Friday March 19th Review crystals and amorphous solids

A crystal is a solid with...

• random arrangement of it's particles.

• regular and repeating patterns of it's particles.

An amorphous solid is a solid with...

• random arrangement of it's particles.

• regular and repeating patterns of it's particles.

This type of solid forms a regular repeating

three-dimensional structure called a crystal lattice. What type of solid is this?

• amorphous

• crystalline

• glass

• diamond

In amorphous solids, the atoms or molecules are held together in a completely random formation.

• true

• false

When the temperature of a substance is lowered, its particles

• vibrate more quickly

• stop vibrating completely

• escape the attractive forces of the other particles

• vibrate more slowly

Tags

NGSS.MS-PS1-4

The amount of energy needed to change a substance from the solid phase to the liquid phase is the substance's

• heat of vaporization

• heat of transformation

• melting point

• heat of fusion

Tags

NGSS.MS-PS1-4

Example for crystalline solid

• Glass

• Quartz

• Plastic

• Rubber

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

An amorphous solid has a definite melting point.

• True

• False

One major difference between crystalline and amorphous solids is that

• crystalline solids have a precise melting point.

• amorphous solids have a lattice structure.

• amorphous solids always behave consistently and uniformly.

• crystalline solids break unpredictably and can produce curved fragments.

Which image represents a compound?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1