The answer is baking a cake.
The answer is c. because you have to increase concentration of h2
(1) Francium - 0.7 Lowest
(2) Barium - 0.89
(3) Aluminium- 1.61
(4) Copper - 1.90
(5) Phosphorus - 2.19
(6) Flurorine - 3.98 Highest electronegativity in periodic lable
I think that it might represent Velocity
Short Answer:
C)
Long Answer:
A- When a solid is heated, it melts and becomes a liquid. (Another older term is Fusion.) An example of this is ice to water when you leave it outside the freezer.
B- When a liquid becomes a gas, it undergoes a process called boiling. Example: When you boil water, it becomes steam.
C- It is called deposition. Example: How snow forms in clouds.