alloys

Question 1

define alloy

Answer 1

• a mixture of two or more elements at least one of which is a metal.

Question 2

examples of alloys

Answer 2

brass, steel, solder

Question 3

why is pure iron soft

Answer 3

in pure metal atoms are the same and arranged in closely packed layers - this regular arrangement allows atoms to slide over each other.

Question 4

properties of an alloy

Answer 4

• not an element
  -alloys are harder than pure metals
  -stronger than pure metals and more corrosion resistant.
• the atoms are different sizes- making it more difficult for layers to slide over each other making alloys harder