Crash Course Chemistry Silicon

Which location in California is known as the birthplace of modern computing?

• Germanium Gorge

• Tin Basin

• Carbon Canyon

• Silicon Valley

What is the most abundant element in the Earth's crust?

• oxygen

• silicon

• sand

• iron

Tags

NGSS.HS-PS1-1

Oxides of silicon, which make up sand, are known as ___

• silicates

• silicones

• silox

• salicylic acids

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

What is the chemical formula of silica?

• SiO

• SiO₂

• Si₂O₅

• Si₂O

Like graphite and diamond, silicon and it's oxides are classified as what type of solids?

• group 18 solids

• molecular solids

• ionic solids

• network solids

The silica structure, with a silica atom bonded to four oxygen atoms, is based on what molecular geometry?

• trigonal planar

• tetrahedral arrangement

• trigonal bipyramidal

• octahedral arrangement

In silica, each silicon is bonded to four oxygens, while each oxygen is bonded to ___

• one silicon

• two silicons

• three silicons

• four silicons

Tags

NGSS.HS-PS1-3

Ceramics, and other clays, are formed from silica sheets that dry to form composites that are ___

• extremely soft and heat conductive

• extremely hard and heat conductive

• extremely soft and heat resistant

• extremely hard and heat resistant

Tags

NGSS.HS-PS2-6

Glass, a three dimensional silicate, is classified as what type of solid?

• network solid

• ionic crystalline solid

• amorphous solid

• molecular crystalline solid

Which mineral is composed of silicon and oxygen atoms in a very regular and rigid structure?

• calcite

• dolomite

• quartz

• pyrite

Tags

NGSS.HS-PS1-2