Contents
Key Stage 2
Key Stage 3
Meaning
Hydrogen is a non-metal element with 1 proton in the nucleus.
About Hydrogen
Molecular Structure
Atomic Structure
- Hydrogen has 1 proton and 0 neutrons so it has an atomic mass of 1.
- An atom of hydrogen has one electron.
- A Hydrogen ion has usually lost its only electron to become positively charged.
Properties
- Hydrogen is a gas at room temperature.
- Hydrogen gas is less dense than air.
- Hydrogen reacts with Oxygen to form water.
Testing for Hydrogen
Key Stage 4
Meaning
Hydrogen is a non-metal element with 1 proton in the nucleus.
About Hydrogen
Molecular Structure
- Hydrogen has the chemical formula H2.
- Two Iodine atoms join together in a covalent bond.
A dot and cross diagram of a Hydrogen molecule. |
Atomic Structure
- The most common isotope of Hydrogen has 1 proton and 0 neutrons so it has an atomic mass of 1.
Hydrogen | Deuterium | Tritium |
Hydrogen always has 1 proton but isotope there are no neutrons. | Hydrogen always has 1 proton but in this isotope there is 1 neutron. This isotope of Hydrogen is known as Deuterium. | Hydrogen always has 1 proton but in this isotope there is 2 neutrons. This isotope of Hydrogen is known as Tritium. |
- An atom of hydrogen has one electron.
- A Hydrogen ion has usually lost its only electron to become positively charged.
Properties
- Hydrogen is a gas at standard temperature and pressure.
- Hydrogen gas is less dense than air.
- Hydrogen reacts with Oxygen to form water.