9E - Making materials

How are ceramics made?

• By heating and cooling a substance
• By molding the substance
• Using gas and melting it
• By adding molecules together

What is the chemical compound that sand and quartz share as a primary constituent?

• Femur
• Ryan's Foot Fungus
• Silica Dioxide
• Polytetrafluoroethylene

Which is the most reactive?

• Iron
• Carbon
• Potassium
• Silver

What makes water?

• Zinc + oxygen
• Hydrogen and Oxygen
• Hydrogen acid
• Hydrogen+ zinc

Why do ceramics have such high melting points?

• Because they have a cubic structure and many atoms
• Because they have so many strongly bonded atoms in a repeated structure
• Because they have polymer molecular structure
• Because they have a lot of molecules and metals

What is a polymer?

• a combination of two materials with different physical and chemical properties
• a substance made up of a large number of smaller molecules that link together to form larger molecules.
• an inorganic non-metallic solid made up of either metal or non-metal compounds that have been shaped and then hardened by heating to high temperatures
• something made out of sand and aggregate

Which one of these polymers are not synthetic?

• Rubber
• Polyester
• Epoxy
• Teflon

what does brittle mean ?

• hard + breaks easily
• stretchy + moldable
• hard + unbreakable
• liquid

What is aggregate?

• Ryan's foot fungus
• Broken concrete, fragments of something.
• Concrete
• Rocks

What defines polymers?

• Molecules made of short chains, which contain repeated groups of atoms
• Molecules made of short chains, which contain random groups of atoms
• Molecules made of long chains, which contain repeated groups of atoms
• Molecules made of long chains, which contain random groups of atoms