Alloys Flashcards
1
Q
What is bronze made of?
A
Copper and tin
2
Q
What is brass made of?
A
Copper and zinc
3
Q
What is bronze used for?
A
Medals, decorative ornaments and statues
4
Q
What is brass used for?
A
Water taps and door fittings
5
Q
Why is brass used rather than bronze in lower friction situations?
A
More malleable
6
Q
Is bronze harder or softer than copper?
A
Harder
7
Q
What are gold alloys used for?
A
Jewellery
8
Q
What are aluminium alloys used to make?
A
Aircraft
9
Q
Why are gold alloys used to make jewellery?
A
Pure gold is very soft
10
Q
What metals are used to harden the gold?
A
Zinc, copper and silver
11
Q
Why is aluminium used for aircrafts?
A
Low density
12
Q
Why is pure aluminium not used in aircrafts?
A
Too soft
