AP Chemistry Lewis Structures Polar Nonpolar

In order to help us make a little more sense of the chemical world, humans naturally tend to ___

• jumble and scatter

• classify and categorize

• shimmy and shake

• combine and conquer

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Water, H₂O, is classified as what type of molecule?

• a polar molecule

• a nonpolar molecule

• a coordinate covalent compound

• an ionic compound

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NGSS.HS-ESS2-5

The various chemicals that make up butter are generally ___

• polar

• nonpolar

• soluble in water

• ionic compounds

A molecule made up entirely of the same element will have an electron distribution that is ___

• completely symmetrical

• asymmetrical

• decreasing from left to right

• polar

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NGSS.HS-PS1-1

What is the measure of the tendency of an atom to attract bonding electrons called?

• ionization energy

• electron charisma

• dipole momentum

• electronegativity

Electronegativity increases from left to right on the periodic table because there are ___

• fewer protons in the atoms

• more protons in the atoms

• fewer electron shells

• more electron shells

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NGSS.HS-PS1-1

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Electronegativity decreases as you move from top to bottom on the periodic table because ___

• the increased electrons shield each other from the protons

• there are more protons in the atoms

• there are fewer electron shells

• of the asymmetrical electron distribution

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which elements are the "superstars of electronegativity-fame" and have the highest EN?

• iron, nickel, copper, silver and gold

• oxygen, nitrogen, fluorine, chlorine, and bromine

• boron, carbon, oxygen, nitrogen, and fluorine

• lithium, sodium, potassium, rubidium, and cesium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

For polarity to occur in a bond, you need two elements with a difference in their electronegativities of ___

• 0.5 or less

• between 0.5 and 1.7

• less than 1.7

• greater than 1.7

CO₂ has charge asymmetry, but is not a polar molecule because it is ___

• linear

• bent

• tetrahedral

• trigonal pyramidal