Hydrogen
noun
It is the simplest and lightest chemical element with the symbol H.
Water is made up of hydrogen and oxygen.
Often appears as...
- hydrogen atoms
- hydrogen molecules
Usage tips
Academic
noun
It is a gas without color, taste, or smell that is used mostly in making other chemicals.
Hydrogen is used in the production of ammonia.
Often appears as...
- produce hydrogen
- hydrogen fuel
Usage tips
Technical
noun
It is the simplest and lightest chemical element with the symbol H.
Water is made up of hydrogen and oxygen.
Often appears as...
- hydrogen atoms
- hydrogen molecules
Usage tips
Academic
noun
It is a gas without color, taste, or smell that is used mostly in making other chemicals.
Hydrogen is used in the production of ammonia.
Often appears as...
- produce hydrogen
- hydrogen fuel
Usage tips
Technical
Definition 1 of 2
Pro Tip 1/3Science Classes
Hydrogen is often discussed in chemistry and physics as part of the periodic table of elements.
In our chemistry class, we learned that hydrogen is the first element on the periodic table.
Pro Tip 2/3Cosmic Abundance
Hydrogen is the most abundant element in the universe, relevant in space-related contexts.
Astronomers estimate that hydrogen makes up about 75% of the universe's elemental mass.
Pro Tip 3/3Common Compound
Hydrogen is part of many everyday compounds, such as water and organic substances.
Every molecule of water has two hydrogen atoms bonded to an oxygen atom.
Pro Tip 1/3Science Classes
Hydrogen is often discussed in chemistry and physics as part of the periodic table of elements.
In our chemistry class, we learned that hydrogen is the first element on the periodic table.
Pro Tip 2/3Cosmic Abundance
Hydrogen is the most abundant element in the universe, relevant in space-related contexts.
Astronomers estimate that hydrogen makes up about 75% of the universe's elemental mass.
Pro Tip 3/3Common Compound
Hydrogen is part of many everyday compounds, such as water and organic substances.
Every molecule of water has two hydrogen atoms bonded to an oxygen atom.
Pro Tip 1/3Science Classes
Hydrogen is often discussed in chemistry and physics as part of the periodic table of elements.
In our chemistry class, we learned that hydrogen is the first element on the periodic table.
Pro Tip 2/3Cosmic Abundance
Hydrogen is the most abundant element in the universe, relevant in space-related contexts.
Astronomers estimate that hydrogen makes up about 75% of the universe's elemental mass.
Pro Tip 3/3Common Compound
Hydrogen is part of many everyday compounds, such as water and organic substances.
Every molecule of water has two hydrogen atoms bonded to an oxygen atom.
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Video examples
What can Schrödinger's...
Of course, that's what happens, and you know this because you have witnessed events like this countless times. You've been observing the physics of everyday phenomena your entire life. But suppose we explore a question about the physics of atoms, like what does the motion of an electron around the nucleus of a hydrogen atom look like?
Video examples
What light can teach us...
Along with the idea that the visible universe has been constantly expanding from a densely packed single point, one of this theory's most important predictions is that the early universe consisted of just two hydrogen and helium, in a ratio of three to one. And this prediction can also be tested with light.
Video examples
The science of...
To understand that, we need to delve deeper into the physics of water. Water is made out of two hydrogen atoms and one oxygen atom. A single water molecule thus has ten protons and ten electrons, eight from oxygen and one from each hydrogen atom. The two electrons from oxygen's outer shell
Video examples
The law of conservation...
in the three minutes that followed the birth of our universe. Eventually, clusters of atoms accumulated and formed stars. Within these stars, nuclear reactions fused light elements, such as hydrogen and helium, to form heavier elements, such as carbon and oxygen.
Video examples
You are your microbes -...
As food travels through our digestive tract, it reaches the fermentors who extract energy from these sugars by converting them into chemicals, like alcohol and hydrogen gas, which they spew out as waste products. Deeper in the depths of our gut city,
Video examples
Turning chicken feathers...
feathers opens up these hollow tubes which absorbs some gases even better than the world-famous carbon nanotubes for metal hybrids so if carbonized chicken feathers should be able to store hydrogen which is an amazing fuel but was too expensive to
Video examples
Julian Baggini: Is there...
think about pretty much anything else in the universe, maybe apart from the very most fundamental forces or powers. Let's take something like water. Now my science isn't very good. We might say something like water has two parts hydrogen
Video examples
Jupiter 101 PIPE National...
surround by a worldwide ocean of hydrogen and helium gases. Jupiter's gassiest composition can be observed in its atmosphere. About 44 miles thick, the atmosphere is a canvas of stripes and storms,
Video examples
Is it possible to create...
The universe is bustling with matter and energy. Even in the vast apparent emptiness of intergalactic space, there's one hydrogen atom per cubic meter. That's not the mention a barrage of particles
Video examples
The Creation Of The...
imprinted into our universe as regions of slightly different density in the hydrogen and helium gas that formed shortly after the big bang
Video examples
What can Schrödinger's...
Of course, that's what happens, and you know this because you have witnessed events like this countless times. You've been observing the physics of everyday phenomena your entire life. But suppose we explore a question about the physics of atoms, like what does the motion of an electron around the nucleus of a hydrogen atom look like?
Video examples
What light can teach us...
Along with the idea that the visible universe has been constantly expanding from a densely packed single point, one of this theory's most important predictions is that the early universe consisted of just two hydrogen and helium, in a ratio of three to one. And this prediction can also be tested with light.
