If a test tube has been used, and its contents is supposed to be disposed, carefully pour the contents to the lavatory with a confirmation of a professional (as it may damage the pipelines of the sink) and ensure that there are no splashes created that can contact the human skin. Wash the test tube thoroughly and let dry.
Explanation:
the most common gas in the atmosphere is nitrogen and oxygen followed by CO2 etc...
Answer:
point of view is a particular attitude or way of considering a matter.
Explanation:
pls mark brainliest
Answer:
Entre ellas la más destacada y elaborada es la Hipótesis de la Automedicación que propone que los trastornos por dependencia de drogas son el resultado de la existencia de una alteración biológica
Explanation:
Answer:
Ionic
Explanation:
Ionic bond:
It is the bond which is formed by the transfer of electron from one atom to the atom of another element.
Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.
For example:
calcium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for calcium is 1. There is large difference is present. That's why electron from calcium is transfer to the chlorine. calcium becomes positive and chlorine becomes negative ion.
There are two valance electrons in calcium so it needed to lose two valance electrons to complete the octet while chlorine needed one electron to complete the octet. Thus two electrons lost by one calcium atom are gained by two atoms of chlorine.
Ca + Cl₂ → CaCl₂
