Ch. 1-3 Chemical Bonds

Question 0

What are responsible for bonding

Answer 0

Valence electrons

Question 1

The attraction that holds molecules together

Answer 1

Chemical bond

Question 2

Transfer of electrons from one atom to another

Answer 2

Ionic bond

Question 3

Sharing of electron from one atom to another

Answer 3

Covalent bond

Question 4

When does ionic bonds occur

Answer 4

When electronegativity is high giving an atom the ability to attract electrons

Question 5

Occurs when electrons are shared equally

Electronegativity less than 1

Answer 5

Nonpolar covalent bond

Question 6

What forms as a result of an ionic bond

Answer 6

Cation and anion

Question 7

Electrons are not equally shared

Electronegativity of 1 or over

Answer 7

Polar covalent bond

Question 8

What type of bonds are ionic bonds

Answer 8

Weak bonds

Especially in solutions

Question 9

Attraction between oppositely charged portions of two different molecules

Answer 9

Hydrogen bond

Question 10

Significance of hydrogen bonds

Answer 10

Very weak and are easily broken

Easily reformed

Question 11

How is the chemical behavior of an atom determined by it’s electron configuration

Answer 11

Number if valence electrons

Question 12

Why do atoms form chemical bonds

Answer 12

To complete valence shell

Question 13

Strongest bonds

Answer 13

Covalent nonpolar

Question 14

Weakest bond

Answer 14

Hydrogen bond

Question 15

How can you determine if the bond between two atoms is polar covalent, nonpolar covalent, or ionic

Answer 15

Through electronegativity

If less than 1 nonpolar covalent
If more than 1 polar covalent
If equal to or greater than 2 ionic

Question 16

How is the shape of a molecule important in biological systems

Answer 16

Shape is directly related to function

Question 17

Charged atom or molecule

Answer 17

Ion

Question 18

What is the biological importance of weak bonds

Answer 18

Necessary for chemical reactions
Stabilize molecules
Enzyme catalysts