Alkali
noun
A substance that reacts with an acid to form a salt and water.
Soap is an alkali that reacts with the acid in dirt to help remove it.
Often appears as...
- strong alkali
- weak alkali
Usage tips
Technical
noun
A type of soil that contains a lot of alkali.
The farmers had to treat the alkali soil to grow their crops.
Often appears as...
- alkali soil
- alkali lands
Usage tips
Academic
noun
A chemical element found in column 1A of the Periodic Table.
Potassium and sodium are examples of alkali metals.
Often appears as...
- alkali metals
- alkali-earth metals
Usage tips
Academic
noun
A substance that reacts with an acid to form a salt and water.
Soap is an alkali that reacts with the acid in dirt to help remove it.
Often appears as...
- strong alkali
- weak alkali
Usage tips
Technical
noun
A type of soil that contains a lot of alkali.
The farmers had to treat the alkali soil to grow their crops.
Often appears as...
- alkali soil
- alkali lands
Usage tips
Academic
noun
A chemical element found in column 1A of the Periodic Table.
Potassium and sodium are examples of alkali metals.
Often appears as...
- alkali metals
- alkali-earth metals
Usage tips
Academic
Definition 1 of 3
Pro Tip 1/3Neutralization Reaction
Alkali is used to neutralize acids, a common reaction in chemistry.
Adding an alkali can neutralize vinegar's acidity.
Pro Tip 2/3Common Products
Many cleaning products contain alkali substances that react to stains.
The bottle says the cleaner has alkali to fight grease.
Pro Tip 3/3pH Scale
Alkalis have a pH greater than 7 and feel slippery to the touch.
This alkali solution turned the pH paper blue.
Pro Tip 1/3Neutralization Reaction
Alkali is used to neutralize acids, a common reaction in chemistry.
Adding an alkali can neutralize vinegar's acidity.
Pro Tip 2/3Common Products
Many cleaning products contain alkali substances that react to stains.
The bottle says the cleaner has alkali to fight grease.
Pro Tip 3/3pH Scale
Alkalis have a pH greater than 7 and feel slippery to the touch.
This alkali solution turned the pH paper blue.
Pro Tip 1/3Neutralization Reaction
Alkali is used to neutralize acids, a common reaction in chemistry.
Adding an alkali can neutralize vinegar's acidity.
Pro Tip 2/3Common Products
Many cleaning products contain alkali substances that react to stains.
The bottle says the cleaner has alkali to fight grease.
Pro Tip 3/3pH Scale
Alkalis have a pH greater than 7 and feel slippery to the touch.
This alkali solution turned the pH paper blue.
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Video examples
Lithium 101 PIPE National...
and as large as electric vehicles. The versatility of lithium has helped catapult many technological developments largely due to the metal's unique chemical properties. Lithium is classified as an alkali metal. When combined with water,
Video examples
Lithium 101 PIPE National...
and as large as electric vehicles. The versatility of lithium has helped catapult many technological developments largely due to the metal's unique chemical properties. Lithium is classified as an alkali metal. When combined with water,
Example 1 of 1
Quote examples
Friedrich Bergius
German Scientist
Even in the investigations into direct production of calcium peroxide in an alkali melt with highly compressed oxygen, it was found to be necessary to bring the high-pressure gas into contact with the suspension of lime in caustic alkali melt by agitation or some other means of mixing.
Quote examples
Friedrich Bergius
German Scientist
Even in the investigations into direct production of calcium peroxide in an alkali melt with highly compressed oxygen, it was found to be necessary to bring the high-pressure gas into contact with the suspension of lime in caustic alkali melt by agitation or some other means of mixing.
Example 1 of 1
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