This is the process in which particles move from areas of high concentration to areas of lower concentrations until there is an equal concentration of particles throughout.

• Diffusion

• Kinetic Energy

• Random Motion

When particles move in different directions and at different speeds, the particles are said to be

• moving in random motion

• diffusing

• expanding and contracting

Tags

NGSS.MS-PS3-1

Which statement is true about the kinetic energy particles have and their motion.

• particles that move faster have more kinetic energy.

• particles that move slower have more kinetic energy energy.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which 3 statements are true about kinetic energy?

• Kinetic energy is also known as "motion energy"

• Kinetic energy can be measured using a thermometer

• When kinetic energy increases so does the particle speed

• When kinetic energy increases, the particle speed decreases

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

which two pieces of evidence are the best evidence to support that when kinetic energy changes, so does the volume of the liquid.

(p.16-17)

• When the liquid in the thermometer gained kinetic energy, the volume of the liquid increased.

• When the liquid in thermometer lost kinetic energy, the volume of the liquid decreased.

• The volume of the liquid in the thermometer remained constant even when kinetic energy changed.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which best describes what happens to particles when they lose kinetic energy?

p.17

• When particles in a solid, liquid, or gas lose kinetic energy, thermal contraction occurs as particle motion decreases, the particles move close together, and the volume of the substance decreases.

• When particles in a solid, liquid, or gas lose kinetic energy, thermal expansion occurs as the particles move faster, collide, and push farther each other further apart resulting in an increase in volume of the substance .

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statement best describes what happens when particles

gain kinetic energy?

p.17

• When particles in a solid, liquid, or gas gain kinetic energy, thermal contraction occurs when the particles move close together and the volume of the substance decreases.

• When particles in a solid, liquid, or gas gain kinetic energy, thermal expansion occurs as the particles move faster, farther apart, and the volume of the substance increases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following statements are true about temperature? Choose all the true statements

• temperature is a measure of kinetic energy

• Temperature is measuring the average speed of the particles

• Temperature increases when kinetic energy increases

• Temperature decreases when kinetic energy decreases

• None of the statements are true

Tags

NGSS.MS-PS1-4

Which two pieces of evidence best support how gas particles behave when kinetic energy (KE) changes?

(p.19)

• When the balloon was placed in the freezer, the gas particles moved slower, closer together, and thermal contraction occurred.

• When the balloon returned to room temperature, the gas particles moved faster, farther apart, and thermal expansion occurred.

• Thermal expansion and contraction only happen in liquids and not in gases.

Tags

NGSS.MS-PS1-4

Which 2 pieces of evidence support that that particles in solids move when they gain or lose kinetic energy (KE)?

(p.20)

• When the metal ball returned to room temperature, thermal contraction occurred and the metal particles moved slower and closer together.

• When the metal ball was heated, the particles moved faster, farther apart, and thermal expansion occurred.

• Thermal expansion and contraction do not occur in solids.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4