9.1 States of Matter

Rubber is considered an amorphous solid, because it does not melt at a distinct temperature.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

An amorphous solid has a definite melting point.

• True

• False

Both gases and liquids are fluids.

• True

• False

Tags

NGSS.MS-PS1-4

A(n) ______ will always take the shape and volume of its container.

• gas

• liquid

• solid

• crystal

Tags

NGSS.MS-PS1-4

What happens to the gas particles in an inflated ball when it gets a hole?

The gas particles inside the ball are at a ___________ pressure than the air outside the ball, so they hit the inner surface of the ball more often, reach the hole, and escape.

• Higher

• lower

• equal

A state of matter with a definite volume, but no definite shape is a(n) _______.

• liquid

• solid

• gas

Tags

NGSS.MS-PS3-4

The ____ of a gas is the force of its outward push divided by the area of the walls of its container.

• pressure

• gravity

• surface tension

• structure

All solids have a closely packed, fixed arrangement of particles.

• True

• False

The particles in liquids and gases are free to move while the particles in a solid have a fixed arrangement. This is why _____ take the shape of their containers while solids do not.

• liquids

• gases

• solids

• colors

Tags

NGSS.MS-PS1-4

Viscosity is the inward force among the molecules of a liquid.

• true

• false