Question

Write the elements that made the following alloys

a) Brass ………………………………………………………………………………

b) Pewter ……………………………………………………………………………

AND


Give three examples and suggest a reason why;

a)These metals can be found as native metals.

b)These metals cannot be found as a native metals.

Answer 1

Explanation:

which standard is this..?

Answer 2

Answer:

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.[1] It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure.

Pewter with little or no lead is of finer quality, and alloys that include antimony and bismuth are more durable and brighter of sheen. Modern pewter is about 91 percent tin, 7.5 percent antimony, and 1.5 percent copper; the absence of lead makes it safe to use for dishes and drinking vessels