Ceramics/Glass

The melting point of a ceramic is typically ____________ or lower than that of a metal.

• higher
• lower

Traditional ceramics(not glass) are typically made from ...

• metals in the earth's crust
• the hydration of sand particles
• combining clays and other minerals from the ground
• baking tree leaves in the sun

Tags

NGSS.MS-PS1-4

Which of the following is NOT a ceramic or glass?

• floor tile

• 2L bottle

• cement

• brick

In the 1870's, a specialized ceramic material was developed. It was used to withstand extremely high heats. This type of ceramic is often used in the lining of furnaces.  It is called a/an________________ material

• refractory
• boron nitride 
• thermal resistor
• flux

Which of the following is a difference between ceramics and metals?

• ceramics are good conductors of heat and metals are poor conductors of heat
• ceramics are workable and metals are brittle
• ceramics have ionic bonding and metals have metallic bonding 
• ceramics are crystalline and metals are amorphous

The crystalline structure of ceramics causes ceramics to _______________

• be brittle
• be resistant to corrosion
• be good insulators
• have high melting points

Tags

NGSS.HS-PS2-6

When I tried to melt the aluminum wire in class, why did it not drip onto the counter?

• because metals have too high of a melt point for me to melt with a propane torch
• because a ceramic formed on the outise which encased the molten aluminum and b/c they have high melting pts it never melted 
• because aluminum conducts heat too well that it dispersed through the entire wire 
• because I was tricking you and it really was a titanium wire

What is the main ingredient in glass?

• soda ash
• limestone
• borax
• silica

Silica is the made of what 2 elements?

• silicon and sulfur
• sulfur and carbon
• carbon and oxygen
• silicon and oxygen 

Silica in amorphous form makes glass but silica in crystalline form makes ...

• emeralds
• quartz
• alumina
• granite