Which of the following compounds will undergo additional reactions?
Ethyne
Butane
Pentane
Tetrachloromethane
Ethanol
Correct answer is A
No explanation has been provided for this answer.
When a solid melts and consequently boils, there is
a gradual increase in the average kinetic energy of the particles
a sudden decrease in the kinetic energy of the particles
no change in the average kinetic energy of the particles
a rapid change in the nature of bonding of the components
a change in the size of the fundamental particles
Correct answer is A
- When a metal melts or boils, this is a change of physical state. Energy is transferred to a substance to melt or boil it.
- an increase in temperature will increase the average kinetic energy of the molecules.
- This energy is needed to overcome the forces of attraction between the metal ions and the delocalize electrons in the metal. The more energy needed, the higher the melting point or boiling point .
has a lower density than iron
is a better conductor than iron
does not corrode spontaneously
forms thin layer of inert oxide in moist air
forms amphoteric oxides while iron does not
Correct answer is D
No explanation has been provided for this answer.
solution
neutralization
vaporization
sublimation
activation
Correct answer is C
No explanation has been provided for this answer.
The electronic configuration 1s2 22s 22p 63s23p 6 is that of a
noble gas
Group ll element
Group lll element
Group V element
Group VI element
Correct answer is A
No explanation has been provided for this answer.