Chapter 1

Question 1

C

Answer 1

Carbon

Question 2

H

Answer 2

Hydrogen

Question 3

Li

Answer 3

Lithium

Question 4

Na

Answer 4

Sodium

Question 5

Mg

Answer 5

Magnesium

Question 6

K

Answer 6

Potassium

Question 7

B

Answer 7

Boron

Question 8

Al

Answer 8

Aluminum

Question 9

N

Answer 9

Nitrogen

Question 10

O

Answer 10

Oxygen

Question 11

F

Answer 11

Fluorine

Question 12

P

Answer 12

Phosphorus

Question 13

S

Answer 13

Sulfur

Question 14

Cl

Answer 14

Chlorine

Question 15

Br

Answer 15

Bromine

Question 16

I

Answer 16

Iodine

Question 17

Protons

Answer 17

Positive charge

Atomic # -> Identifies element

Question 18

Mass #

Answer 18

protons + # neutrons
ID of isotope
EX: Carbon - 12 (12 is mass #)

Question 19

What is ground state?

Answer 19

The lowest energy arrangement possible for the distribution of electrons among atom’s orbitals

Question 20

Aufbau Principle

Answer 20

fill orbitals low energy to high energy

Question 21

Pauli exclusion principle

Answer 21

2e-/orbital

Question 22

Hund’s Rule

Answer 22

half fill degenerate orbitals before pairing

Question 23

electrons

Answer 23

determine chemical properties (especially valence electrons)

Question 24

Octet rule

Answer 24

Each molecule has 8 electrons around it (Complete valence shell)

Question 25

Ionic bonding

Answer 25

Complete transfer of e-

Question 26

Covalent bonding

Answer 26

Sharing of e-