Inorganic material that has a characteristic chemical composition and specific crystal structure. Ore is a deposit in Earth’s crust of one or more valuable minerals. The most valuable ore deposits contain metals crucial to industry and trade, ...
Aluminum (Al), also spelled aluminium, chemical element, a lightweight silvery white metal of main Group 13 (IIIa, or boron group) of the periodic table. Aluminum is the most abundant metallic element in Earth’s crust ...
Aluminum (Al), also spelled aluminium, chemical element, a lightweight silvery white metal of main Group 13 (IIIa, or boron group) of the periodic table. Aluminum is the most abundant metallic element in Earth’s crust ...
Inorganic material that has a characteristic chemical composition and specific crystal structure. Ore is a deposit in Earth’s crust of one or more valuable minerals. The most valuable ore deposits contain metals crucial to industry and trade, ...
Class C: Heavy, Sticky Oils. Class C oils are characteristical: viscous, sticky or tarry, and brown or black. Flushing with water will not readily remove this material ...