Difference between revisions of "Acid"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
− | An [[acid]] is a [[chemical]] | + | An [[acid]] is a [[chemical]] [[dissolve]]d in [[water]] that has a [[pH]] less than [[Neutral (Chemistry)|7]]. |
===About Acids=== | ===About Acids=== | ||
+ | : [[Acid]]s can be an [[Irritant]], [[Harmful]] or [[Corrosive]] and should be handled with care. | ||
+ | : When an [[acid]] is [[dissolve]]d in [[solution]] the [[Hydrogen]] [[atom]]s in the [[molecule]] become free to move around and these are what make it an [[acid]]. | ||
+ | : [[Acid]]s can be [[concentrated]] or [[dilute]]. | ||
+ | : [[Acid]]s can be [[weak]] or [[strong]] which depends on the type of [[acid]] and the [[concentration]]. | ||
+ | : [[Acid]]s turn [[Litmus]] paper red. | ||
+ | : [[Acid]]s turn [[Universal Indicator]] pink, red, orange or yellow depending on the strength of the [[acid]]. | ||
+ | Some common [[Acid]]s you should know: | ||
+ | *[[Hydrochloric Acid]] - Found in the stomach. | ||
+ | *[[Citric Acid]] - Found in [[Citrus]] fruits. | ||
+ | *[[Ethanoic Acid]] - The common name for vinegar. | ||
+ | *[[Sulphuric Acid]] - Found in [[Electrical Cell]]s. |
Revision as of 10:57, 28 September 2018
Key Stage 3
Meaning
An acid is a chemical dissolved in water that has a pH less than 7.
About Acids
- Acids can be an Irritant, Harmful or Corrosive and should be handled with care.
- When an acid is dissolved in solution the Hydrogen atoms in the molecule become free to move around and these are what make it an acid.
- Acids can be concentrated or dilute.
- Acids can be weak or strong which depends on the type of acid and the concentration.
- Acids turn Litmus paper red.
- Acids turn Universal Indicator pink, red, orange or yellow depending on the strength of the acid.
Some common Acids you should know:
- Hydrochloric Acid - Found in the stomach.
- Citric Acid - Found in Citrus fruits.
- Ethanoic Acid - The common name for vinegar.
- Sulphuric Acid - Found in Electrical Cells.