Atomic Structure & Chemical Reactions

Question 1

Mass number

Answer 1

Mass of an atom found in its nucleus (sum of protons and neutrons)

Question 2

Atomic notation

Answer 2

Representing an element by showing atomic number and mass number

Question 3

Atomic mass unit

Answer 3

1 amu = 1/12 the mass of a carbon-12 atom

Question 4

Isotope

Answer 4

Have the same number of protons and different in nuetrons

Question 5

Ions

Answer 5

Atoms that have gained or lost electrons to become electrically charged

Question 6

Molar mass unit

Answer 6

g/mol

Question 7

Natural abundance

Answer 7

The percentage of a particular isotope found in nature

Question 8

Ionic compounds

Answer 8

Formed between a metal and a non-metal

Question 9

Covalent compounds

Answer 9

Formed between 2 metals

Question 10

Naming Ionic compounds include

Answer 10

Roman numerals

Question 11

Naming covalent compounds include

Answer 11

Mono, di, tri, tetra, penta, hexa

Question 12

Charge of an ionic compound

Answer 12

Neutral

Question 13

Binary Covalent compounds

Answer 13

Formed between 2 non-metals

Question 14

Why do elements form diatomic molecules

Answer 14

To achieve greater stability

Question 15

Subshells

Answer 15

s,p,d,f

Question 16

Max electron for s,p,d,f

Answer 16

S=2
P=6
D=10
F=14

Question 18

Orbitals for s,p,d,f

Answer 18

S=1
P=3
D=5
F=7

Question 19

Aufbau principle

Answer 19

Electrons fill the lowest-energy orbital first

Question 20

Right side of the equation

Answer 20

Reactants

Question 21

Left side of the equation

Answer 21

Products

Question 22

Symbol for a substance that dissolves in water

Answer 22

aq

Question 23

Coefficient in a chemical equation

Answer 23

The number of molecules or moles involved

Question 24

How to find mass number

Answer 24

P+N

Question 25

How to find neutrons

Answer 25

Mass number - atomic number