Question

glass makers and iron makers kept their knowledge of the production processes as family secrets.
true
false
question 14 (0.715 points)
craftsmen in egypt, china, mesopotamia and the indus valley civilization of modern-day pakistan and northwest india discovered that the addition of any of several naturally occurring materials known as ______ greatly lowered the temperature at which silicon dioxide became liquid
tuxes
fluxes
impurities
gold

Explanation:

Question (first part: True/False)

In historical contexts, glass and iron makers often guarded their production knowledge as family secrets to maintain a competitive edge and preserve their craft. This was common in pre - industrial and early industrial times.

Fluxes are substances used in metallurgy and glass - making to lower the melting point of materials (like silicon dioxide in glass - making). Tuxes is an incorrect term, impurities are unwanted substances, and gold is not used to lower the melting point of silicon dioxide in this context.

Answer:

True

Question 14 (fill - in - the - blank with options)