Section 10.1- Hydrogen

Question 1

since ancient time, the most important aspect of chemistry has been its

Answer 1

practical application

Question 2

a survey of the chemical and processes that are important to our daily lives

Answer 2

descriptive chemistry

Question 3

the simplest element

Answer 3

hydrogen

Question 4

the most abundant element in the universe
70% of the total mass of the universe and 90% of the atoms

Answer 4

hydrogen

Question 5

most all hydrogen is

Answer 5

protium (lighter)

Question 6

second isotope of hydrogen

Answer 6

deuterium (2:1)

Question 7

third hydrogen isotope

Answer 7

tritium

Question 8

a colorless, odorless, tasteless gas that is very flammable

Answer 8

hydrogen

Question 9

the most important commercial method of preparing hydrogen in the United States is a process called

Answer 9

steam reforming

Question 10

another method of preparing very pure hydrogen

Answer 10

electrolysis

Question 11

ways to produce hydrogen gas

Answer 11

1. steam reforming
2. electrolysis of water

Question 12

the primary use of hydrogen is the ________________

Answer 12

synthesis of ammonia

Question 13

process used to synthesize ammonia from hydrogen

Answer 13

Haber process

Question 14

the addition of hydrogen to double or triple bonds is

Answer 14

hydrogenation

Question 15

hydrogen does take the form of an __________ under extremely high pressure

Answer 15

alkali metal

Question 16

the oxide of deuterium, called ______________ is used as a coolant and moderator in certain types of nuclear reactors

Answer 16

heavy water