Abeka 8th Grade Science, Section 3.2 Review

List and define the three steps used in metallurgy.

(1) extraction - removal of ore from the earth, (2) refining - removal of impurities, and (3) shaping - forming purified ore into the desired object

Explain the difference between synthetic and simulant gemstones.

Synthetic gemstones are manmade but identical in appearance and chemical content to their natural counterparts. Simulant gemstones look like natural gemstone but have different chemical and physical properties.

What lightweight, useful metal is extracted from the rock bauxite?

aluminum

List the 4 Cs of a diamond.

carat weight, clarity, color, cut

What term describes any mineral containing a valuable metallic element?

ore

What two precious stones are forms of corundum?

ruby, sapphire

What is the difference between precious and semiprecious stones?

semiprecious stones are not as rare, durable, or esteemed as precious stones

What alloy is made of iron and carbon?

steel