Homework 7/18

Page 204 #7-13

7. An alloy is a solid combination of atoms of two or more metals and they also include some well-defined compounds.

8. Steel and Gold are alloys that I see daily. Steel is used to build cars, planes, and many other essential daily items. Gold is used in jewelry that is usually seen everyday.

9. Carbon is a component of both steel and stainless steel.

10. Alloy: Chromium Platinum

Formula: Cr3Pt

Use: Razor Blades

Physical Property: Hard and Sharp

11. Semiconductors are located in the middle of nonmetals and metals and they can be known as metalloids. They have characteristics of both metals and nonmetals.

12. -Phosphorus (P) 

-Arsenic (Ar)

-Aluminum (Al)  

-Gallium (Ga)

13. The main use is for computers to process information quickly and efficiently because of the integrated circuits used in most electronics.