Page 228 - Science Course 3 (Book 1)
P. 228
Mo6-L2: What is Glass and Its Uses? Mo6-L2b: What are Ceramics and Plastics?
Key Concept Mo6-L2b What are Ceramics and Plastics?
What is Glass and Its Uses?
KEY CONCEPTS:
Compare and contrast architectural glass and 1. What are ceramics and their uses?
borosilicate glass. 2. What are plastics and their uses?
Vocabulary A-Z
Let us learn some vocabulary
ceramics
are usually made from clay material which tends to
be hard, corrosion-resistant and brittle.
opaque
does now allow light to pass through; not able to be
seen through.
SUMMARY
What is Glass and Its Uses?
Glass is a sold material that is hard and
brittle (breaks easily when bent).
It is made by fusing sand with soda, lime,
and sometimes other ingredients and cooling
rapidly.
plastics
a synthetic material made from a wide range of
organic polymers, usually petroleum, that can be
molded into shapes.
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