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Created page with "==Key Stage 2== ===Meaning=== Caesium is a metal. ==Key Stage 3== ===Meaning=== right|300px|thumb|The [[Chemical Symbol|chemical symbol for..."
==Key Stage 2==
===Meaning===
[[Caesium]] is a [[metal]].
==Key Stage 3==
===Meaning===
[[File:CaesiumSymbol.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Caesium]].]]
[[Caesium]] is a [[Group 1]] [[element]] with an [[Atomic Number|atomic number]] of 55.
===About Caesium===
: [[Caesium]] has the [[Chemical Formula|chemical formula]] [[Caesium|Cs]].
: [[Caesium]] as 55 [[proton]]s and 78 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 55 and an [[Relative Atomic Mass|atomic mass]] of 133.
: [[Caesium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Rubidium]] but less [[Reactivity|reactive]] than [[Francium]].
: [[Caesium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Caesium]] [[Chemical Reaction|reacts]] strongly with [[water]] to produce [[Hydrogen]] [[gas]] and [[Caesium Hydroxide]].
: [[Caesium]] is a [[solid]] at [[STP|room temperature]].
: An [[atom]] of [[Caesium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]].
: [[Caesium]] [[ion]]s have lost an [[electron]] to become [[Positive Charged|positively charged]].
==Key Stage 4==
===Meaning===
[[Caesium]] is a [[Group 1]] [[element]] with 55 [[proton]]s in the [[Atomic Nucleus|nucleus]].
===About Caesium===
: [[Caesium]] has the [[Chemical Formula|chemical formula]] [[Caesium|Cs]].
: The most [[Stable Isotope|stable isotope]] of [[Caesium]] has 78 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 133.
: [[Caesium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Rubidium]] but less [[Reactivity|reactive]] than [[Francium]].
: [[Caesium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Caesium]] [[Chemical Reaction|reacts]] strongly with [[water]] to produce [[Hydrogen]] [[gas]] and [[Caesium Hydroxide]].
: [[Caesium]] is a [[solid]] at [[STP|standard temperature and pressure]] with a [[Melting Point|melting point]] of 28.5 [[Degrees Celsius|°C]].
: An [[atom]] of [[Caesium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]].
: [[Caesium]] [[ion]]s have lost an [[electron]] to become [[Positive Charged|positively charged]].
===Meaning===
[[Caesium]] is a [[metal]].
==Key Stage 3==
===Meaning===
[[File:CaesiumSymbol.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Caesium]].]]
[[Caesium]] is a [[Group 1]] [[element]] with an [[Atomic Number|atomic number]] of 55.
===About Caesium===
: [[Caesium]] has the [[Chemical Formula|chemical formula]] [[Caesium|Cs]].
: [[Caesium]] as 55 [[proton]]s and 78 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 55 and an [[Relative Atomic Mass|atomic mass]] of 133.
: [[Caesium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Rubidium]] but less [[Reactivity|reactive]] than [[Francium]].
: [[Caesium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Caesium]] [[Chemical Reaction|reacts]] strongly with [[water]] to produce [[Hydrogen]] [[gas]] and [[Caesium Hydroxide]].
: [[Caesium]] is a [[solid]] at [[STP|room temperature]].
: An [[atom]] of [[Caesium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]].
: [[Caesium]] [[ion]]s have lost an [[electron]] to become [[Positive Charged|positively charged]].
==Key Stage 4==
===Meaning===
[[Caesium]] is a [[Group 1]] [[element]] with 55 [[proton]]s in the [[Atomic Nucleus|nucleus]].
===About Caesium===
: [[Caesium]] has the [[Chemical Formula|chemical formula]] [[Caesium|Cs]].
: The most [[Stable Isotope|stable isotope]] of [[Caesium]] has 78 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 133.
: [[Caesium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Rubidium]] but less [[Reactivity|reactive]] than [[Francium]].
: [[Caesium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Caesium]] [[Chemical Reaction|reacts]] strongly with [[water]] to produce [[Hydrogen]] [[gas]] and [[Caesium Hydroxide]].
: [[Caesium]] is a [[solid]] at [[STP|standard temperature and pressure]] with a [[Melting Point|melting point]] of 28.5 [[Degrees Celsius|°C]].
: An [[atom]] of [[Caesium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]].
: [[Caesium]] [[ion]]s have lost an [[electron]] to become [[Positive Charged|positively charged]].