Atomic Theory And Pt Assessment Mcfadden Pd4 2015
(12).webp "Atomic Theory And Pt Assessment Mcfadden Pd4 2015 - Quiz")
Atomic Theory & Periodic Table Assessment Bank
Questions and Answers
- 1.
Electrons are found in the ________.
- A.
Nucleus
- B.
Electron Cloud
- C.
Atom
Correct Answer
B. Electron CloudExplanation
Electrons are found in the electron cloud, which is a region surrounding the nucleus of an atom. The electron cloud is where electrons are most likely to be found and it consists of different energy levels or orbitals. These orbitals can hold a specific number of electrons, and the arrangement of electrons in the electron cloud determines the chemical properties of an atom. Therefore, the electron cloud is where the majority of the electrons in an atom are located.Rate this question:
-
- 2.
You can identify the number of valence electrons in an atom of an element from the ______
- A.
Atomic Number
- B.
Period Number
- C.
Group Number
- D.
Atomic Mass Number
Correct Answer
C. Group NumberExplanation
The number of valence electrons in an atom of an element can be identified from the Group Number. The Group Number represents the number of valence electrons in the outermost energy level of an atom. Each group on the periodic table corresponds to a specific number of valence electrons. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on. Therefore, the Group Number provides information about the number of valence electrons in an atom of an element.Rate this question:
-
- 3.
You can identify the number of neutrons in an atom of an element from the ______
- A.
Atomic Number - Rounded Atomic Mass
- B.
Atomic Number - Atomic Number
- C.
Rounded Atomic Mass/Atomic Number
- D.
Rounded Atomic Mass - Atomic Number
Correct Answer
D. Rounded Atomic Mass - Atomic NumberExplanation
The number of neutrons in an atom of an element can be identified by subtracting the atomic number (number of protons) from the rounded atomic mass (number of protons and neutrons combined).Rate this question:
-
- 4.
The charge of a proton is _______
- A.
Negative
- B.
Positive
- C.
Neutral
Correct Answer
B. PositiveExplanation
The charge of a proton is positive. Protons are subatomic particles found in the nucleus of an atom and are assigned a charge of +1. This positive charge is equal in magnitude but opposite in sign to the negative charge of an electron. The charge of a proton is fundamental to the structure of matter and plays a crucial role in determining the behavior and interactions of atoms and molecules.Rate this question:
-
- 5.
The charge of a electron is _______
- A.
Negative
- B.
Positive
- C.
Neutral
Correct Answer
A. NegativeExplanation
The charge of an electron is negative. This is because electrons are negatively charged particles that orbit around the nucleus of an atom. The charge of an electron is equal in magnitude but opposite in sign to the charge of a proton, which is positive. This negative charge allows electrons to be attracted to positively charged particles and repelled by other negatively charged particles.Rate this question:
-
- 6.
The charge of a neutron is _______
- A.
Negative
- B.
Positive
- C.
Neutral
Correct Answer
C. NeutralExplanation
The charge of a neutron is neutral because it does not have a positive or negative charge. Neutrons are subatomic particles found in the nucleus of an atom and they have no net electric charge. Unlike protons, which have a positive charge, and electrons, which have a negative charge, neutrons do not interact with electric fields and do not contribute to the overall charge of an atom.Rate this question:
-
- 7.
Group 18 is also known as the ________.
- A.
Alkali Metals
- B.
Alkaline Earth Metals
- C.
Transition Metals
- D.
Mixed Groups
- E.
Halogens
- F.
Noble Gases
Correct Answer
F. Noble GasesExplanation
Group 18 is known as the Noble Gases because it consists of elements that are highly stable and have a full outer electron shell. These elements include helium, neon, argon, krypton, xenon, and radon. Noble gases are characterized by their low reactivity and are often used in lighting, lasers, and other applications where a stable and non-reactive element is required.Rate this question:
-
- 8.
Group 2 is also known as the ________.
- A.
Alkali Metals
- B.
Alkaline Earth Metals
- C.
Transition Metals
- D.
Mixed Groups
- E.
Halogens
- F.
