Differences between Oxygen Vs Hydrogen

Last Updated on March 19, 2022 by QCity Editorial Stuff

Oxygen and hydrogen are both essential to life, but they have some major differences. Oxygen is a colorless, odorless gas that is necessary for the body to produce energy. Hydrogen is a colorless, flammable gas that is used in oil refining and to create water. In this blog post, we’ll take a closer look at the differences between oxygen and hydrogen.

Oxygen and hydrogen are both important gases for humans. Oxygen is necessary for humans to breathe, while hydrogen is a component of water, which is also essential for human life. However, there are some differences between oxygen and hydrogen that are worth noting. For example, oxygen is a colorless and odorless gas, while hydrogen has a characteristic smell that is often described as “sickly sweet.” Additionally, oxygen is heavier than air and will sink in it, while hydrogen is lighter than air and will rise in it. Finally, oxygen supports combustion while hydrogen does not. All of these differences make oxygen and hydrogen unique gases with different applications.

Comparison between Oxygen and Hydrogen

Parameters of ComparisonOxygenHydrogen
AtomThe atomic weight of hydrogen is 1 while the atomic weight of oxygen is 16Hydrogen has one electron in its outer shell while oxygen has 8 electrons in its outer shell
ReactiveOxygen is more reactive than hydrogen because it bonds with other elements easierHydrogen gas can be made by passing an electric current through water molecules, but you cannot make oxygen gas this way 
CombineWhen you combine two atoms of hydrogen, they form a molecule of H2;when you combine two atoms of oxygen, they form a molecule of O2 
EnergyIt takes twice as much energy to break up H2O into individual particlesH20 to react with O2 and create 2H20 molecules
Boiling pointoxygen’s boiling point is -360 degrees FahrenheitThe boiling point of hydrogen is -252 degrees Fahrenheit

What is Oxygen?

Oxygen is a gas that we need to breathe to survive. It makes up 20% of the air that we breathe, and without it, we would die within minutes. Oxygen helps our cells function by providing them with the energy they need for survival. The more oxygen you use (oxygen consumption), the more your body will produce and release carbon dioxide as a waste product. With less oxygen available, your body will produce lactic acid as an alternative source of fuel which can cause muscle fatigue and even cramping if there’s not enough oxygen available for those muscles to work properly.

Oxygen is an element that is found in the air and is necessary for human life. It is a colorless, odorless gas that makes up about 21% of the Earth’s atmosphere. Oxygen supports combustion and helps to transport energy throughout the body. In this blog post, we will discuss the history of oxygen, how it is produced, and some of its uses. We will also explore some of the health benefits of oxygen therapy.

Differences between Oxygen Vs Hydrogen

What is Hydrogen?

Hydrogen is a chemical element, atomic number 1 on the periodic table. It’s an odorless, colorless gas that has many uses in industry and research. But what is hydrogen? Hydrogen comes from the Greek word meaning “water-former.” This means it can be produced by reacting water with a metal such as aluminum or magnesium to produce hydrogen gas. Hydrogen was first discovered by chemists Robert Boyle and Henry Cavendish in 1766 when they reacted to water with iron filings to produce bubbles of hydrogen gas. They also found that the bubbling would stop if the air was passed through this mixture of iron filings and water which led them to conclude that only oxygen produces bubbles while nitrogen creates no reaction at all.

Differences between Oxygen Vs Hydrogen

10 Differences between Oxygen and Hydrogen

1. Hydrogen is the simplest and most abundant element in the universe.

2. The boiling point for hydrogen is -252°C (-423°F).

3. Hydrogen gas has no odor, but it can be detected by several sensors.

4. Oxygen gas has an odor that can be recognized as either ‘sweet’ or ‘sour’ depending on the concentration.

5. At room temperature, oxygen gas is a pale blue color while hydrogen gas is colorless and odorless.

6. One mole (the molecular weight of one kilogram) of hydrogen contains 2 grams while one mole of oxygen contains 32 grams.

7. Oxygen is an element, while Hydrogen is a gas.

8. Oxygen has eight protons and eight electrons in its nucleus, while Hydrogen only has one proton and one electron.

9. Oxygen’s atomic weight is 16.0067 grams per mole (g/mol), while hydrogen’s atomic weight is 1.008 g/mol.

10. The melting point of oxygen is -218 degrees Celsius (-360 Fahrenheit), but the melting point of hydrogen isn’t known because it isn’t solid at room temperature.

Interesting Statistics or Facts of Oxygen

1. Oxygen keeps us alive and is the third most abundant element in our atmosphere.

2. The first person to discover oxygen was Joseph Priestley.

3. Oxygen has a chemical formula of O2.

4. Humans breathe out 19% oxygen and 81% carbon dioxide when they exhale.

5. For humans to survive, we need at least 10 minutes worth of air per hour.

6. A human being will die without any oxygen after 8-10 minutes underwater.

Interesting Statistics or Facts of  Hydrogen

1. Hydrogen is the most abundant element in the universe.

2. The first hydrogen atom was synthesized by a British chemist, Sir James Dewar, using electrolysis on water.

3. Hydrogen gas has a low boiling point so it can be easily liquefied.

4. One of the few substances that burn with an almost colorless flame.

5. The only two elements that are found naturally as gases at standard temperature and pressure are hydrogen and helium.

6. When heated to its upper autoignition temperature of 3400 K (5427 °F), hydrogen will ignite in the air without any need for a spark or other ignition source.


The difference between oxygen and hydrogen is that hydrogen has an electron in the second orbit, while oxygen only has two electrons. If you’re looking for a little more information on how these gases interact with each other, take a look at this article to learn about their similarities and differences. We hope it helps you make sense of the different types of atoms.

It is important to know the differences between hydrogen and oxygen. If you want to be a successful engineer, you must understand these two elements for your work to progress. One of the main differences is their atomic weight: Hydrogen has an atomic weight of 1 while Oxygen has an atomic weight of 16. This distinction makes fire possible because when there are enough atoms present with such small weights, they can combine very easily into molecules that then react with each other and release heat energy as well as light energy from combustion reactions. Another difference is how often they occur on Earth- Hydrogen occurs more frequently than oxygen does due to its lighter molecular makeup which allows it easier escape from our atmosphere through what we call “radiation.” It.


Resource 01: https://en.wikipedia.org/wiki/Oxygen
Resource 02: https://www.rsc.org/periodic-table/element/1/hydrogen

Scroll to Top