Answer:
The answer to your question is below
Explanation:
7.- Sublimation is when a solid turns into a gas without becoming a liquid.
8.- Solidification or freezing is when the temperature of a liquid diminishes
and it turns into a solid.
9.- Melting is the process when a solid change into a liquid because of the
temperature increases.
10.- Condensation is the change in the state of matter from gas phase to a liquid phase.
11.- Evaporation is the process when a liquid turns into a gas.
Answer:
double covalent bond
Explanation:
Double covalent bond -
It is the type of interaction observed between two species , which share the electrons in order to attain stability , is referred to as covalent bond.
The shared electrons are referred to as the bonding pairs or the shared pairs .
Stability and completion of the octet is the driving force for the formation covalent bond.
The molecules of the organic compound usually shows this type bonding .
A double covalent bond is the one which have four shared pair of electrons , i.e. two covalent bonds.
Hence , from the question,
Oxygen is capable to show double covalent bond .
In order to preserve substance, we must create a low temperature environment. In order to do this, we must remove the heat energy in the environment via reactions that will absorb heat energy. These are endothermic reactions. The answer is C.
Answer:
"<em><u>A</u></em><em><u>L</u></em><em><u>U</u></em><em><u>M</u></em><em><u>I</u></em><em><u>N</u></em><em><u>U</u></em><em><u>M</u></em><em><u> </u></em>FOIL" will conduct heat much more effectively than black construction paper.
Answer is (4) - Se.
Among the given choices Se has the highest electronegativity value as 2.4 compared to others. Hence, Se shows <span>greatest attraction for electrons in a chemical bond.
</span>Electronegativity is
a value that tells us how an atom can attract electrons towards itself. <span>If
the electronegativity is high, then the attraction to the electrons is also high.
</span>