Noble Gases
Correct Answer
B. Alkaline Earth MetalsExplanation
Group 2 elements in the periodic table are known as alkaline earth metals. These elements include beryllium, magnesium, calcium, strontium, barium, and radium. They are called alkaline earth metals because they have similar properties to the elements in Group 1 (alkali metals), but their oxides and hydroxides are less soluble in water and have a more alkaline pH. Alkaline earth metals are shiny, silvery-white, and relatively soft metals that are reactive and easily form compounds. They are commonly found in minerals and are important for various biological processes.Rate this question:
-
- 9.
Group 1 is also known as the ________.
- A.
Alkali Metals
- B.
Alkaline Earth Metals
- C.
Transition Metals
- D.
Mixed Groups
- E.
Halogens
- F.
Noble Gases
Correct Answer
A. Alkali MetalsExplanation
Group 1 elements in the periodic table are known as alkali metals. These elements include lithium, sodium, potassium, rubidium, cesium, and francium. Alkali metals are highly reactive and have only one valence electron, which makes them very eager to lose that electron and form positive ions. They are soft, shiny, and have low melting and boiling points. Alkali metals are commonly found in compounds rather than in their pure form in nature.Rate this question:
-
- 10.
Group 3-12 is also known as the ________.
- A.
Alkali Metals
- B.
Alkaline Earth Metals
- C.
Transition Metals
- D.
Mixed Groups
- E.
Halogens
- F.
Noble Gases
Correct Answer
C. Transition MetalsExplanation
Group 3-12 is known as the Transition Metals because these elements have properties that are in between those of the alkali metals and the alkaline earth metals. They are characterized by their ability to form multiple oxidation states and their tendency to form complex compounds. Transition metals are also known for their high melting and boiling points, as well as their good conductivity of heat and electricity. They are commonly used in various industrial applications, such as in the production of steel, alloys, and catalysts.Rate this question:
-
- 11.
Group 17 is also known as the ________.
- A.
Alkali Metals
- B.
Alkaline Earth Metals
- C.
Transition Metals
- D.
Mixed Groups
- E.
Halogens
- F.
Noble Gases
Correct Answer
E. HalogensExplanation
Group 17 is also known as the Halogens. The elements in this group include fluorine, chlorine, bromine, iodine, and astatine. These elements have seven valence electrons and are highly reactive nonmetals. They readily form compounds with other elements, especially alkali metals, to achieve a stable electron configuration. Halogens are known for their distinct colors, strong odor, and corrosive properties. They are commonly used in disinfectants, bleaches, and as a source of iodine in medicine.Rate this question:
-
- 12.
Group 13-16 is also known as the ________.
- A.
Alkali Metals
- B.
Alkaline Earth Metals
- C.
Transition Metals
- D.
Mixed Groups
- E.
Halogens
- F.
Noble Gases
Correct Answer
D. Mixed GroupsExplanation
Group 13-16 is also known as the Mixed Groups because it consists of elements from different categories on the periodic table. These groups include elements from the p-block and d-block, which have varying properties and characteristics. The elements in these groups have a wide range of chemical behaviors and are not classified under a specific category like the alkali metals, alkaline earth metals, transition metals, halogens, or noble gases.Rate this question:
-
- 13.
Calcium has an atomic mass of 40 and an atomic number of 20. How many neutrons are there in one atom of calcium?
- A.
50
- B.
35
- C.
20
- D.
25
Correct Answer
C. 20Explanation
The atomic number of an element represents the number of protons in its nucleus. Since the atomic number of calcium is 20, it means that there are 20 protons in one atom of calcium. The atomic mass of an element represents the sum of the protons and neutrons in its nucleus. Therefore, since the atomic mass of calcium is 40, and there are 20 protons, it can be deduced that there are 20 neutrons in one atom of calcium.Rate this question:
-
- 14.
The atomic number of an element tells you the number of ____.
- A.
Electrons
- B.
Neutrons & Electrons
- C.
Protons, Electrons & Neutrons
- D.
Protons & Electrons
Correct Answer
D. Protons & ElectronsExplanation
The atomic number of an element represents the number of protons in the nucleus of an atom. Since protons carry a positive charge and electrons carry a negative charge, an atom is electrically neutral when the number of protons equals the number of electrons. Therefore, the atomic number also indicates the number of electrons in an atom. Neutrons, on the other hand, do not have a charge and their number can vary in different isotopes of an element.Rate this question:
-
- 15.
