x

Question 1

electronegativity

Answer 1

ability of an atom to attract electrons in a covalent bond

Question 2

electronegativity difference in a covalent bond

Answer 2

0

Question 3

electronegativity difference in a polar covalent bond

Answer 3

0- 1.8

Question 4

electronegativity difference in an ionic bond

Answer 4

greater than 1.8

Question 5

when will a bond be non- polar?

Answer 5

• bonded atoms are the same

- bonded atoms have the same or similar electronegativity

Question 6

why is water a polar molecule?

Answer 6

• 2 O-H bonds each have a permanent dipole
• not symmetrical
• dipoles do not cancel out

Question 7

why is carbon dioxide a non-polar molecule?

Answer 7

• 2 C=O bonds each have a permanent dipole
• symmetrical molecule
• dipoles cancel out

Question 8

what are the 3 main categories of intermolecular forces?

Answer 8

• London forces
• permanent dipole- dipole interactions
• hydrogen bonds