Difference between revisions of "Chlorine"
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===About Chlorine=== | ===About Chlorine=== | ||
: [[Chlorine]] has the [[Chemical Formula|chemical formula]] [[Chlorine| Cl<sub>2</sub>]]. | : [[Chlorine]] has the [[Chemical Formula|chemical formula]] [[Chlorine| Cl<sub>2</sub>]]. | ||
| − | : [[Chlorine]] as 17 [[proton]]s and 18 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of | + | : [[Chlorine]] as 17 [[proton]]s and 18 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 17 and an [[Relative Atomic Mass|atomic mass]] of 35. |
: [[Chlorine]] is a more [[Reactivity|reactive]] [[Halogen]] than [[Bromine]] but less [[Reactivity|reactive]] than [[Fluorine]]. | : [[Chlorine]] is a more [[Reactivity|reactive]] [[Halogen]] than [[Bromine]] but less [[Reactivity|reactive]] than [[Fluorine]]. | ||
: [[Chlorine]] [[Chemical Reaction|reacts]] strongly with [[Hydrogen]] to produce [[Hydrogen Chloride]] which [[dissolve]]s in [[water]] to produce [[Hydrochloric Acid]]. | : [[Chlorine]] [[Chemical Reaction|reacts]] strongly with [[Hydrogen]] to produce [[Hydrogen Chloride]] which [[dissolve]]s in [[water]] to produce [[Hydrochloric Acid]]. | ||
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: An [[atom]] of [[Chlorine]] is missing one [[electron]] from having a full [[Outer Shell|outer shell]]. | : An [[atom]] of [[Chlorine]] is missing one [[electron]] from having a full [[Outer Shell|outer shell]]. | ||
: [[Chlorine]] [[ion]]s gain 1 [[electron]] to get a full [[Outer Shell|outer shell]] and become [[Negative Charged|negatively charged]]. | : [[Chlorine]] [[ion]]s gain 1 [[electron]] to get a full [[Outer Shell|outer shell]] and become [[Negative Charged|negatively charged]]. | ||
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==Key Stage 4== | ==Key Stage 4== | ||
===Meaning=== | ===Meaning=== | ||
Revision as of 15:19, 31 March 2019
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Chlorine is a Group 7 element, on the Periodic Table, with an atomic number of 17.
About Chlorine
- Chlorine has the chemical formula Cl2.
- Chlorine as 17 protons and 18 neutrons in its nucleus giving it an Atomic Number of 17 and an atomic mass of 35.
- Chlorine is a more reactive Halogen than Bromine but less reactive than Fluorine.
- Chlorine reacts strongly with Hydrogen to produce Hydrogen Chloride which dissolves in water to produce Hydrochloric Acid.
- Chlorine is a strong bleaching agent.
- Chlorine kills bacteria.
- Chlorine is a pale green coloured gas at room temperature.
- An atom of Chlorine is missing one electron from having a full outer shell.
- Chlorine ions gain 1 electron to get a full outer shell and become negatively charged.
Key Stage 4
Meaning
Chlorine is a Group 2 element, on the Periodic Table, with 17 protons in the nucleus.
About Chlorine
- Chlorine has the chemical formula Cl2.
- There are two stable isotopes of Chlorine, one with 18 neutrons and the other with 20 neutrons. They occur in a ratio of roughly 3:1 so the atomic mass of Chlorine is 35.5.
- Chlorine is the most reactive Halogen.
- Chlorine reacts strongly with Hydrogen to produce Hydrogen Chloride which dissolves in water to produce Hydrochloric Acid.
- Chlorine is a strong bleaching agent.
- Chlorine kills bacteria.
- Chlorine is a pale green coloured gas at standard temperature and pressure.
- An atom of Chlorine has only 2 electrons in its outer shell.
- Chlorine ions gain 1 electron to get a full outer shell and become negatively charged.
Testing For Chlorine
- Collect the gas in a test tube.
- Place a piece of litmus paper over the mouth of the test tube.
- If the litmus paper is bleached white then the gas is Chlorine or Fluorine.