Chapter 2 Flashcards
1
Q
Essential Elements
A
O, C, H, N
2
Q
Atomic Number
A
Number of protons
3
Q
Mass Number
A
Number of protons and neutrons
4
Q
If energy is absorbed, where does the electron move?
A
Outside shell
5
Q
If energy is released, where does the electron move?
A
Inside shell
6
Q
4 types of bonds
A
Covalent, ionic, hydrogen, van dee waals interactions
7
Q
What is a covalent bond?
A
The sharing of valence electrons ; strongest bond
8
Q
Nonpolar bond is
A
Equal
9
Q
Polar bond is
A
Not equal
10
Q
Electronegativity
A
Tendency of atom to attract a bonding pair of electrons
11
Q
What is an ionic bond?
A
Donation of electron to another atom
12
Q
What is a hydrogen bond?
A
Hydrogen bonds between water molecules ; weak bond
13
Q
What is a van der waals interaction?
A
Very weak attraction between molecules that are close together
