Concept #2 Quiz

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Concept #2 Quiz
Choose the best possible answer to the following questions about Key Concept 2 "Basics of minerals: Elements, atoms, and atomic bonds."

This activity contains 10 questions.

All atoms are elements. All atoms of the same element (e.g., oxygen or silicon) have the same number of .

The atomic number and atomic weight of an atom are determined by which of the following, respectively?

number of protons, number of protons plus neutronsnumber of protons plus neutrons, number of protonsnumber of protons, number of protons plus electronsnumber of neutrons, number of protons plus neutrons

The structure of an atom is ________.

a nucleus of protons and neutrons and an electron "cloud"a nucleus of protons and electrons, and a neutron "cloud"isotopeshydrogen

Isotopes of an element differ by ________.

number of neutronsnumber of protonsnumber of neutrons plus electronsnumber of protons plus neutrons

Atoms that are not neutral are called ions. What happens to change an atom into an ion?

Either protons or electrons are lost or gained.Protons are either lost or gained in the atom's nucleus.Neutrons are either lost or gained in the atom's nucleus.Electrons are either lost or gained in the atom's outermost energy shell.

The difference between ionic and covalent bonds is _______.

covalent bonds are when atoms are attracted electrostatically due to positive and negative charges, whereas ionic bonds are when atoms share the same electron(s)ionic bonds are when atoms share the same electron(s), whereas covalent bonds are when atoms are attracted electrostatically due to positive and negative chargesionic bonds are when atoms are attracted electrostatically due to positive and negative charges, whereas covalent bonds are when atoms share the same electron(s)ionic bonds are when atoms are attracted electrostatically due to like charges, whereas covalent bonds are when atoms share the same nucleus

The difference between covalent and metallic bonds is _______.

metallic bonds are when atoms share the same electron(s), but covalent bonds are special types of metallic bonds where an electron is shared among several atoms in sequencecovalent bonds are when atoms are attracted to each other electrostatically, but metallic bonds are special types of covalent bonds where an electron is electrostatically shared among several atoms in sequencemetallic bonds are when atoms are attracted to each other electrostatically, but covalent bonds are special types of metallic bonds where an electron is electrostatically shared among several atoms in sequencecovalent bonds are when atoms share the same electron(s), but metallic bonds are special types of covalent bonds where an electron is shared among several atoms in sequence

According to the Periodic Table of the Elements, the atomic weight of silicon (Si) is listed as 28.0855. If the atomic weight is supposed to be equal to the total number of protons plus neutrons, why isn't this a whole number?

The number of electrons is also included.The number is the average value of all silicon ions.The number is the average value of all silicon isotopes, weighted by abundance.There is an error in the calculation.There are 14.0855 neutrons in a silicon atom.

For an ideal atom, what determines its mass in “atomic mass units” (AMU)? The number of:

protonsneutrons plus electronsprotons plus neutronsprotons plus electrons

What makes the two major atomic bond styles different?

Ionic bonds involve missing and gained electrons, but covalent bonds share electrons between atomsIonic bonds are between positively-charged and negatively-charged atoms, but covalent bonds do not involve charges.Ionic bonds are “attractive” (electrical), but covalent bonds are “sharing” electrons.All of these.

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