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Gramatically alkaline is an adjective and alkali is a noun, e.g. alkaline batteries.

In chemistry they are different elements. The alkali metals are a common family of elements, i.e. group 1 of the Periodic Table, and consist of metals like lithium, sodium and potsium. The alkaline earth metals are a different family of elements, ie. group 2 of the periodic table, and consist of earth metals like magnesium and calcium. In solution they are both basic, i.e. yielding a pH greater than 7, but the alkali metals are far more reactive than the earth metals.

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βˆ™ 13y ago
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βˆ™ 7mo ago

Acids are substances that release hydrogen ions in water and have a pH below 7, making them sour in taste. On the other hand, alkalis (bases) are substances that release hydroxide ions in water and have a pH above 7, making them bitter in taste. Acids have a corrosive effect, while alkalis have a caustic effect.

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βˆ™ 15y ago

Alkali (and not Alkalie!) is the water soluble oxides or hydroxides of Group I or II elements.This is a substance. Now when a solution is made with this substance with water, then this solution is termed as alkaline because of its typical characteristics.

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βˆ™ 13y ago

Group 1 of the periodic table of Mendeleev, alkaline metals: Li, Na, K, Cs, Rb, Fr (monovalent metals)

Group 2 of the periodic table of Mendeleev, alkaline-earth metals: Be, Ca, Mg, Sr, Ba, Ra (bivalent metals)

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βˆ™ 13y ago

An acid yields hydrogen ions (H+) when dissolved in water and has a pH of less than 7. An alkali, also called a base, yields hydroxide ion (OH-) and has a pH greater than 7.

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Q: Difference between acid and alkalis
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Acids are substances that donate protons in a chemical reaction, while alkalis are substances that accept protons. Acids have a pH value below 7, whereas alkalis have a pH value above 7. Acids tend to taste sour, while alkalis tend to taste bitter.


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