Question

2 elección múltiple 1 punto which phase of matter has the strongest attractions among particles? gases liquids solids 3 categorización 1 punto sort the following statements into true and false categories. true false no se eligieron respuestas no se eligieron respuestas respuestas posibles average kinetic energy is directly related to the kelvin temperature. all particles in a sample of gas move at the same speed. gas pressure is caused by collisions of gas particles with the sides of the container. particles of a gas are assumed to have no attractive forces between them. as temperature increases, gas particles will increase in speed. heating gases results in a higher density.

Explanation:

In solids, particles are closely packed and have the strongest inter - particle attractions. For the statements about gases:

• The average kinetic energy of gas particles is directly proportional to the Kelvin temperature, which is true according to the kinetic - molecular theory.
• Gas pressure is caused by the collisions of gas particles with the container walls, a fundamental concept of the kinetic - molecular theory.
• In the ideal gas model, particles of a gas are assumed to have no attractive forces between them.
• As temperature increases, the average kinetic energy of gas particles increases, so they move faster.
• All particles in a gas sample do not move at the same speed; there is a distribution of speeds.
• Heating gases causes them to expand (assuming constant pressure), resulting in a lower density.

Answer:

1. C. Solids

3.
True:

• Average kinetic energy is directly related to the Kelvin temperature.
• Gas pressure is caused by collisions of gas particles with the sides of the container.
• Particles of a gas are assumed to have no attractive forces between them.
• As temperature increases, gas particles will increase in speed.

False:

• All particles in a sample of gas move at the same speed.
• Heating gases results in a higher density.