Why does a pure metal tend to be soft?

Its identical atoms form regular layers that can slide over each other

Why is an alloy usually harder than the pure metal?

Different-sized atoms disrupt the layers so they cannot slide easily

The more reactive metal displaces the less reactive one

The blue colour fades and a red-brown coating forms on the nail

It loses electrons more readily to form ions

attaching a more reactive metal that corrodes instead of the iron

As reference points to compare with the metals

14questions. Pick an answer and you'll see why right away.

Which of these is a general physical property of metals?
Why does a pure metal tend to be soft?
Why is an alloy usually harder than the pure metal?
Which metal is the most reactive?
What happens when a more reactive metal is added to a solution of a less reactive metal's salt?
An iron nail is placed in blue copper(II) sulfate solution. What is observed?
Which method is used to extract a very reactive metal such as aluminium?
Which metal is extracted by reduction with carbon in the blast furnace?
Why is gold found uncombined in the ground?
Which two substances are needed for iron to rust?
Which of these prevents iron from rusting by acting as a barrier?
Why does a more reactive metal react more vigorously with dilute acid?
Sacrificial protection prevents rusting by
Where in the reactivity series are carbon and hydrogen usually placed?