Answer:
yes it can be attracted without touching The electric force is a non-contact force. Any charged object can exert this force upon other objects - both charged and uncharged objects.
Explanation:
Sodium chloride has a high meltint point because of the strong electrostatic attraction between its positive and negative ions.
Answer:
Recrystallization refers to the method used for purifying chemical compounds. In this method, the chemical compound along with the impurities is dissolved in an appropriate hot solvent, to separate the chemical compound and the impurity.
The pure chemical compound that separates after the recrystallization process exists in the form of crystals.
Generally, the impure chemical compound is fully dissolved in the <u>minimum amount of the solvent</u>, thus forming a saturated solution. This is because if large amount of solvent is used, then a large amount of the chemical compound will remain dissolved in the solvent, even after cooling.
<u>Therefore, all of the chemical compound will not get recrystallized.</u>
Answer:
Un rapport de laboratoire permet à une personne qui n'a pas réalisé l'expérience de comprendre le but du laboratoire, la procédure à suivre pour atteindre cet objectif ainsi que les résultats obtenus.