Hydrogen facts

Chemical properties of Hydrogen:

-burns in air or in oxygen, gives off large amounts of heat, good fuel -high heat of combustion -doesn't support ordinarily combustion -good reducing agent, withdraws oxygen from many hot metal oxides

electrolysis formula

2H20-->2 H2 +O2

Na + H2O -> NaOH + H2

2Na + 2H2O -> 2NaOH + H2

Hydride

Any binary compound containing hydrogen, such as HCl.

CH4 + water

C0 + 3H2

hydrogen peroxide

Chemical compound of hydrogen and oxygen; a colorless liquid with a characteristic odor and slightly acid taste.

halogens

Contains nonmetals, 7 valence electrons in it's outermost energy level. Very reactive

reducing agent

Donates electrons and becomes oxidized.

Hydrogen sulfide

H2S (g)

hydrides

Hydrogen forms ionic _____ containing hydrogen as a 1⁻ ion (H⁻) with the elements in groups 1 and 2 e.g. NaH(s)except Be and molecular hydrides with groups 14-14 elements e.g. HCl.

hydrogen + halogen

Hydrogen halide

How does hydrogen exist in nature?

Hydrogen happens mainly in the form of water on Earth. Each water molecule (H 2 O) includes two atoms of hydrogen and one atom of oxygen.

Why do we need hydrogen?

Hydrogen is a significant water element. The body's cells remain hydrated due to water and help remove toxins from the body. Hydrogen enables the body to produce energy.

potassium

KH is the formula for _______ Hydride

Steam Reforming

Process in which steam is used to separate molecules of methane (CH4) into their component carbon and hydrogen atoms

Hydrogen

Simplest element and the most abundant element in the universe...making up 70% of the total mass of the universe

four

The End results of the steam reforming process of is that _____ molecules of H₂ are produced for each molecule of Methane (CH₄) produced.

Hydrogenation

The process of converting unsaturated fats to saturated fats by adding hydrogen

Hydrogen + Oxygen

Water (H2O)

liquid

______ hydrogen is used as a rocket fuel, motor vehicles, oxy-hydrogen torch, underwater welding

Halide

a binary compound of a halogen with another element or group.

tritium

a radioactive isotope of hydrogen

petroleum

another method of producing hydrogen is the ____ refining process

free radicals

chemical particles with an odd number of electrons .... are naturally occurring, highly reactive which form in the presence of oxygen e.g. hydrogen peroxide and are antibacterial

Physical properties of Hydrogen:

colorless, odorless, tasteless

odorless

colorless,___________ and very flammable are characteristics of the hydrogen gas

allotropes

different forms of the same element having different molecular structures

H₂

formula for hydrogen

Hydrogen + Fluorine

hydrogen fluoride

ammonia

hydrogen's primary use is in the production of this compound..NH₃

deuterium

is an isotope of hydrogen, is stable, consists of one proton and one neutron, can become part of a molecule called heavy water

density

its low _____ is what makes hydrogen gas suitable for use in balloons

Haber

making ammonia from nitrogen and hydrogen is known as the ______ process

Hydrogen uses

making ammonia, margarine, fuel etc methanol

protium

most common hydrogen isotope

hindenburg

name of the airship which exploded, ending the use of hydrogen in air ships

hydrogenation

the addition of hydrogen to double or triple bonds to make it more saturated and solid at room temperature

flammability

the characteristic of Hydrogen which excludes its us in air ships

fixation

the conversion of atmospheric nitrogen to a form that can be used by plants is known as nitrogen ___________

electrolysis

the decomposition of water to give hydrogen and oxygen gases due to the passage of an electric current.

Haber process

the manufacture of ammonia from nitrogen and hydrogen, carried out at high pressure and high temperature with the aid of a catalyst

hydrogen sulfide

the mixture of vapors, odors, and gases found in sewers

reforming

the most important commercial method of preparing hydrogen in the United States is by steam _______

Electrolysis

the process in which an electric current is used to produce a chemical reaction, such as the decomposition of water

oxidize

to combine with oxygen