25_T2_L05_Diffusion

What does concentration refer to in chemistry?

• The temperature of a substance

• The number of particles in a given volume

• The speed of particle movement

• The color of a solution

Match the following statements about kinetic energy and temperature.

• ... change in temperature.

• As the temperature rises...

• ... the heat is reduced.

• Particles slow down as ...

• ... the motion of particles speeds up.

• The kinetic energy will change with a ...

What does equilibrium mean in the context of diffusion?

• Particles are moving randomly

• Particles are in a gas state

• Particles are in a solid state

• Particles are spread out evenly

Diffusion occurs only in (a)   .

• solids
• gases
• liquids
• gases and liquids

What is dynamic equilibrium?

• A state of constant temperature.

• The continuous movement of particles maintaining an even spread.

• A state where no movement occurs.

• A condition of high concentration.

How do particles move during diffusion?

• In predictable paths

• Randomly with the available energy

• Only in straight lines

• Only when heated

Diffusion is the net movement of particles from an area of (a)   concentration to an area of ​ (b)   concentration.

• low
• high
• no
• equilibrium
• stable
• kinetic

What does an increase in temperature indicate about kinetic energy?

• The kinetic energy becomes negative.

• The kinetic energy stays the same.

• The kinetic energy increases.

• The kinetic energy decreases.

What is meant by random movement of particles?

• Particles move in an unpredictable manner.

• Particles move in straight lines only.

• Particles move in predictable patterns.

• Particles do not move at all.

• Particles change direction when they collide with other particles or the container.