Connections in Solids

What is the hardest natural material found on Earth?

• quartz

• graphite

• glass

• diamond

What natural material makes up the core of a pencil?

• coal

• graphite

• lead

• silicon

Which element makes up both diamond and graphite, just with the atoms arranged differently?

• nitrogen

• carbon

• lead

• silicon

Tags

NGSS.HS-PS1-1

Glycogen is just a chain of ___

• water molecules

• DNA molecules

• glucose molecules

• protein molecules

Tags

NGSS.HS-LS1-6

Network solids are one of the three types of ___

• amorphous solid

• ionic solid

• atomic solid

• molecular solid

Tags

NGSS.HS-PS1-3

A solid where each atom is covalently bonded to several others in various directions is classified as ___

• a mesh solid

• a network solid

• a nexus solid

• a tesselation solid

Tags

NGSS.HS-PS1-3

The concept of mixing atomic orbitals into new orbitals suitable to form chemical bonds is called ___

• crossbreeding

• amalgamation

• hybridization

• half-breeding

In graphite, the outer electrons of each carbon atom are arranged into what type of hybridized orbitals?

• sp

• sp²

• sp³

• sp⁴

Tags

NGSS.HS-PS1-2

In graphite, the unhybridized p orbitals form an extensive network of ___

• pi bonds

• sigma bonds

• james bonds

• delta bonds

Tags

NGSS.HS-PS1-3

In graphite, the sheets are only held to other sheets with really weak ___

• dipole-dipole forces

• covalent bonds

• ionic bonds

• van der Waals forces