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What do the alkali metals look like when the oil is removed and a freshly cut surface exposed?
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What are the three properties of alkali metals?
1 electron in their outer shell, very reactive and are shiny but they lose their shiny surface when exposed to air.
How are Alkaline metals compared to alkali metals?
alkali metals are the "mad" elements who explode when exposed to a certain element. for example, sodium cannot be exposed to hydrogen, or it will explode. on the other hand, alkaline earth metals are good conductors, but they do not explode. they also come only from the earth and its crust.
Are alkali metals gray?
No, they are not.Sodium might look grey if you are looking at a tarnished surface, but a fresh-cut surface is distinctly yellow. Similarly a fresh-cut surface of potassium has a definite lilac appearance.
Why do alkali metal explode when exposed to water?
Because they decompose the water to pure hydrogen and oxygen. The hydrogen is a flammable gas and the oxygen is the oxidizing agent that reacts together in an explosive manner.Caesium
Is a alkali a atom?
No. An alkali is a compound: the hydroxide of al alkali metal.
What are the three properties of alkali metals?
1 electron in their outer shell, very reactive and are shiny but they lose their shiny surface when exposed to air.
Is potassium shiny on the periodic table?
Potassium is an alkali metal.It is shiny when freshly cut but quickly go dull.
How do you determine if all traces of alkali have been removed?
Litmus paper
Which groups of elements are silvery-white metals that tarnish when exposed to air?
The elements are the alkali metals.
What happens to an alkali metals surface as soon as it is scratched?
quickly oxidation
How are Alkaline metals compared to alkali metals?
alkali metals are the "mad" elements who explode when exposed to a certain element. for example, sodium cannot be exposed to hydrogen, or it will explode. on the other hand, alkaline earth metals are good conductors, but they do not explode. they also come only from the earth and its crust.
What are the Physical traits of sodium?
At room temperature, sodium metal is so soft that it can be easily cut with a knife. In air, the bright silvery luster of freshly exposed sodium will rapidly tarnish. The density of alkali metals generally increases with increasing atomic number, but sodium is denser than potassium. Source: http://en.wikipedia.org/wiki/Sodium#Characteristics
What happens when francium and cesium are exposed to water?
All alkali metals react violently with water forming a hydroxide and hydrogen.
Why do alkali metals have lower ionization energies than the alkali earth metals?
Alkali gases only have 1 electron needing to be removed to reach a stable noble gas configuration. Alkaline earths have two electrons. Alkali metals thus have the lower ionization energy of the two groups.
If you add alkali to water what colour would the water be?
Alkalis are bases dissolved in water. They do not have specific colours and are often colourless liquids.Indicators are used to determine the strength of an acid or alkali and change colour when exposed to the liquid.Look at Universal Indicator Solution.
What is the anti-acid alkali fabric?
Anti-acid alkali fabric:The anti-acid alkali fabric is widely used for preventing the harmful of acid and alkali and extend the time of acid penetration into the skin from the surface of a garment and no surface adhesion. And after acid erosion, the strength of the garment changed little and can sustain the high acid fracturing.The anti-acid alkali fabric is widely used for preventing the harmful of acid and alkali and extend the time of acid penetration into the skin from the surface of a garment and no surface adhesion. And after acid erosion, the strength of the garment changed little and can sustain the high acid fracturing.The anti-acid alkali fabric is breathable and can protect the acid-alkali and oil liquid for a long time and have the good anti-acid alkali property, which protect the workers very well and can pass the EN 13034.The classification of the anti-acid alkali fabric:1. The normal anti-acid alkali fabric: add the anti acid alkali treatment when producing the fabric, it is similar to the normal fabric and suitable to the normal acid alkali environment.2. Severe anti-acid alkali: cotted on the normal anti-acid alkali fabric. After coated, the fabric have strong property of anti-acid alkali fabric and can be suitable to the high density anti-acid alkali environment.The anti-acid alkali fabric manufacture by Xinxiang Yulong Textile is the poly cotton blended and the 100% natural synthetic fiber with the anti-acid alkali treated. It conquer the old rubber or plastic's air proof, heavy and the uncomfortable and very suitable for the light and middle acid alkali environment.The fabric can protect the acid-alkali harmful to the body and have the property of long time anti acid and high anti acid pressure and suitable for the workers under the acid alkali environment for a long time. The quantity and protective property can meet the requirement of GB 12012 and the EN 14325, EN 13034, EN 368.
Alkali metals are extremely reactive because?
because they have one valence electron that is easily removed to form a positive ion.
