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Hydrogen

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Key Stage 2

Meaning

Hydrogen is a gas that can catch fire easily.

Key Stage 3

A 2 dimensional representation of a Hydrogen atom with 1 proton in the nucleus and 1 electron orbiting the nucleus.

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 to form a Hydrogen molecule.

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

  1. Collect the gas in a test tube.
  2. Place a lit splint over the mouth of the test tube.
  3. If a 'squeaky pop' sound is made then the gas is Hydrogen.

Key Stage 4

A 2 dimensional representation of the Bohr Model of a Hydrogen-1 isotope with 1 proton in the nucleus and 1 electron in its outer shell.

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.
HydrogenDotandCrossDiagram.png
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.png
Deuterium.png
Tritium.png
HydrogenSymbol.png
DeuteriumSymbol.png
TritiumSymbol.png
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

  1. Collect the gas in a test tube.
  2. Place a lit splint over the mouth of the test tube.
  3. 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

Edexcel

Hydrogen (as a fuel), page 139, GCSE Combined Science; The Revision Guide, CGP, Edexcel
Hydrogen (as a fuel), pages 71, 89, GCSE Chemistry; The Revision Guide, CGP, Edexcel
Hydrogen; as a fuel, pages 206, 207, 260, GCSE Chemistry, CGP, Edexcel
Hydrogen; test for, page 126, GCSE Chemistry, CGP, Edexcel

OCR

Hydrogen, pages 178-179, 186-187, Gateway GCSE Physics, Oxford, OCR