The pH scale
Bases, such as soap, baking soda and many cleaners, are the opposite of acids: bitter, often slippery, and they turn indicators a different colour. The pH scale, from 0 to 14, says how acidic or basic a solution is: below 7 is acidic (the lower, the more acidic), 7 is neutral like pure water, and above 7 is basic. pH paper changes colour with pH. Strong acids and strong bases are both dangerous.
Depth 1 · Foundation
You can say whether a solution is acidic, neutral or basic from its pH, compare two solutions' pH, name some everyday bases, and read pH paper against its colour chart.
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- 1
Foundation
You can say whether a solution is acidic, neutral or basic from its pH, compare two solutions' pH, name some everyday bases, and read pH paper against its colour chart.
Your path here
What's still between you and The pH scale, depth 1, in the order you can learn it.
- 1MixtureDepth 1 · Foundation · Matter and Its Properties
- 2DissolvingDepth 1 · Foundation · Solutions, Acids and Bases
- 3Melting and freezingDepth 1 · Foundation · Matter and Its Properties
- 4States of matterDepth 1 · Foundation · Matter and Its Properties
- 5MatterDepth 1 · Foundation · Matter and Its Properties
- 6MatterDepth 2 · Deeper · Matter and Its Properties
- 7States of matterDepth 2 · Deeper · Matter and Its Properties
- 8Melting and freezingDepth 2 · Deeper · Matter and Its Properties
- 9Physical and chemical changeDepth 1 · Foundation · Chemical Reactions
- 10AcidsDepth 1 · Foundation · Solutions, Acids and Bases
- 11The pH scaleDepth 1 · Foundation · Solutions, Acids and Bases
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