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Questions and Answers
Which of the following is a substance formed when two or more elements chemically combine in fixed ratios?
Which of the following is a substance formed when two or more elements chemically combine in fixed ratios?
- Isotope
- Compound (correct)
- Ion
- Atom
What is the basic unit of a chemical element?
What is the basic unit of a chemical element?
- Molecule
- Isotope
- Atom (correct)
- Ion
Which type of ion is formed when an atom gains one or more electrons?
Which type of ion is formed when an atom gains one or more electrons?
- Molecule
- Isotope
- Cation
- Anion (correct)
What are variants of a chemical element that have the same number of protons but a different number of neutrons in their nuclei?
What are variants of a chemical element that have the same number of protons but a different number of neutrons in their nuclei?
What is a positively charged ion formed when an atom loses one or more electrons?
What is a positively charged ion formed when an atom loses one or more electrons?
Which particle is formed when an atom gains or loses electrons?
Which particle is formed when an atom gains or loses electrons?
What is the charge of a proton?
What is the charge of a proton?
Where are electrons located in an atom?
Where are electrons located in an atom?
What determines the element to which an atom belongs?
What determines the element to which an atom belongs?
What is a covalent bond?
What is a covalent bond?
What is the mass of a neutron?
What is the mass of a neutron?
Which of the following compounds has covalent bonds?
Which of the following compounds has covalent bonds?
Where are protons located in an atom?
Where are protons located in an atom?
What is the charge of an electron?
What is the charge of an electron?
Which subatomic particle contributes most to an atom's mass?
Which subatomic particle contributes most to an atom's mass?
What allows each atom to attain a more stable electron configuration in a covalent bond?
What allows each atom to attain a more stable electron configuration in a covalent bond?
Which of the following accurately describes the formation of a compound?
Which of the following accurately describes the formation of a compound?
What is the primary factor leading to variations in atomic mass among isotopes of the same element?
What is the primary factor leading to variations in atomic mass among isotopes of the same element?
When an atom gains electrons, it becomes:
When an atom gains electrons, it becomes:
What type of ion is attracted to negatively charged ions and often involved in ionic bonds?
What type of ion is attracted to negatively charged ions and often involved in ionic bonds?
What is the basic unit of a chemical element?
What is the basic unit of a chemical element?
In an ionic bond, what contributes to the formation of positively and negatively charged ions?
In an ionic bond, what contributes to the formation of positively and negatively charged ions?
What is the primary location of electrons in an atom?
What is the primary location of electrons in an atom?
What determines the element to which an atom belongs?
What determines the element to which an atom belongs?
Which type of chemical bond involves the sharing of electron pairs between atoms?
Which type of chemical bond involves the sharing of electron pairs between atoms?
Where are neutrons located in an atom?
Where are neutrons located in an atom?
Which particle contributes most to an atom's mass?
Which particle contributes most to an atom's mass?
Which of the following compounds contains covalent bonds?
Which of the following compounds contains covalent bonds?
What is the charge of an electron?
What is the charge of an electron?
What is the mass of a neutron?
What is the mass of a neutron?
What allows each atom to attain a more stable electron configuration in a covalent bond?
What allows each atom to attain a more stable electron configuration in a covalent bond?
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