When a solid melts and consequently boils, there is
...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 .
The atomic number of chlorine is 17. What is the number of electrons in a chloride ion? ...
Which of the following statements is FALSE? ...
When magnesium ribbon burns in air, the products are...
What is the chemical symbol for Praseodymium? ...
Which of the following elements can from more than one acidic oxide? ...
Which of the following compounds has hydrogen bonds between its molecules? ...
What type of bond exits between an element X with atomic number 12 and Y with atomic number 17? ...