A.
0
- B.
2
- C.
4
- D.
8
Correct Answer
D. 8Explanation
In this question, the number of potassium atoms is being asked in 4S. The symbol "S" is not commonly used to represent any element, so it is likely a typo or an incomplete question. Without further information, it is not possible to determine the correct answer or provide an explanation.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Jan 02, 2012Quiz Created by
Baigner
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