Crystal Systems

Which of the following describes a crystal?

• A homogeneous solid

• has a geometrically regular form

• has a highly ordered microscopic structure

• All of the options describe crystals

How does an ionic bond form?

• One atom gives an electron to another atom

• Atoms share electrons

• The electrons form a "sea of electrons"

How does a covalent bond form?

• One atom gives an electron to another atom

• Atoms share electrons

• The electrons form a "sea of electrons"

Tags

NGSS.HS-PS1-1

How does a metallic bond form?

• One atom gives an electron to another atom

• Atoms share electrons

• The electrons form a "sea of electrons"

__________ is the manner in which atoms, ions, or molecules are spatially arranged.

• Pattern

• Ionic bond

• Crystal structure

• Molecular formula

Tags

NGSS.HS-PS1-3

What is the small repeating entity of the atom structure?

• Crystal lattice

• Unit cell

• Crystal structure

• Shape

Multiple unit cells stacked together in an infinite 3D array of points makes up what?

• Unit cell

• Molecular formula

• Crystal lattice

• Ionic bond

Tags

NGSS.HS-PS1-3

This crystal system has the most symmetry: a=b=c and žα=β=γ=90°

• Isometric

• Monoclinic

• Tetrahedral

• Triclinic

The crystal in the image belongs to which crystal system?

• Triclinic

• Monoclinic

• Hexagonal

• Isometric

This crystal system has angles that all meet at ž90°, but one of the axes is not equal to the other 2: a=b≠c and žα=β=γ= 90°

• Hexagonal

• Isometric

• Tetragonal

• Orthorhombic