Chapter 4 Compounds and Stoichiometry

Question 1

What is Atomic weight?

Answer 1

Weight of one atom. On periodic table

Question 2

What is Molecular Weight?

Answer 2

Weight of multiple atoms together (1 molecule)

Question 3

What is molar mass?

Answer 3

Atomic Weight of the respective molecule * # of atoms in molecule

Question 4

How are alkali metals typically found?

Answer 4

As cations in salts like (NaCl)

Question 5

What is Gram Equivalent Weight?

Answer 5

Mass of an equivalent

Question 6

What is Normality?

Answer 6

Ratio of equivalents

Question 7

What is an Equivalent?

Answer 7

Moles of a specific species

Question 8

What is the law of constant composition?

Answer 8

Pure sample has same elements in same ratio

Question 9

What is empirical formula?

Answer 9

Small whole # ratio of elements

Question 10

What is molecular formula?

Answer 10

Gives exact # of atoms in each element

Question 11

What is combustion rxn?

Answer 11

Fuel+oxidant = H20 + CO2

Question 12

What is dbl displacement rxn?

Answer 12

When elements from 2 compounds trade places

Question 13

What is Neutralization rxn?

Answer 13

acid + base = salt

Question 14

Which ending indicates less oxygens in an molecule?

Answer 14

-ite

Question 15

Which ending indicates more oxygens in an molecule?

Answer 15

-ate

Question 16

What are the values for 1/8 through 7/8?

Answer 16

1/8 = 0.125
2/8 = 0.25
3/8 = 0.375
4/8 = 0.5
5/8 = 0.625
6/8 = 0.75
7/8 = 0.875

Question 17

What are the values for 1/9 to 4/9?

Answer 17

1/9 = 0.111
2/9 = 0.222
3/9 = 0.333
4/9 = 0.444