Spring Final Review

Electronegativity is

• One-half of the distance between the center of identical atoms that are not bonded together

• ability of an atom to attract electrons from another atom.

• energy needed to remove the outermost electron.

• • Any process that results in the formation of an ion 

Which element has a greater atomic radius, fluorine (F) or calcium (Ca)?

• fluorine

• calcium

Which halogen is found in period 3?

• bromine

• chlorine

• argon

• fluorine

Elements in the same group or family have _____________.

• the same number of valence electrons and different properties.

• the same number of valence electrons and similar properties

• different number of valence electrons and similar properties.

• different number of valence electrons and different properties.

Most of the elements on the periodic table are classified as _____.

• nonmetals

• metals

• periods

• metalloids

How many carbon atoms are present in one molecule of acetic acid(CH₃ COOH)

• 2

• 3

• 1

• 4

What is the percent by mass of carbon in CH₃?

• 80%

• 20%

• 54%

• 5%

How many particles are in a mole? (avogadro's number)

• 6.022

• 6022 moles

• 6022 million

• 6.022x10²³

Which list of number of atoms in Al₂ (SO₄ )₃ is right?

• Al: 1

  S: 4

  O: 4

• Al: 2

  S: 3

  O: 12

• Al: 6

  S: 3

  O: 12

• Al: 2

  S: 1

  O: 12

Define polar covalent.

• a covalent bond with an uneven sharing of electrons

• a covalent bond with an even sharing of electrons

• 
  an ionic bond with an uneven sharing of electrons

• an ionic bond with an even sharing of electrons