Hydrogen, nitrogen, oxygen, fluorine, chlorine, and all the noble gases exist as a gas at standard temperature and pressure.
Don't they all exist in the three states of matter? Depending on the temperature...
Water can exist in three states: solid (ice), liquid (water), and gas (water vapor). Each state is achieved through changes in temperature and pressure.
This point is call the "triple point" and this is where all three lines meet together on the phase diagram.
The point where temperature and pressure allow for all three states of matter (solid, liquid, and gas) to coexist is known as the triple point. At the triple point, the substance can exist in equilibrium in all three states.
I am assuming that you mean at room temperature and 1 standard atmosphere. Under such conditions, mercury would be a liquid.Any material's physical state is determined by its temperature and the pressure being exerted upon it. Mercury, as well as most elements/compounds, can exist in all three states if exposed to the proper conditions.
The three elements that exist in the gaseous state at room temperature are helium, nitrogen, and oxygen.
Any chemical has that capacity, if you create the necessary conditions of temperature and pressure. All elements and all compounds can exist as solids, liquids, or gases.
Bromine, Br2, and mercury, Hg, are the only elements that are liquids at room temperature.
Carbon(C),Oxygen(O) and Mercury(Hg)
There are three elements in period 2 that are gases at room temperature and standard pressure: nitrogen (N), oxygen (O), and fluorine (F).
Don't they all exist in the three states of matter? Depending on the temperature...
Water can exist in three states: solid (ice), liquid (water), and gas (water vapor). Each state is achieved through changes in temperature and pressure.
The temperature at which a substance may exist in all three phases (solid, liquid, and gas) simultaneously is known as the triple point. At the triple point, the substance's vapor pressure, temperature, and phase equilibrium are all in balance, allowing for coexistence of all phases.
This point is call the "triple point" and this is where all three lines meet together on the phase diagram.
At the super critical point. The required temperature and pressure may vary depending on the substance
The point where temperature and pressure allow for all three states of matter (solid, liquid, and gas) to coexist is known as the triple point. At the triple point, the substance can exist in equilibrium in all three states.
Water can exist in three states: solid (ice), liquid (water), and gas (vapor). These states are determined by the temperature and pressure conditions that the water is subjected to.