How many electrons are in the outer most orbital of Selenium?
- A.
8
- B.
3
- C.
7
- D.
6
Correct Answer
D. 6Explanation
Selenium has an atomic number of 34, which means it has 34 electrons. The electron configuration of selenium is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4. The outermost orbital of selenium is the 4th energy level, specifically the 4p orbital. In the 4p orbital, there are a total of 6 electrons. Therefore, the correct answer is 6.Rate this question:
-
- 16.
If an element can be drawn into thin wire, it is called ____.
- A.
Weak
- B.
Malleable
- C.
Flexible
- D.
Ductile
Correct Answer
D. DuctileExplanation
Ductile is the correct answer because if an element can be drawn into thin wire, it means it can be stretched and deformed without breaking. This property is known as ductility. Weak refers to a lack of strength, malleable refers to the ability to be hammered or pressed into shape, and flexible refers to the ability to bend easily without breaking. However, only ductile specifically describes the property of being able to be drawn into thin wire.Rate this question:
-
- 17.
Vertical Columns on the periodic table are called ____.
- A.
Rows
- B.
Period
- C.
Groups
- D.
Elements
Correct Answer
C. GroupsExplanation
Vertical columns on the periodic table are called "groups". These groups represent elements that have similar chemical properties and share the same number of valence electrons. The elements within a group have similar reactivity and tend to form similar types of compounds. The groups are numbered from 1 to 18, with each group having a specific name or designation.Rate this question:
-
- 18.
What is needed to determine the atomic mass of an atom?
- A.
Atomic Number and the Number of Electrons
- B.
Atomic Mass and the Atomic Number
- C.
The number of protons and the number of neutrons
- D.
The number of protons and the number of electrons
Correct Answer
C. The number of protons and the number of neutronsExplanation
To determine the atomic mass of an atom, you need to know the number of protons and the number of neutrons. The atomic mass is the sum of the masses of these two subatomic particles. The number of protons determines the atomic number, while the number of neutrons contributes to the mass number. Therefore, both of these factors are necessary to calculate the atomic mass accurately.Rate this question:
-
- 19.
Most of the elements on the periodic table are ____.
- A.
Noble Gases
- B.
Metals
- C.
Nonmetals
- D.
Metalloids
Correct Answer
B. MetalsExplanation
Most of the elements on the periodic table are metals. Metals are characterized by their ability to conduct heat and electricity, their shiny appearance, and their malleability and ductility. They are found on the left side and in the middle of the periodic table. Nonmetals, on the other hand, are found on the right side of the periodic table and have properties opposite to metals. Metalloids are elements that have properties intermediate between metals and nonmetals and are found along the zigzag line on the periodic table. Noble gases, such as helium and neon, are a group of elements that are characterized by their low reactivity and full outer electron shells.Rate this question:
-
- 20.
Most elements on the periodic table are ____.
- A.
Liquid
- B.
Solid
- C.
Inert
- D.
Metalloids
Correct Answer
B. SolidExplanation
The correct answer is "Solid" because most elements on the periodic table exist in the solid state at room temperature and pressure. This is due to the strong intermolecular forces between the atoms or molecules of these elements, which keep them tightly packed together in a solid form. While there are some exceptions, such as mercury, which is a liquid at room temperature, and a few elements that are gases, the majority of elements are found in the solid state.Rate this question:
-
- 21.
Which of the following is NOT a characteristic of copper?
- A.
Malleable
- B.
Ductile
- C.
Brittle
- D.
Good conductor of heat and electricity
Correct Answer
C. BrittleExplanation
Copper is known for its malleability and ductility, which means it can be easily hammered into thin sheets and drawn into wires. It is also a good conductor of heat and electricity. However, it is not brittle, meaning it does not easily break or shatter when subjected to stress.Rate this question:
-
- 22.
Which of the following is a nonmetal and a liquid?
- A.
Mercury
- B.
Bromine
- C.
Gallium
- D.
Hydrogen
Correct Answer
B. BromineExplanation
Bromine is a nonmetal and a liquid at room temperature. It is the only element among the options that meets both criteria. Mercury is a liquid but it is a metal. Gallium is a metal and a solid at room temperature. Hydrogen is a nonmetal but it is a gas at room temperature. Therefore, the correct answer is Bromine.Rate this question:
-
- 23.
