<span>Which element listed below is considered an alkaline earth metal?
</span>B) Magnesium
It is a mixture Beer is a homogeneous mixture (liquid solution) of H2O, C2H5OH, and a few other substances. (There is no beer molecule. The molecule that gives beer its inebriating property is ethanol.)
Answer:
differing electronegativity
Explanation:
the electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.
in ionic bond one of the 2 atoms attract the electrons from the another and don't share it so the electronegativity must be different to make the attract tendency different.
so,
first, when we speak about bond we should deal with electronegativity not the number of the neutrons or the melting points
second if the two electonegativities are similar then the electrons will be shared as in covalent bonds. but if they are different one will lose the electrons for the another one
Option C: a true solution will not separate in a centrifuge.
A solution is said to be a true solution if the solute particles form homogeneous mixture with the solvent. In a homogeneous mixture, the size of the particle of solute is less than 1 nm, can not be seen from naked ice. In such solutions, the solute particles completely dissolves in solvent in all proportions and cannot settle down at bottom if kept at rest for some time.
As complete dissolution of solute takes place, there is no cloudy appearance in the true solution also, once the solution is formed solute and solvent particles can not be separated with simple processes such as heating, boiling and centrifugation.
For example, solution of sugar and water, sugar particles completely dissolve in water to form homogeneous mixture or true solution.
Therefore, a true solution will not separate in a centrifuge.
