Quiz review

What is the purpose of Lewis dot structures?

• To represent the valence electrons of an atom or molecule.

• To represent the core electrons of an atom or molecule.

• To determine the atomic number of an atom or molecule.

• To show the isotopes of an atom or molecule.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the electron configuration of oxygen?

• 1s2 2s2 2p6

• 1s2 2s2 2p3

• 1s2 2s2 2p2

• 1s2 2s2 2p4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is an ion?

• An ion is an atom or molecule that has gained or lost one or more electrons, giving it a positive or negative charge.

• An ion is a type of subatomic particle.

• An ion is a form of radiation.

• An ion is a type of chemical bond.

How is the periodic table classified?

• Based on atomic number, electron configuration, and recurring chemical properties.

• Based on atomic number, electron arrangement, and recurring chemical properties.

• Based on atomic mass, electron configuration, and recurring chemical properties.

• Based on atomic weight, electron configuration, and recurring chemical properties.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the difference between covalent and ionic bonding?

• Covalent bonding involves sharing electrons, while ionic bonding involves transferring electrons.

• Covalent bonding occurs between metals and nonmetals, while ionic bonding occurs between two nonmetals.

• Covalent bonding involves the attraction between oppositely charged ions, while ionic bonding involves the sharing of electrons.

• Covalent bonding involves transferring electrons, while ionic bonding involves sharing electrons.

What is the Lewis dot structure for carbon dioxide (CO2)?

• O=C-O

• O=C-OH

• O-C-O

• O=C=O

Tags

NGSS.HS-PS1-2

What is the electron configuration of nitrogen?

• 1s2 2s2 2p3

• 1s2 2s2 2p5

• 1s2 2s2 2p2

• 1s2 2s2 2p4

Tags

NGSS.HS-PS1-1

What is a polar bond?

• A polar bond is a type of chemical bond where electrons are equally shared between two atoms.

• A polar bond is a type of chemical bond where a pair of electrons is unequally shared between two atoms.

• A polar bond is a type of chemical bond where atoms are not involved.

• A polar bond is a type of chemical bond where electrons are not shared between two atoms.

What is the classification of the element with atomic number 20?

• Transition Metal

• Halogen

• Noble Gas

• Alkaline Earth Metal

Tags

NGSS.HS-PS1-1

What is the difference between polar and non-polar bonding?

• Polar bonding involves equal sharing of electrons between atoms with similar electronegativities, while non-polar bonding involves unequal sharing of electrons between atoms with different electronegativities.

• Polar bonding involves sharing of protons between atoms with different electronegativities, while non-polar bonding involves sharing of electrons between atoms with similar electronegativities.

• Polar bonding involves unequal sharing of electrons between atoms with different electronegativities, while non-polar bonding involves equal sharing of electrons between atoms with similar electronegativities.

• Polar bonding involves sharing of electrons between atoms with similar electronegativities, while non-polar bonding involves sharing of protons between atoms with different electronegativities.