TOPIC 2- Chemical Bonding

Question 1

Force of attraction that binds atom together in a given molecule.

Answer 1

Chemical Bond

Question 2

two non-metal atoms

Answer 2

covalent

Question 3

metal and non-metal atom

Answer 3

Ionic

Question 4

Metal atoms

Answer 4

metallic

Question 5

indicates the relative sizes and relative orientation of atoms

Answer 5

Space filling model

Question 6

three dimensional model using spheres and rods.

Answer 6

Ball and stick method

Question 7

the more electronegative element becomes the partial negative and become the central atom

Answer 7

Polar-Covalent Bonds

Question 8

atoms tend to gain, lose, or share electrons until they are surrounded by eight valence electrons

Answer 8

Octet Rule

Question 9

If elements involved are not from the same group, the central atom is determined by the

Answer 9

Greatest normal covalency

Question 10

a bond formed when each atom donates an electron

Answer 10

Normal Covalent Bond

Question 11

only one atom donates the electron pair to form a bond

Answer 11

Dative or Coordinate Covalent Bond

Question 12

atoms bonded has almost the same electronegativities

Answer 12

Non-polar covalent bond

Question 13

having different electronegativities

Answer 13

Polar Covalent Bond

Question 14

The ability of the atom in a molecule to attract electrons itself

Answer 14

Electronegativity

Question 15

 Takes energy to convert elements to atom
 Takes energy to create cation

Answer 15

Endothermic

Question 16

 Energy is released by making anion
 The formation of the solid releases a huge amount of energy

Answer 16

Exothermic

Question 17

The energy required to completely separate a mole of a solid ionic compound into its gaseous ions.

Answer 17

Lattice energy

Question 18

the number of bonds formed by an atom in forming a molecule

Answer 18

Covalency

Question 19

the number of electrons needed by an atom to have octet of electrons

Answer 19

Normal Covalency

Question 20

used to determine the number of covalent bonds formed.

Answer 20

Langmuir Formula

Question 21

When it is necessary to exceed the octet rule for one of several third-row (or higher) elements, assume that the extra electrons should be placed on the central atom

Answer 21

Expanded Octet

Question 22

it is an indication of the charge an atom would carry if it shared the electrons in a covalent bond equally.

Answer 22

Formal Charge

Question 23

single bonds

Answer 23

Localized Bonds

Question 24

Delocalized Bonds

Answer 24

multiple bonds