Question

Brass and bronze are classed as "alloys." Which two metals make up these alloys, and generally what is the percentage of each?

a) Brass: Copper and Zinc (70-30); Bronze: Copper and Tin (90-10)
b) Brass: Copper and Nickel (60-40); Bronze: Copper and Aluminum (80-20)
c) Brass: Copper and Iron (50-50); Bronze: Copper and Lead (85-15)
d) Brass: Copper and Chromium (75-25); Bronze: Copper and Zinc (95-5)

Answer 1

Brass is an alloy of copper and zinc with a general composition of 70-30, while bronze is an alloy of copper and tin with a typical composition of 90-10 (option a).

Step-by-step explanation:

Brass and bronze are both alloys that are combinations of two primary metals. For brass, the primary metals are copper and zinc, typically in a percentage of around 70% copper and 30% zinc, though the exact ratio can vary depending on the type of brass. On the other hand, bronze is primarily an alloy of copper and tin, typically in a ratio of around 90% copper to 10% tin, although, like brass, this ratio can vary with different types of bronze.

The correct answer to the question of which two metals make up these alloys and generally what is the percentage of each is: a) Brass: Copper and Zinc (70-30); Bronze: Copper and Tin (90-10).