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PKSC1020 EXAM 2 Batt 2025 Questions and Answers Glass - ....ANSWER☑️☑️...-- One of the oldest packaging materials - 3000 BC - Non-Crystalline - Behavior of molecules suggest that it is viscous Sand - ....ANSWER☑️☑️...-Main structural component; Glass contains 70-75% of this: Soda Ash - ....ANSWER☑️☑️...-Reduces melting temp, Glass contains 12-15% of this: Limestone - ....ANSWER☑️☑️...-Improves hardness, Glass contains 8-10% of this 5% Other Materials in Glass - ....ANSWER☑️☑️...-Cullet; ~20% of total composition; broken, recycled glass; also reduces melting temp. Inert - ....ANSWER☑️☑️...-Glass is ________, meaning it does not react with the products inside of it. Minor Ingredients - ....ANSWER☑️☑️...-Alumina (increases hardness) Magnesium oxide (chemical durability) Coloring agents (Amber, Green) 2700 - 3000 F - ....ANSWER☑️☑️...-How hot a furnace can get for glass: FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 1