Chemistry: Expansion & Contraction

As particles are exposed to warmer temperatures they __________

• speed up & have more kinetic energy

• slow down & have less kinetic energy

• stay the same

• vibrate at fixed positions

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

As particles are exposed to colder temperatures they _____

• speed up
• slow down
• stay the same
• become ions

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Number 2 represents a ________

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

Particles in a _____________ are tightly packed together.

• solid
• liquid
• gas
• plasma

Tags

NGSS.MS-PS1-4

When objects absorb heat, the particles...

• gain energy and vibrate at fixed position.
• gain energy and increase in size.
• gain energy and move slower.
• gain energy and move faster.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Objects gain heat and _________. 

• expand
• contract

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When temperature decreases, distance between molecules ____________.

• increases

• decreases

• stays the same

Tags

NGSS.MS-PS1-4

Thermal expansion occurs when particles of matter move farther apart as temperature increase.

• True

• False

Tags

NGSS.MS-PS1-4

Many objects, such as train tracks and road joints, are specifically designed to allow extra space for ...

• thermal energy
• specific heat
• thermal expansion
• conductors

Kinetic energy is what type of energy?

• chemical

• electric

• motion

• sound

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2