D. mixture in which its components retain their identity
In a heterogeneous mixture, multiple substances are mixed, but they don't chemically react and they remain chemically the same.
7=cells
9= The Central Nervous system
10= not sure
Answer:
C6H5COOH + OH- —> C6H5COO- + H2O
Explanation:
C6H5COOH + OH- —> C6H5COO- + H2O
In the reaction above, C6H5COOH donate a proton(H+) to form the carboxylate ion C6H5COO-. The proton (H+) combines with the OH- to form H2O.
This can better be understood in the illustration below
C6H5COOH + NaOH —> C6H5COONa + H2O
Answer:
the number of atoms stays the same as the atoms lose energy to the colder freezer, slow down, get closer together, shrinking the volume
Explanation:
When a liquid is cooled, the average energy of the molecules decreases. At some point, the amount of heat removed is great enough that the attractive forces between molecules draw the molecules close together, and the liquid freezes to a solid.
I hope it helps.
Answer: The ionization energies of anions of group 17 elements will be higher than for neutral atoms of the same group.
Explanation:
The ionization energy is the energy required to remove an electron from the valence shell of an isolated gaseous atom of an element.
Ionization energy depends on:
a) Electronic configuration of an element: If on losing or gaining of an electron an element attains noble gas configuration or half filled stability then it will be difficult to remove the electron from stable configuration.
b) size of an element :larger the size more lesser the effective nuclear charge on electron thus lower the ionization energy.
Group 17 elements have 7 valence electrons and thus on gaining one electron , they attain stable noble gas configuration and thus the ionization energy will become higher.
