Difference between revisions of "Positive Ion"
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: [[Hydrogen]] forms '''positive ions''' in some [[compound]]s and it is these [[Hydrogen Ion|H<sup>+</sup> ions]] which can make [[solution]]s [[acid]]ic. | : [[Hydrogen]] forms '''positive ions''' in some [[compound]]s and it is these [[Hydrogen Ion|H<sup>+</sup> ions]] which can make [[solution]]s [[acid]]ic. | ||
: '''Positive ions''' are attracted to [[Negative Ion|negative ions]] and to the [[Cathode|negative electrode (cathode)]] during [[electrolysis]]. | : '''Positive ions''' are attracted to [[Negative Ion|negative ions]] and to the [[Cathode|negative electrode (cathode)]] during [[electrolysis]]. | ||
| + | |||
| + | ===Examples=== | ||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:LithiumIonFormation.png|center|200px]] | ||
| + | |[[File:MagnesiumIonFormation.png|center|200px]] | ||
| + | |[[File:AluminiumIonFormation.png|center|200px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |[[Lithium]] forms +1 [[ion]]s. | ||
| + | | style="height:20px; width:200px; text-align:center;" |[[Magnesium]] forms +2 [[ion]]s. | ||
| + | | style="height:20px; width:200px; text-align:center;" |[[Aluminium]] forms +3 [[ion]]s. | ||
| + | |} | ||
Revision as of 15:51, 13 January 2019
Key Stage 4
Meaning
Positive ions are elements which have lost one or more electrons to become positively charged.
About Positive Ions
- In chemical reactions between metals and non-metals the metal elements form positive ions.
- Hydrogen forms positive ions in some compounds and it is these H+ ions which can make solutions acidic.
- Positive ions are attracted to negative ions and to the negative electrode (cathode) during electrolysis.
Examples
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| Lithium forms +1 ions. | Magnesium forms +2 ions. | Aluminium forms +3 ions. |