Crystals TEST ASM

What is a crystal?

• A pure material that can’t be changed.

• Material with a regular,repeating arrangement of atoms.

• A foggy like material.

Tags

NGSS.MS-PS1-1

What is crystallography?

• Study of cells

• Study of earth

• Study of oceans

• Study of crystals

What state or phase of material are crystals?

• Gas

• Plasma

• Liquid

• Solid

What is crystallization?

• When crystals dissolve in a solution.

• When crystals melt into liquid.

• The formation of crystals

Which of the following is a way that crystals can form ?

• When liquids cool and start to harden.

• As precipitates in a chemical reaction.

• When water evaporates from a solution (supersaturated).

• All of the above.

Characteristic observed without changing the identity of the material

• luster
• color
• physical property
• specific gravity

Allotropy is

• when more than one crystal structure is found in elemental solids

• when metals and nonmetals have more than one crystal structure

When compounds (like chocolate) have more than one crystal structure

• Polymorphism

• Allotropy

the result when the periodic and repeated arrangement of atoms is perfect or extends throughout the entirety of the specimen without interruption

• single crystal

• polycrystalline

What crystal structure is this?

• Hexagonal

• Tetragonal

• Simple Cubic

• Triclinic