9. Define alloy.
10. What is metalloid?
11. Name two organic acids.
12.State two uses of calcium carbonate.
13.Name two alloys.
Answers
Answer:
1.An alloy is an admixture of metals, or a metal combined with one or more other elements. For example, combining the metallic elements gold and copper produces red gold, gold and silver becomes white gold, and silver combined with copper produces sterling silver
2.A metalloid is a type of chemical element which has a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals. There is no standard definition of a metalloid and no complete agreement on which elements are metalloids.
3.lactic acid.
acetic acid.
4.Medicinally, it is used as an antacid or as a calcium supplement. It is also used as fillers in cosmetics. It is added to swimming pools as a disinfectant agent and as pH corrector. It finds extensive usage in the manufacturing industry as a building material (marble), ingredient for quick lime and cement.
5.Examples of alloys are steel, solder, brass, pewter, duralumin, bronze, and amalgams.
Answer:
what is metalloid
answer : A metalloid is a type of chemical element which has a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals. There is no standard definition of a metalloid and no complete agreement on which elements are metalloids.
Name two organic acids
answer : lactic acid.
acetic acid.
formic acid.
citric acid.
State two use of calcium carbonate
answer : Medicinally, it is used as an antacid or as a calcium supplement. It is also used as fillers in cosmetics. It is added to swimming pools as a disinfectant agent and as pH corrector. It finds extensive usage in the manufacturing industry as a building material (marble), ingredient for quick lime and cement
Name two alloys
answer: One of the first alloys made by humans was bronze, which is a mixture of the metals tin and copper. ... Alloy steels can be made by adding other elements, such as chromium, molybdenum, vanadium or nickel, resulting in alloys such as high-speed steel or tool steel.