Video examples
The science of...
To understand that, we need to delve deeper into the physics of water. Water is made out of two hydrogen atoms and one oxygen atom. A single water molecule thus has ten protons and ten electrons, eight from oxygen and one from each hydrogen atom. The two electrons from oxygen's outer shell
Video examples
The law of conservation...
in the three minutes that followed the birth of our universe. Eventually, clusters of atoms accumulated and formed stars. Within these stars, nuclear reactions fused light elements, such as hydrogen and helium, to form heavier elements, such as carbon and oxygen.
Video examples
You are your microbes -...
As food travels through our digestive tract, it reaches the fermentors who extract energy from these sugars by converting them into chemicals, like alcohol and hydrogen gas, which they spew out as waste products. Deeper in the depths of our gut city,
Video examples
Turning chicken feathers...
feathers opens up these hollow tubes which absorbs some gases even better than the world-famous carbon nanotubes for metal hybrids so if carbonized chicken feathers should be able to store hydrogen which is an amazing fuel but was too expensive to
Video examples
Julian Baggini: Is there...
think about pretty much anything else in the universe, maybe apart from the very most fundamental forces or powers. Let's take something like water. Now my science isn't very good. We might say something like water has two parts hydrogen
Video examples
Jupiter 101 PIPE National...
surround by a worldwide ocean of hydrogen and helium gases. Jupiter's gassiest composition can be observed in its atmosphere. About 44 miles thick, the atmosphere is a canvas of stripes and storms,
Video examples
Is it possible to create...
The universe is bustling with matter and energy. Even in the vast apparent emptiness of intergalactic space, there's one hydrogen atom per cubic meter. That's not the mention a barrage of particles
Video examples
The Creation Of The...
imprinted into our universe as regions of slightly different density in the hydrogen and helium gas that formed shortly after the big bang
Example 1 of 10
Quote examples
Robert Jay Lifton
American Psychologist
And I thought about the psychic numbing involved in strategic projections of using hydrogen bombs or nuclear weapons of any kind. And I also thought about ways in which all of us undergo what could be called the numbing of everyday life.
Quote examples
Dan Lipinski
American Politician
And when these advances are made, hydrogen can fill critical energy needs beyond transportation. Hydrogen can also be used to heat and generate electricity for our homes. The future possibilities of this energy source are enormous.
Quote examples
Peter Diamandis
American Businessman
With sufficient water on the Moon, solar energy can be used to split the water into hydrogen and oxygen. The oxygen is, of course, critical for humans to breathe and the water important for us to drink.
Quote examples
Mordechai Vanunu
Israeli Scientist
Second point is no one here could predict or know that Israel was involved or started producing the hydrogen bomb - the most advanced and powerful atomic bomb that can kill millions of people.
Quote examples
Charlie Dent
American Politician
Hydrogen is the most common element in the universe, and has the potential to become an inexpensive source of energy for neighborhoods, light and heavy duty vehicles, and industry.
Quote examples
Francis William Aston
British Scientist
The whole of the hydrogen on the earth might be transformed at once and the success of the experiment published at large to the universe as a new star.
Quote examples
Carl Sagan
American Scientist
We are the representatives of the cosmos; we are an example of what hydrogen atoms can do, given 15 billion years of cosmic evolution.
Quote examples
Frank Zappa
American Singer
There is more stupidity than hydrogen in the universe, and it has a longer shelf life.
Quote examples
Albert Wynn
American Politician
I was encouraged to hear that GM has made great progress on the hydrogen car.
Quote examples
Harlan Ellison
American Writer
The two most common elements in the universe are hydrogen and stupidity.
Quote examples
Robert Jay Lifton
American Psychologist
And I thought about the psychic numbing involved in strategic projections of using hydrogen bombs or nuclear weapons of any kind. And I also thought about ways in which all of us undergo what could be called the numbing of everyday life.
Quote examples
Dan Lipinski
American Politician
And when these advances are made, hydrogen can fill critical energy needs beyond transportation. Hydrogen can also be used to heat and generate electricity for our homes. The future possibilities of this energy source are enormous.
Quote examples
Peter Diamandis
American Businessman
With sufficient water on the Moon, solar energy can be used to split the water into hydrogen and oxygen. The oxygen is, of course, critical for humans to breathe and the water important for us to drink.
Quote examples
Mordechai Vanunu
Israeli Scientist
Second point is no one here could predict or know that Israel was involved or started producing the hydrogen bomb - the most advanced and powerful atomic bomb that can kill millions of people.
Quote examples
Charlie Dent
American Politician
Hydrogen is the most common element in the universe, and has the potential to become an inexpensive source of energy for neighborhoods, light and heavy duty vehicles, and industry.
Quote examples
Francis William Aston
British Scientist
The whole of the hydrogen on the earth might be transformed at once and the success of the experiment published at large to the universe as a new star.
Quote examples
Carl Sagan
American Scientist
We are the representatives of the cosmos; we are an example of what hydrogen atoms can do, given 15 billion years of cosmic evolution.
Quote examples
Frank Zappa
American Singer
There is more stupidity than hydrogen in the universe, and it has a longer shelf life.
Quote examples
Albert Wynn
American Politician
I was encouraged to hear that GM has made great progress on the hydrogen car.
Quote examples
Harlan Ellison
American Writer
The two most common elements in the universe are hydrogen and stupidity.
Example 1 of 10
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