Which of the following is NOT a solid?
- A.
Calcium
- B.
Phosphorus
- C.
Nitrogen
- D.
Potassium
Correct Answer
C. NitrogenExplanation
Nitrogen is not a solid because it exists as a gas at room temperature and atmospheric pressure. It is a diatomic molecule, meaning it consists of two nitrogen atoms bonded together. Nitrogen is essential for many biological processes and is a major component of the Earth's atmosphere. However, it does not have a solid state under normal conditions.Rate this question:
-
- 24.
How many elements are in Period 3?
- A.
2
- B.
8
- C.
18
- D.
11
Correct Answer
B. 8Explanation
Period 3 in the periodic table consists of 8 elements. This is because each period in the periodic table corresponds to the number of energy levels or shells that an atom's electrons occupy. In Period 3, the atoms have electrons filling up to the third energy level. The number of elements in each period increases as you move across the periodic table because each subsequent element adds one more electron to the energy level. Therefore, the correct answer is 8.Rate this question:
-
- 25.
Since He has an atomic number of 2, it is known as a ______.
- A.
Alkaline Earth Metal
- B.
Noble Gases
- C.
Chalcogen
- D.
Alkali Metal
Correct Answer
B. Noble GasesExplanation
The statement mentions that "He" has an atomic number of 2. The atomic number refers to the number of protons in an atom's nucleus. Based on this information, "He" refers to the element Helium, which indeed has an atomic number of 2. Helium is classified as a Noble Gas, which is a group of elements that are known for their low reactivity and full valence electron shells. Therefore, the correct answer is Noble Gases.Rate this question:
-
- 26.
The above element is a member of the _______ group/family.
- A.
Alkaline Earth Metals
- B.
Transition Metals
- C.
Noble Gases
- D.
Halogens
Correct Answer
C. Noble GasesExplanation
The given element belongs to the Noble Gases group/family. Noble Gases are a group of chemical elements that are characterized by their low reactivity and full outer electron shells. They are located in Group 18 of the periodic table and include elements such as helium, neon, argon, krypton, xenon, and radon. These gases have stable electron configurations and rarely form compounds with other elements.Rate this question:
-
- 27.
The above element belongs to period _____.
- A.
1
- B.
2
- C.
4
- D.
3
Correct Answer
A. 1Explanation
The above element belongs to period 1.Rate this question:
-
- 28.
The above model is an example of ___________ theory of the atom.
- A.
Dalton's
- B.
Thompson's
- C.
Rutherford's
- D.
Bohr's
Correct Answer
B. Thompson'sExplanation
The above model is an example of Thompson's theory of the atom. This is because J.J. Thompson proposed the "plum pudding" model of the atom, which suggested that atoms were made up of a positively charged "pudding" with negatively charged electrons embedded within it. This model was later disproven by Rutherford's gold foil experiment, which led to the development of the modern atomic theory.Rate this question:
-
- 29.
Based on the above diagram, what is the element?
- A.
Strontium
- B.
Barium
- C.
Oxygen
- D.
Sulfur
Correct Answer
C. OxygenExplanation
The correct answer is Oxygen because it is the only element represented by the symbol "O" in the periodic table. The diagram does not provide any additional information to suggest any other element.Rate this question:
-
- 30.
Protons are found in the ________.
- A.
Nucleus
- B.
Electron Cloud
- C.
Atom
- D.
Electron Energy Levels
Correct Answer
A. NucleusExplanation
Protons are positively charged subatomic particles that are found in the nucleus of an atom. The nucleus is the central part of an atom that contains protons and neutrons, while the electron cloud surrounds the nucleus and contains negatively charged electrons. The atom as a whole consists of both the nucleus and the electron cloud, but specifically, protons are located in the nucleus.Rate this question:
-
- 31.
Neutrons are found in the ________.
- A.
Nucleus
- B.
Electron Cloud
- C.
Atom
- D.
Electron Energy Levels
Correct Answer
A. NucleusExplanation
Neutrons are found in the nucleus of an atom. The nucleus is the central part of an atom that contains protons and neutrons, while the electron cloud surrounds the nucleus. Neutrons are neutral particles that have a mass similar to protons but no electric charge. They play a crucial role in determining the stability and properties of an atom.Rate this question:
-
- 32.
