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What happen to the molecules when a substance changed state from a liquid to a gas?
They move freely in all directions (except collisions), no forces between each other
Which phase of matter has negligible interactions between molecules?
The gas phase has negligible interactions between molecules compared to the liquid and solid phases. Gas molecules are far apart and move freely, rarely interacting with each other except during collisions.
Why is the thermal conductivity of a liquid larger than of a gas?
The molecules in a liquid are densely packed than in a gas. The shorter distance between the molecules allows the energy to transfer more efficiently between molecules, therefore allowing more heat to pass between them.
What is the difference between the molecules in a hot solid and hot liquid?
The molecules in a solid vibrate in place. The molecules of a liquid are moving about.
Why do water molecules cohere to form a liquid?
Water molecules cohere to form a liquid due to hydrogen bonding between the molecules. This hydrogen bonding leads to a net attractive force between the molecules, allowing them to stay close together in a liquid state.
When liquid water is heated do molecules collide more often?
Yes, as liquid water is heated, the kinetic energy of its molecules increases, causing them to move faster and collide more often. This increased movement and collisions among the water molecules lead to a rise in temperature.
Why would rising temperature speed up diffusion in a liquid?
Rising temperature increases the kinetic energy of molecules in a liquid, causing them to move more quickly and collide more frequently. This increased motion leads to faster diffusion as molecules spread out more rapidly.
When you shake a bottle what increases the pressure?
When you shake a bottle, the kinetic energy of the liquid molecules increases, leading to more frequent and forceful collisions with the walls of the bottle. This increase in collisions results in an increase in pressure inside the bottle due to the greater force exerted by the molecules on the walls.
What is between the molecules of liquid water?
Water molecules are linked by hydrogen bonds.
In steam are the forces between molecules the same as the forces between the molecules in water?
The forces between molecules in steam are weaker than the forces between molecules in liquid water. In steam, molecules are far apart and move freely, resulting in weak intermolecular forces. In liquid water, molecules are closer together and have stronger intermolecular forces due to hydrogen bonding.
What is true if a liquid and a gas are in equilibrium?
liquid molecules forming a gas and gas molecule forming a liquid are equal in number
Is carbon dioxide more soluble under high pressure or low pressure?
Carbon dioxide is more soluble under high pressure because higher pressure forces more gas into solution due to increased collisions between gas molecules and the liquid solvent. Conversely, under low pressure, less gas dissolves into the liquid due to fewer collisions.
