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[[Hydrogen]] is a [[non-metal]] [[element]] with 1 [[proton]] in the [[Atomic Nucleus|nucleus]].
===About Hydrogen===
====Molecular Structure====
: [[Hydrogen]] has the [[Chemical Formula|chemical formula]] [[Hydrogen|H<sub>2</sub>]].
: Two [[Hydrogen]] [[atom]]s join together to form a [[Hydrogen]] [[molecule]].
====Atomic Structure====
: [[Hydrogen]] has 1 [[proton]] and 0 [[neutron]]s so it has an [[Relative Atomic Mass|atomic mass]] of 1.
: An [[atom]] of [[hydrogen]] has one [[electron]].
: A [[Hydrogen]] [[ion]] has usually lost its only [[electron]] to become [[Positive Charge|positively charged]].
====Properties====
: [[Hydrogen]] is a [[gas]] at [[STP|room temperature]].
: [[Hydrogen]] [[gas]] is less [[density|dense]] than [[air]].
: An [[atom]] of [[hydrogen]] has one [[electron]].: A [[Hydrogen]] [[ionChemical Reaction|reacts]] has usually lost its only with [[electronOxygen]] to become form [[Positive Charge|positively chargedwater]]. ====Testing for Hydrogen====
#Collect the [[gas]] in a [[Test Tube|test tube]].
#Place a lit [[Wooden Splint|splint]] over the mouth of the [[Test Tube|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 [[Atomic Nucleus|nucleus]].
===About Hydrogen===
====Molecular Structure====
: [[Hydrogen]] has the [[Chemical Formula|chemical formula]] [[Hydrogen|H<sub>2</sub>]].
: Two [[HydrogenIodine]] is a [[gasatom]] at s join together in a [[STPCovalent Bond|standard temperature and pressurecovalent bond]].: {| class="wikitable"|-|[[HydrogenFile:HydrogenDotandCrossDiagram.png|center|400px]] |-| style="height:20px; width:200px; text-align:center;" |A [[gasDot and Cross Diagram|dot and cross diagram]] is less of a [[density|denseHydrogen]] than [[airmolecule]].|}====Atomic Structure====: An The most common [[atomisotope]] of [[hydrogenHydrogen]] has one 1 [[electronproton]].: A and 0 [[Hydrogen]] [[ionneutron]] s so it has usually lost its only [an [electron]] to become [[Positive ChargeRelative Atomic Mass|positively chargedatomic mass]]of 1.===Isotopes===
{| class="wikitable"
| style="height:20px; width:200px; text-align:center;" |[[Hydrogen]]
| style="height:20px; width:200px; text-align:center;" |[[Hydrogen]] always has 1 [[proton]] but in this [[isotope]] there is 2 [[neutron]]s. 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 [[Positive Charge|positively charged]].
====Properties====
: [[Hydrogen]] is a [[gas]] at [[STP|standard temperature and pressure]].
: [[Hydrogen]] [[gas]] is less [[density|dense]] than [[air]].
: [[Hydrogen]] [[Chemical Reaction|reacts]] with [[Oxygen]] to form [[water]].
===Testing for Hydrogen===
#Collect the [[gas]] in a [[Test Tube|test tube]].
#Place a lit [[Wooden Splint|splint]] over the mouth of the [[Test Tube|test tube]].
#If a 'squeaky pop' [[sound]] is made then the [[gas]] is [[Hydrogen]].