Elements, Atoms, Bonding And The Periodic Table Flash Quiz
On-Line Text Flash Quiz: Elements, Atoms, Bonding and the Periodic Table
- 1.
What is matter?
- A.
Anything that has mass and occupies space.
- B.
Anything that has density and occupies space.
- C.
Anything that has volume and takes up space.
- D.
Anything that has electrons and takes up space.
Correct Answer
A. Anything that has mass and occupies space.Explanation
The correct answer is "Anything that has mass and occupies space." This definition accurately describes matter, as it encompasses both the concept of mass (which refers to the amount of matter in an object) and the idea that matter takes up physical space. This definition is widely accepted in the scientific community and is consistent with our understanding of matter.Rate this question:
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- 2.
What is the difference between a compound and a mixture?
- A.
A compound is a pure substance made up of two or more elements that are combined chemically in a specific ratio. A mixture is two or more substances that are in the same place and are not chemically combined.
- B.
A mixture is a pure substance made up of two or more elements that are combined chemically in a specific ratio. A compound is two or more substances that are in the same place and are not chemically combined.
- C.
A compound is a mixture made up of two or more elements that are chemically combined. A mixture is a combination of two or more substances that occupy the same place.
- D.
A compound is set of element that are blended but not chemically combined. A mixture is made up of emulsifiers.
Correct Answer
A. A compound is a pure substance made up of two or more elements that are combined chemically in a specific ratio. A mixture is two or more substances that are in the same place and are not chemically combined.Explanation
A compound is a pure substance made up of two or more elements that are combined chemically in a specific ratio. This means that the elements in a compound are bonded together in a specific way, forming a new substance with unique properties. On the other hand, a mixture is two or more substances that are in the same place but are not chemically combined. In a mixture, the substances retain their individual properties and can be separated by physical means.Rate this question:
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- 3.
A compound is different from an element because a compound is:
- A.
Made of two or more elements chemically combined.
- B.
The building block of all matter.
- C.
A mixture of elements.
- D.
A pure substance.
Correct Answer
A. Made of two or more elements chemically combined.Explanation
A compound is made of two or more elements chemically combined. This means that the atoms of different elements in a compound are bonded together in a specific ratio and arrangement. This chemical combination results in a substance with different properties than the individual elements. In contrast, an element is a pure substance made up of only one type of atom. Therefore, the correct answer is that a compound is made of two or more elements chemically combined.Rate this question:
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- 4.
What is an energy level?
- A.
A region of an atom in which electrons of the same energy are likely to be found.
- B.
A region of an element in which electrons of the same energy are likely to be found.
- C.
The nucleus of an atom in which the same energy level as electrons are found.
- D.
The region of an atom in which protons and electrons of the same energy level are likely to be found.
Correct Answer
A. A region of an atom in which electrons of the same energy are likely to be found.Explanation
An energy level refers to a specific region within an atom where electrons with the same energy are likely to be found. This concept is based on the understanding that electrons exist in discrete energy states or levels within an atom. Each energy level can accommodate a specific number of electrons, and electrons within the same energy level have similar energy values. The arrangement of electrons in different energy levels determines the chemical and physical properties of an atom.Rate this question:
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- 5.
What is a chemical bond?
- A.
A chemical bond is the force that holds atoms together.
- B.
A chemical bond is the nucleus energy level that holds atoms together.
- C.
A chemical bond is the exchange of valence electrons.
- D.
A chemical bond is the pairing and sharing of electrons.
Correct Answer
A. A chemical bond is the force that holds atoms together.Explanation
A chemical bond refers to the force that holds atoms together. This force is formed when electrons are shared, paired, or exchanged between atoms. It is this bond that allows atoms to form molecules and compounds. The other options mentioned in the question, such as the nucleus energy level or the exchange of valence electrons, are not complete definitions of a chemical bond.Rate this question:
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- 6.
An electron dot diagram shows the chemical symbol and the_______
- A.
An electron dot diagram shows the number of valence electrons in an atom.
- B.
An electron dot diagram shows the total number of electrons in an atom.
- C.
An electron dot diagram shows the energy levels of the electrons in an atom.
- D.
An electron dot diagram shows the bonding electrons in an atom.
Correct Answer
A. An electron dot diagram shows the number of valence electrons in an atom.Explanation
An electron dot diagram is a representation of an atom's valence electrons, which are the electrons in the outermost energy level of the atom. It is a way to visually depict the arrangement of these valence electrons around the atomic symbol. By showing the number of valence electrons, the electron dot diagram provides information about how atoms can bond with each other to form molecules.Rate this question:
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- 7.
What is an atom's atomic number?
- A.
An atom's atomic number is the number of protons in the nucleus of an atom.
- B.
An atom's atomic number is the number of the protons and neutrons of the atom.
