Chm02 - Organic Chemistry (Lec)
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It is a bonding describes a variety of interactions that hold atoms together in chemical compounds?
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Ionic bonding
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Covalent Bonding
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Chemical Bonding
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Nonpolar Covalent Bonding
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- 2.
Atoms with relatively similar electro negativities _____________ between them and are connected by covalent bonds.
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Pair Electron
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Donate Electron
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Share Electron
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Received Electron
Correct Answer
A. Share ElectronExplanation
Atoms with relatively similar electro negativities share electrons between them and are connected by covalent bonds. Covalent bonds occur when atoms have similar electronegativities and they share electrons in order to achieve a stable electron configuration. This sharing of electrons allows both atoms to fill their outermost electron shells and form a stable molecule.Rate this question:
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- 3.
These are the basin units of matter and the defining structure of elements and came from the Greek word which means “invisible”
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Electron
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Proton
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Neutron
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Atom
Correct Answer
A. AtomExplanation
Atoms are the basic units of matter and the defining structure of elements. The word "atom" originated from the Greek word "atomos" which means "invisible". This is because atoms are so small that they cannot be seen with the naked eye. Atoms are composed of three subatomic particles: protons, neutrons, and electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. Together, these particles make up the atom and determine its properties and behavior.Rate this question:
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- 4.
These are the center of an atom which making up the nucleus.
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Proton and Electron
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Neutron and Electron
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Proton and Neutron
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Ion and neutron
Correct Answer
A. Proton and NeutronExplanation
Protons and neutrons are the two particles that make up the nucleus of an atom. Protons carry a positive charge, while neutrons have no charge. The number of protons determines the element of the atom, while the number of neutrons can vary, creating different isotopes of the same element. Electrons, on the other hand, orbit around the nucleus in energy levels. Therefore, the correct answer is Proton and Neutron, as they are the center of an atom, making up the nucleus.Rate this question:
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- 5.
It is a particle that surrounds the nucleus
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Proton
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Electron
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Neutron
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Ion
Correct Answer
A. NeutronExplanation
The given correct answer is "Neutron." Neutrons are subatomic particles that are found in the nucleus of an atom. They have no charge, unlike protons and electrons which are positively and negatively charged, respectively. Neutrons play a crucial role in determining the stability and mass of an atom. They help to hold the nucleus together by balancing the repulsive forces between positively charged protons. Neutrons also contribute to the overall mass of an atom without significantly affecting its chemical properties.Rate this question:
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- 6.
It is a particle having a positive charge.
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Proton
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Electron
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Neutron
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Ion
Correct Answer
A. ProtonExplanation
A proton is a subatomic particle that carries a positive charge. It is found in the nucleus of an atom, along with neutrons. Protons are essential for determining the atomic number and identity of an element. They are attracted to electrons, which carry a negative charge, and together they form the structure of an atom. Neutrons, on the other hand, are neutral particles and do not carry any charge. Therefore, the correct answer is proton.Rate this question:
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- 7.
It is a particle having a negative charge
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Proton
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Neutron
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Electron
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Ion
Correct Answer
A. ElectronExplanation
An electron is a subatomic particle that carries a negative charge. It is one of the fundamental particles that make up an atom, along with protons and neutrons. Electrons are found in the electron cloud surrounding the nucleus of an atom and play a crucial role in determining the chemical and physical properties of elements. They are involved in chemical bonding and electrical conductivity.Rate this question:
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- 8.
These are the electrons that reside in the outermost shell surrounding an atomic nucleus
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Electronegativity
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Electropositivity
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Valence Electron
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Ionic Charge
Correct Answer
A. Valence ElectronExplanation
Valence electrons are the electrons that are located in the outermost shell of an atom. These electrons play a crucial role in determining the chemical properties of an element, as they are involved in the formation of chemical bonds. Valence electrons are responsible for the reactivity and the ability of an atom to gain, lose, or share electrons with other atoms. Therefore, valence electrons are the electrons that reside in the outermost shell surrounding an atomic nucleus.Rate this question:
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- 9.
When can ionic charge be formed?
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When there is a metal and nonmetal
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When there are two solids
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When there are two nonmetals
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When there are two metals
Correct Answer
A. When there is a metal and nonmetalExplanation
Ionic charge is formed when there is a transfer of electrons between a metal and a nonmetal. In this process, the metal loses electrons to become positively charged (cation), while the nonmetal gains those electrons to become negatively charged (anion). This electrostatic attraction between the oppositely charged ions forms an ionic bond, resulting in the formation of an ionic compound. Therefore, the correct answer is "When there is a metal and nonmetal."Rate this question:
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- 10.
In the process of ionic bonding, nitrogen can be
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Cation
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Anion
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Share electron
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Donate electron
Correct Answer
A. AnionExplanation
In the process of ionic bonding, nitrogen can become an anion. An anion is a negatively charged ion that forms when an atom gains one or more electrons. Nitrogen, with its atomic number of 7, typically forms three covalent bonds to achieve a stable configuration. However, in certain chemical reactions, nitrogen can gain an electron to complete its outer shell and become a nitride ion (N3-), thus becoming an anion.Rate this question:
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- 11.
Lithium has a charge of +1 and Nitrogen has a charge of -3. What would be the name of the compound, in terms of letters AND in terms of chemical symbols? (Note: Subscripts cannot be used, so interpret the numbers in the chemical formulas as subscripts).
