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alkalis are corrosive, normally water soluble and are very soapy.

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16y ago
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14y ago

1)Alkalis have a High Ph 2)Alkalis often feel soapy 3)Alkallis can be corrosive 4)Alkalis Neutralise Acids to make Salts

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Q: List four properties of alkalis
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What ions are present in alkalis?

The main ions present in alkalis are hydroxide ions (OH-) and cations such as sodium (Na+), potassium (K+), or calcium (Ca2+). These ions are responsible for giving alkalis their alkaline properties.


Do alkalis produce OH- ions in solution?

Yes, alkalis produce hydroxide ions (OH-) in solution. Alkalis are soluble bases that dissociate in water to release hydroxide ions, which are responsible for their alkaline properties.


What element do all alkalis contain?

All alkalis contain the hydroxide ion (OH-). This hydroxide ion is responsible for the characteristic properties of alkalis, such as their ability to neutralize acids and their ability to turn litmus paper blue.


What is a substances in a alkali?

One common substance found in alkalis is hydroxide ions, which are present in solutions of alkalis such as sodium hydroxide (NaOH) or potassium hydroxide (KOH). Hydroxide ions are responsible for the characteristic basic properties of alkalis, including their ability to neutralize acids.


What 2 things do alkalis and acids form together?

Alkalis and acids react together to form salt and water. This is known as a neutralization reaction, where the acidic properties of the acid combine with the basic properties of the alkali to produce a neutral solution.


Who was the first scientist to suggest groupin substances into acids and alkalis?

The first scientist to suggest grouping substances into acids and alkalis was the French chemist Antoine Lavoisier in the 18th century. He categorized these substances based on their chemical properties and reactions.


Why certain household products contains acids bases or alkalis?

Household products contain acids, bases, or alkalis depending on their intended purpose and chemical properties. For example, acids are found in cleaning products to dissolve dirt and grime, bases are used in drain cleaners to break down clogs, and alkalis can be present in detergents for their cleaning properties. Each type of chemical provides specific benefits in terms of cleaning, disinfecting, or deodorizing.


Why do alkalis make your skin feel slimy?

Alkalis can react with the oils in your skin to form soap, which is slippery and slimy. This reaction changes the surface properties of your skin, making it feel slimy to the touch.


Are bases called alkali's?

Bases are not called alkalis. Alkalis are a specific subset of bases that are soluble in water. All alkalis are bases, but not all bases are alkalis.


Why are alkalis the opposite of acids?

Alkalis are substances that produce hydroxide ions (OH-) in solution, while acids produce hydrogen ions (H+). When an acid reacts with an alkali, they neutralize each other forming water and a salt, which is why they are considered opposites in terms of their chemical properties. Acids have a pH below 7, while alkalis have a pH above 7 on the pH scale.


Are alkalis are alkalis red when added to acid?

maybe


Can you list four size independent properties?

Density, melting point, boiling point, and refractive index are size independent properties of a substance. These properties remain constant regardless of the amount or size of the sample.