Lesson One: Solids, Liquids, & Gases

Which of the following statements describe how particles in a solid behave?

• The move around freely.

• The vibrate in place.

• They are packed tightly together.

• They a packed but spread enough to flow around each other.

Which property of water allows water to be slightly filled above the rim without spilling over?

• surface tension

• viscosity

• solubility

• compression

Amorphous solids are solids that do not melt at specific melting points; they get softer as they are heated.

Crystalline solids are solids that have distinct melting points.

Which two are examples of amorphous solids?

• butter

• quartz

• crystals

• eraser

Tags

NGSS.MS-PS1-4

Why would a small tank of helium gas be able to fill so many balloons?

• The helium particles expands to fill its new containers, the balloons.

• The volume of gas in the balloons always equals the volume of gas in the tank.

• Helium mixes with air when it comes out of the tank, making more helium.

• Helium molecules are very small in size.

The particles in the image represent which state of matter and why?

• Gas; because they are moving slow.

• Liquid; because they are moving around fast.

• Solid; because they are packed tightly.

• Gas; because they are moving around fast.

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3

The particles in the image represent which state of matter and why?

• Solid; because they are tightly packed.

• Liquid; because they are tightly packed.

• Gas; because they vibrate in place.

• Liquid; because they are spaced and flow around each other.

Tags

NGSS.MS-PS1-4

The particles in the image represent which state of matter and why?

• Liquid; because they are very tightly packed.

• Gas; because they are moving freely.

• Liquid; because they are moving freely.

• Liquid; because they are loosely packed.

The black numbers on this clock have clear shapes and sizes. The state of matter is a liquid, which allows the numbers to keep changing shape as time changes.

Why do timers use a liquid instead of a solid or a gas?

• Liquids can flow smoothly and have a definite volume, so they move easily.
  
  

• Gas particles are too close together, so they wouldn’t move steadily.

• Solid particles can flow easily but are not able to move through the timer.

Which particles have a definite volume?

• solid

• gas

• liquid

• all of the above

Which of the following takes the shape of its container?

• gas

• solid

• liquid

• none of the above