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Lithium Nitride and LiN3
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Trilithium Nitrogen and Li3N
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Lithium Nitride and Li3N
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Trilithium Nitride and LiN
Correct Answer
A. Lithium Nitride and Li3NExplanation
The compound formed between lithium and nitrogen is called lithium nitride. In terms of chemical symbols, it is represented as Li3N.Rate this question:
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- 12.
Nickel (II) has a charge of +2. Chlorine has a charge of -1. What is the name of the compound and what is the formula of the compound?
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Nickel (II) Chloride and NiCl2
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Nickel Chloride and NiCl2
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Nickel Chlorine and NiCl
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Nickel (II) Chloride and Ni2Cl
Correct Answer
A. Nickel (II) Chloride and NiCl2Explanation
Nickel (II) Chloride is the correct name for the compound because nickel has a charge of +2 and chlorine has a charge of -1, indicating that two chloride ions are needed to balance the charge of one nickel ion. The formula of the compound is NiCl2, which represents one nickel ion and two chloride ions.Rate this question:
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- 13.
Boron has a charge of +3 and Nitrogen has a charge of -3. What is the chemical compound name and formula?
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Boron Nitrogen and BN
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Uniborn Uninitrogen and BN
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Boron Nitride and B3N3
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Boron Nitride and BN
Correct Answer
A. Boron Nitride and BNExplanation
Boron has a charge of +3 and Nitrogen has a charge of -3. When these two elements combine, they form a compound called Boron Nitride. The chemical formula for Boron Nitride is BN, with one atom of Boron and one atom of Nitrogen.Rate this question:
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- 14.
Mercury (II) (Hg) has a charge of +2. Oxygen (O) has a charge of -2. What is the chemical compound name and formula?
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Mercury (II) Oxide and HgO
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Mercury Oxide and HgO
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Mercury (II) Oxide and Hg2O
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Mercury Oxygen and Hg2O
Correct Answer
A. Mercury (II) Oxide and HgOExplanation
Mercury (II) (Hg) has a charge of +2, and Oxygen (O) has a charge of -2. In order to balance the charges and form a neutral compound, one atom of Mercury (II) combines with one atom of Oxygen. Therefore, the chemical compound name is Mercury (II) Oxide and the formula is HgO.Rate this question:
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- 15.
Why are ionic compounds brittle?
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Because they are solids
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Because when something hits it, a layer of ions is pushed so that they are next to ions of the same charge. They are repulsed by each other and break.
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Because they are not strong bonds
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Because when something hits it, a layer of ions is pushed so that they are next to ions of the same charge. They are attracted to each other and break.
Correct Answer
A. Because when something hits it, a layer of ions is pushed so that they are next to ions of the same charge. They are repulsed by each other and break.Explanation
Ionic compounds are brittle because when they are subjected to external force, such as being hit, a layer of ions is pushed so that they are next to ions of the same charge. Since ions of the same charge repel each other, this repulsion causes the crystal lattice structure of the ionic compound to break, resulting in the compound shattering or fracturing. This is why ionic compounds are known for their brittleness.Rate this question:
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- 16.
Identify what chemical bond will formed in a Na and Cl
Correct Answer
Ionic bondExplanation
When a sodium (Na) atom reacts with a chlorine (Cl) atom, an ionic bond is formed. In this bond, the sodium atom donates an electron to the chlorine atom, resulting in the formation of a positively charged sodium ion (Na+) and a negatively charged chloride ion (Cl-). The opposite charges of these ions attract each other, creating a strong electrostatic force that holds them together in a crystal lattice structure. This type of bond occurs between atoms with significantly different electronegativities, leading to the transfer of electrons from one atom to another.Rate this question:
- 17.
What chemical bond will be form between Mg and Cl
Correct Answer
Ionic bondExplanation
Mg and Cl will form an ionic bond because magnesium (Mg) has a tendency to lose two electrons and chlorine (Cl) has a tendency to gain one electron. This transfer of electrons results in the formation of positively charged Mg ions and negatively charged Cl ions. The opposite charges attract each other, creating a strong electrostatic force that holds the ions together, forming an ionic bond.Rate this question:
- 18.
What chemical bond will form between Mg and O
Correct Answer
Ionic bondExplanation
Mg and O will form an ionic bond because magnesium (Mg) has a tendency to lose two electrons and oxygen (O) has a tendency to gain two electrons. This transfer of electrons results in the formation of ions, with Mg becoming a positively charged ion (Mg2+) and O becoming a negatively charged ion (O2-). The opposite charges attract each other, forming an ionic bond between Mg and O.Rate this question:
- 19.
What chemical bond will be formed between H and O
Correct Answer
Covelent bondExplanation
A covalent bond is formed between hydrogen (H) and oxygen (O) atoms. In a covalent bond, the atoms share electrons to achieve a stable electron configuration. In the case of H and O, the oxygen atom needs two additional electrons to complete its outer shell, while the hydrogen atom needs one additional electron. By sharing electrons, both atoms can achieve a stable configuration, forming a covalent bond between them. This type of bond is characterized by the sharing of electrons rather than the transfer of electrons, as in ionic bonds.Rate this question:
- 20.
What chemical bond will be form between C and N
Correct Answer
Covalent bondExplanation
A covalent bond is formed between carbon (C) and nitrogen (N). In a covalent bond, atoms share electrons to achieve a stable electron configuration. Carbon has four valence electrons, while nitrogen has five. By sharing electrons, both carbon and nitrogen can complete their outermost electron shells and become more stable. This sharing of electrons results in the formation of a covalent bond between the two atoms.Rate this question:
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