Topic 2: Solids, Liquids, and Gases

When a volleyball is left in the sun, the air pressure -_________ as it warms in the sun.

• Increases

• Decreases

• Stays the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Match the following words and definitions

• Pressure

• The force of an outward push over an area of the walls of its container.

• Matter

• The total potential and kinetic energies of an object.

• Temperature

• The measure of average kinetic energy of all particles in an object.

• Condensation

• Anything that has mass and takes up space.

• Thermal Energy

• This process changes state from a gas to a liquid.

Tags

NGSS.MS-PS1-4

A solids particle arrangement comes in two forms, crystalline and amorphous.

What is the difference between them?

Crystalline example: quartz

Amorphous example: eraser

• Crystalline structures are made of unorganized molecules.

• Crystalline structures are made of specific, repeating molecules.

• Amorphous structures are made of unorganized molecules.

• Amorphous structures are made of specific, repeating molecules.

Tags

NGSS.MS-PS1-1

What is the scientific phenomenon that allows a spider to walk on water?

• Viscosity

• Air bubbles

• Liquid molecules

• Surface tension

During evaporation, liquids vaporize only from the .............

• Bottom

• Surface

• Middle

• All throughout

What phase change is the icicle going through?

• Vaporization

• Freezing

• Melting

• Boiling

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What phase change is showing in the image?

• Evaporation

• Sublimation

• Condensation

• Melting

Tags

NGSS.MS-PS1-4

When a solid ​ (a)   , thermal energy is ​ (b)   from the solid.

• removed
• added
• melts
• stays the same

Tags

NGSS.MS-PS1-4

Which of the following is NOT true about how gas molecules behave?

• Particles are not attracted to each other.

• Particles are in constant, random motion

• Particles collide with other particles only.

• Particles collide with other particles, other objects, and the walls of their container.

Tags

NGSS.MS-PS2-1

Which liquid would have the highest viscosity?

• Water

• Soda

• Vinegar

• Honey