Valence electrons are found in the _____.
- A.
Innermost level of Eeectrons
- B.
Outermost level of electrons
- C.
Middle Levels of Electrons
Correct Answer
B. Outermost level of electronsExplanation
Valence electrons are found in the outermost level of electrons. These are the electrons that are involved in chemical bonding and determine the reactivity and chemical properties of an atom. The outermost level, also known as the valence shell, is the highest energy level of an atom and can hold a maximum of 8 electrons. Valence electrons play a crucial role in the formation of chemical bonds and the stability of atoms.Rate this question:
-
- 33.
You can identify the number of energy levels or orbitals in an atom of an element from the ______
- A.
Atomic Number
- B.
Period Number
- C.
Group Number
- D.
Atomic Mass Number
Correct Answer
B. Period NumberExplanation
The number of energy levels or orbitals in an atom of an element can be identified from the period number. The period number represents the energy level of the outermost electrons in an atom. Each period corresponds to a specific energy level, with the first period having one energy level, the second period having two energy levels, and so on. Therefore, by knowing the period number of an element, one can determine the number of energy levels or orbitals in its atom.Rate this question:
-
- 34.
Which group contains elements found in all three states of matter?
- A.
Boron Group
- B.
Noble Gases
- C.
Transition Metals
- D.
Halogens
Correct Answer
D. HalogensExplanation
The halogens group contains elements found in all three states of matter. This is because the halogens consist of elements such as fluorine, chlorine, bromine, iodine, and astatine, which can exist as gases, liquids, and solids under normal conditions. Fluorine and chlorine are gases, bromine is a liquid, and iodine and astatine are solids. Therefore, the halogens group is the correct answer.Rate this question:
-
- 35.
The scientist who discovered that atoms contain negatively charged particles that became know as electrons.
- A.
J.J. Thomson
- B.
Democritus
- C.
Niels Bohr
- D.
John Dalton
Correct Answer
A. J.J. ThomsonExplanation
J.J. Thomson is the correct answer because he was the scientist who discovered that atoms contain negatively charged particles known as electrons. He conducted experiments with cathode rays and proposed the "plum pudding" model of the atom, which suggested that electrons were embedded in a positively charged sphere. This discovery revolutionized our understanding of atomic structure and laid the foundation for further advancements in the field of physics.Rate this question:
-
- 36.
Since Bohr, we now know that electrons travel in what are now called _____.
- A.
Energy Levels
- B.
Tracks
- C.
Pathways
- D.
Raceways
Correct Answer
A. Energy LevelsExplanation
After Bohr's atomic model, it was discovered that electrons in an atom occupy specific energy levels, also known as shells or orbitals, which are quantized. These energy levels determine the amount of energy an electron possesses and its distance from the nucleus. The term "tracks" or "pathways" does not accurately describe the concept of energy levels in atomic structure. "Raceways" is not a scientifically recognized term in relation to electron movement.Rate this question:
-
- 37.
The scientist that said most of the mass of the atom is in the center of the atom called the nucleus and the rest of the atom is simply empty space was _____.
- A.
Niels Bohr
- B.
Democratis
- C.
Ernest Rutherford
- D.
J.J. Thompson
Correct Answer
C. Ernest RutherfordExplanation
Ernest Rutherford is the correct answer because he conducted the famous gold foil experiment in which he discovered that most of the mass of the atom is concentrated in a small, dense region called the nucleus. He proposed the nuclear model of the atom, which stated that the rest of the atom is mostly empty space with electrons orbiting around the nucleus. This experiment provided evidence for the existence of the nucleus and revolutionized our understanding of atomic structure.Rate this question:
-
- Chemical Bonding Quizzes
- Chemistry Practice Quizzes
- Electrolysis Quizzes
- Functional Group Quizzes
- Gas Quizzes
- General Chemistry Quizzes
- IBSL Chemistry Quizzes
- Medicinal Chemistry Quizzes
- Molecule Quizzes
- Periodic Table Quizzes
- Rate Of Reaction Quizzes
- Reaction Quizzes
- Soap Quizzes
- Solution And Mixture Quizzes
- State Of Matter Quizzes
- Stoichiometry Quizzes
Back to top