Question

complete this assignment if you need to make up the kmt activity.
1
which of these describes kinetic molecular theory?
particles are negligibly small compared to the volume of the container
the temperature is directly related to the volume of the container.
gas particles are strongly attracted to one another.
energy is lost when particles collide.
2
what happens to particles in matter when thermal energy is absorbed?
the average speed of the particles increases.
the particles move closer together.
the particles get larger.
strong attractions are formed between particles.
3
which of the following explains why liquids can flow and solids cannot?
solids weigh more than liquids and gases.
solids have particles that do not move.
solids have strong forces that hold the particles together.
solids have larger particles than gases and liquids.

Explanation:

1. Kinetic Molecular Theory: According to this theory, particles are negligibly small compared to the volume of the container. Gas particles have weak or no attractions between them, collisions are elastic (no energy loss), and temperature is related to average kinetic - energy, not directly to volume.
2. Effect of thermal energy absorption: When thermal energy is absorbed by particles in matter, the average speed of the particles increases as the added energy is converted to kinetic energy.
3. Difference between liquids and solids: Solids have strong forces that hold the particles together in a fixed position, which is why they cannot flow like liquids.

Answer:

1. Particles are negligibly small compared to the volume of the container
2. The average speed of the particles increases
3. Solids have strong forces that hold the particles together