- C.
An atom's atomic number is the number of valence electrons.
- D.
An atom's atomic number is the atom's electronegativity.
Correct Answer
A. An atom's atomic number is the number of protons in the nucleus of an atom.Explanation
The atomic number of an atom refers to the number of protons in its nucleus. Protons are positively charged particles and are one of the fundamental building blocks of an atom. The atomic number determines the identity of an element, as each element has a unique number of protons. The number of protons also determines the overall charge of the atom, as it balances out the negative charge of the electrons. Therefore, the correct answer is that an atom's atomic number is the number of protons in its nucleus.Rate this question:
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- 8.
In the Periodic Table, when does a period end?
- A.
A period ends when the highest energy level has eight electrons.
- B.
A period ends when the most active energy level bonds.
- C.
A period ends when the valence electrons are traded.
- D.
A period ends when the first energy level has two electrons.
Correct Answer
A. A period ends when the highest energy level has eight electrons.Explanation
A period in the Periodic Table ends when the highest energy level has eight electrons. This is because the highest energy level, also known as the valence shell, is the outermost shell of an atom and determines its chemical properties. When this energy level is filled with eight electrons, the atom is considered stable and does not readily form chemical bonds. Therefore, the completion of the valence shell signifies the end of a period in the Periodic Table.Rate this question:
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- 9.
The noble gases have eight valence electrons. Therefore_____
- A.
Noble gases do not react easily with other elements.
- B.
Noble gases easily react with other elements.
- C.
Nobel gases seek to covalently bond with other elements.
- D.
Nobel gases seek to ionically bond with other elements.
Correct Answer
A. Noble gases do not react easily with other elements.Explanation
The noble gases have eight valence electrons, which means they have a full outer electron shell. This stable electron configuration makes them highly unreactive and unlikely to form chemical bonds with other elements. Therefore, noble gases do not react easily with other elements.Rate this question:
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- 10.
Even though it is not a metal, hydrogen is grouped above the alkali metals because_____
- A.
Hydrogen is grouped above the alkali metals because it also has one valence electron.
- B.
Hydrogen is grouped above the alkali metals because its physical properties resemble those of the alkali metals.
- C.
Hydrogen is grouped above the alkali metals because its chemical properties are like those of the alkali metals.
- D.
Hydrogen is grouped above the alkali metals because it does not behave like a nonmetal.
Correct Answer
A. Hydrogen is grouped above the alkali metals because it also has one valence electron.Explanation
Hydrogen is grouped above the alkali metals because it also has one valence electron. This is significant because the alkali metals, such as lithium and sodium, also have one valence electron. Valence electrons play a crucial role in determining an element's chemical behavior and reactivity. By having one valence electron, hydrogen shares a similarity with the alkali metals, which justifies its placement above them in the periodic table.Rate this question:
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- 11.
Elements in the same column of the Periodic Table are called ___________
- A.
Elements in the same vertical column of the periodic table are called a family.
- B.
Elements in the same vertical column of the periodic table are called a community.
- C.
Elements in the same vertical column of the periodic table are called halogens.
- D.
Elements in the same vertical column of the periodic table are called a period.
Correct Answer
A. Elements in the same vertical column of the periodic table are called a family.Explanation
Elements in the same vertical column of the periodic table are called a family because they share similar chemical properties and have the same number of valence electrons. This allows them to have similar reactivity and form similar types of compounds. The elements in a family also tend to have similar physical properties, such as melting and boiling points, atomic radius, and electronegativity. The vertical columns in the periodic table are known as groups or families, and each family is named based on the element at the top of the column.Rate this question:
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- 12.
Which of these is a list of mixtures?
- A.
This is a list of mixtures: Air, soil, wood, gasoline, concrete and orange juice.
- B.
This is a list of mixtures: Air, soil, saltwater, wood, gasoline, concrete and orange juice.
- C.
This is a list of mixtures: Air, soil, water, wood, gasoline, concrete and orange juice.
- D.
This is a list of mixtures: Air, soil, wood, gasoline, H2, O2,
Correct Answer
A. This is a list of mixtures: Air, soil, wood, gasoline, concrete and orange juice.Explanation
The correct answer is option 2: "This is a list of mixtures: Air, soil, saltwater, wood, gasoline, concrete and orange juice." This is because all the items listed are combinations of two or more substances that are physically mixed together, without any chemical reaction taking place. Air is a mixture of gases, soil is a mixture of minerals, saltwater is a mixture of salt and water, wood is a mixture of cellulose and other compounds, gasoline is a mixture of hydrocarbons, concrete is a mixture of cement, sand, and gravel, and orange juice is a mixture of water and orange juice concentrate.Rate this question:
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Mar 20, 2023Quiz Edited by
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Nov 13, 2014Quiz Created by
Rhaveno
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