Final answer:
PYREX® glass is a type of borosilicate glass that can be used for heating. It is not a metal, but it is designed to be heat-resistant by including borates in its composition.
Step-by-step explanation:
PYREX® glass is a type of borosilicate glass that is commonly used in laboratory glassware and household cookware. This type of glass is resistant to high temperatures and does not break when heated, which makes it suitable for heating purposes. Although glass is not a metal, PYREX® glass is designed to be heat-resistant due to the inclusion of borates in its composition, which helps mediate the effects of thermal expansion and contraction. This reduces the likelihood of thermal shock.