Liquids have free and fast moving particles. Liquids do not take a specific shape unless they are enclosed such as in a bottle. Anyway, since they are free flowing when they freeze, their movement becomes very slow. Eventually the particles will not have room to move as they used to and will be held in one place. The particles are still moving but they are only shaking or vibrating in the same place. You can't even tell this movement is happening, and that is what happens when liquid freezes.
The 2 represents that it is a double carbon bond
it looks like..
C-C = C-C
Mercury-199 is composed of 80 protons, 119 neutrons, and 80 electrons.
Answer:
A pH of 7 is neutral.A pH of less than 7 is acidic.
Explanation:
