Which statement is true about the particles in liquid water at 100ºC and the particles in steam at 100ºC? (Select ALL that apply)
the particles will have the same kinetic energy
the space between the particles is different, with more space between particles in a gas
the particles will have different kinetic energy
the space between the particles is different, with less space between particles in a gas
I've been trying to figure this out for three hours, and I STILL don't know what it is.
the space between the particles is different, with more space between particles in a gas
the particles will have different kinetic energy
The average KE of a substance is a function ONLY of its temperature; therefore the state doesn't matter the KE of liquid water @ 100 and gaseous water @ 100 C is the same. And you know the molecules of H2O are farther apart in the gas than in the liquid. So pick out those two in the answers and get a good night's sleep.
thx
Poato
To determine which statements are true about the particles in liquid water at 100ºC and the particles in steam at 100ºC, let's break down the options one by one:
1. The particles will have the same kinetic energy: This statement is not true. At 100ºC, the water in its liquid state has a lower kinetic energy compared to steam. This is because in the liquid phase, the particles are closer together and have weaker intermolecular forces, resulting in slower movement.
2. The space between the particles is different, with more space between particles in a gas: This statement is true. In steam, which is the gaseous state of water at 100ºC, the particles are further apart compared to liquid water. Gas particles have more freedom to move and occupy a larger volume, which results in more space between them.
3. The particles will have different kinetic energy: This statement is true. As mentioned earlier, the kinetic energy of the particles in water and steam differs. In a gaseous state, the particles have higher kinetic energy due to the increased movement associated with the higher temperature.
4. The space between the particles is different, with less space between particles in a gas: This statement is not true. The opposite is correct. In the gaseous state (steam) at 100ºC, the particles are further apart and occupy more space compared to the liquid state.
So, the two correct statements are:
- The space between the particles is different, with more space between particles in a gas.
- The particles will have different kinetic energy.
Sometimes scientific concepts can be challenging to understand, but breaking down the options and considering the characteristics of each state of matter can help in figuring out the correct answers.