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
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
- 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
Molecular Structure
- Hydrogen has the chemical formula H2.
- Two Hydrogen 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.
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.
References
AQA
- Hydrogen, identification of, page 207, GCSE Chemistry, Hodder, AQA
- Hydrogen, page 106, GCSE Physics; Third Edition, Oxford University Press, AQA
- Hydrogen, pages 109, 130-1, 280-1, 283-4, 286-7, GCSE Physics; Student Book, Collins, AQA
- Hydrogen, pages 28, 8 6, 88-89, 122-123, 159, 184, GCSE Chemistry; Third Edition, Oxford University Press, AQA
- Hydrogen, pages 57, 134, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
- Hydrogen, pages 57, 159, GCSE Chemistry, CGP, AQA
- Hydrogen, test for, pages 160, GCSE Combined Science Trilogy 2, Hodder, AQA
- Hydrogen; bomb, page 131, GCSE Physics; Student Book, Collins, AQA
- Hydrogen; test for, page 203, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
- Hydrogen; test for, page 257, GCSE Chemistry, CGP, AQA