Why is an alloy such as brass often used instead of pure copper?

It is harder, stronger and more corrosion resistant than pure copper

What happens to a thermoplastic when it is heated?

It softens so it can be reshaped and recycled

Ductility is drawing into wire; malleability is pressing into sheet

It sets permanently when first cured and resists heat

12questions. Pick an answer and you'll see why right away.

Which property is the ability of a material to resist scratching, denting and wear?
Which of these is a ferrous metal?
Why is an alloy such as brass often used instead of pure copper?
What happens to a thermoplastic when it is heated?
What are the two parts of a composite material?
Which smart material returns to a remembered shape when it is heated?
Which stimulus does a photochromic pigment respond to?
Which of these is a modern material rather than a smart material?
When selecting a material, which of these is a wider factor beyond its properties?
Which property would matter most for the base of a saucepan?
What is the difference between ductility and malleability?
Which statement about a thermosetting polymer is correct?