alloy
Alloy
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The vocabulary word for a solid homogeneous mixture of two or more metals is "alloy." Alloys are created to enhance certain properties of the metals involved, such as strength, corrosion resistance, or malleability. Common examples include bronze (copper and tin) and steel (iron and carbon).
No, it is a homogenous alloy of 2 metals.
Il several metals have been mixed together it is a mixture, if that mixture is then melted so that the metals mingle at the atomic level it is an alloy. However for certain metals that have widely different melting points making an alloy by simply melting the mixture of those metals will not work (the lower melting temperature metals will melt first and separate from the mixture, in some cases one or metals might even evaporate before the higher melting temperature metals have begun to melt). For such alloys the metals must be melted in groups forming other alloys that must then be blended to create the final intended alloy.
No: Two metals mixed together form a special kind of homogeneous mixture called an "alloy".
It is a mixture.
another name is 'same kind' or alloy if it is 2 metals or a solution for heterogeneous, 'different kind', or a mechanical mixture
An alloy is a mixture of metals (or metals with other elements such as carbon). Why you might use them in a practical depends on what you are trying to find out. It would be unlikely that you would use them in simple chemical reactions as you usually want pure substances for that. I wonder if you mean why are they good for practical applications? They often behave in different ways from their constituents and these behaviours make them useful. For instance a mixture of lead and tin melts very easily so it's used for solder. Steels are alloys of iron with carbon and other metals and can be made with a wide range of useful properties.
a mixture of 2 or more substances
Isotopes
They are called Alkali-earth metals. Group 2 metals contain Beryllium, Magnesium, Calcium, Strontium, Barium, Radium.