Contents
Key Stage 2
Meaning
Hydrogen is a gas that can catch fire easily.
Key Stage 3
Meaning
Hydrogen is a non-metal element with 1 proton in the nucleus.
About Hydrogen
- Hydrogen has the chemical formula H2.
- Hydrogen is a gas at room temperature.
- Hydrogen gas is less dense than air.
- An atom of hydrogen has one electron.
- A Hydrogen ion has usually lost its only electron to become positively charged.
Testing for Hydrogen
- Collect the gas in a test tube.
- Place a lit splint over the mouth of the test tube.
- If a 'squeaky pop' sound is made then the gas is Hydrogen.
Key Stage 4
Meaning
Hydrogen is a non-metal element with 1 proton in the nucleus.
About Hydrogen
- Hydrogen has the chemical formula H2.
- Hydrogen is a gas at standard temperature and pressure.
- Hydrogen gas is less dense than air.
- An atom of hydrogen has one electron.
- A Hydrogen ion has usually lost its only electron to become positively charged.
Isotopes
| Hydrogen | Deuterium | Tritium |
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| 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. |