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Flashcards in Vw11 Deck (44)
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The process of obtaining metals
-___________
-pine oil in water
-minerals sink to oil and float to the top
- skim off the top

__________ (a chemical reaction)
-heat up
-melt according to density/melting point

_______
-melt in an electric furnace
-oxygen into liquid metal
-reacts with and removes impurities
- cooled and shaped

Flotation
Reduction
Refine

1

______
-extracting metals from their natural materials and preparing them for use
-minerals: rocks containing metals
-ore: the natural material from which the metal is extracted
-ex) BAUXITE (Al)
-

Metallurgy

2

___________
-don't exist unless they're ions.
- sodium vapor lamps : sodium atoms give off quanta in the yellow spectrum.

LITHIUM - Uses
- medicine
- aircraft bodies

CHARCOAL and COKE : both have carbon
CHARCOAL = wood burned without oxygen
COKE = charcoal burned without oxygen

STEEL = Carbon and Iron
- the more carbon, the harder the steel

ALLOY: a mixture of 2 or more metals melted together
ANNEALING (softening) : heated up and cooled slowly

HARDENING
- COOL WORKING/ ROLLING : pound steel into a new shape.
- HEAT TREATING : heat up and cool rapidly
- SURFACE HARDENING: put pure carbon onto surface of steel (CASE HARDENING)

BRASS = copper and zinc

BRONZE = copper and tin


Alkali metals

3

ALKALI METALS
-don't exist unless they're ____.
- ________: sodium atoms give off ___ in the yellow spectrum.

LITHIUM - Uses
- medicine
- aircraft bodies

CHARCOAL and COKE : both have carbon
CHARCOAL = wood burned without oxygen
COKE = charcoal burned without oxygen

STEEL = Carbon and Iron
- the more carbon, the harder the steel

ALLOY: a mixture of 2 or more metals melted together
ANNEALING (softening) : heated up and cooled slowly

HARDENING
- COOL WORKING/ ROLLING : pound steel into a new shape.
- HEAT TREATING : heat up and cool rapidly
- SURFACE HARDENING: put pure carbon onto surface of steel (CASE HARDENING)

BRASS = copper and zinc

BRONZE = copper and tin

ions
sodium vapor lamps
quanta

4

ALKALI METALS
-don't exist unless they're ions.
- sodium vapor lamps : sodium atoms give off quanta in the _____

______ - Uses
- medicine
- aircraft bodies

CHARCOAL and COKE : both have carbon
CHARCOAL = wood burned without oxygen
COKE = charcoal burned without oxygen

STEEL = Carbon and Iron
- the more carbon, the harder the steel

ALLOY: a mixture of 2 or more metals melted together
ANNEALING (softening) : heated up and cooled slowly

HARDENING
- COOL WORKING/ ROLLING : pound steel into a new shape.
- HEAT TREATING : heat up and cool rapidly
- SURFACE HARDENING: put pure carbon onto surface of steel (CASE HARDENING)

BRASS = copper and zinc

BRONZE = copper and tin

yellow spectrum
lithium

5

ALKALI METALS
-don't exist unless they're ions.
- sodium vapor lamps : sodium atoms give off quanta in the yellow spectrum.

LITHIUM - Uses
- medicine
- aircraft bodies

CHARCOAL and COKE : both have carbon
CHARCOAL = __ burned without oxygen
COKE = ____ burned without oxygen

STEEL = Carbon and Iron
- the more carbon, the harder the steel

ALLOY: a mixture of 2 or more metals melted together
ANNEALING (softening) : heated up and cooled slowly

HARDENING
- COOL WORKING/ ROLLING : pound steel into a new shape.
- HEAT TREATING : heat up and cool rapidly
- SURFACE HARDENING: put pure carbon onto surface of steel (CASE HARDENING)

BRASS = copper and zinc

BRONZE = copper and tin

wood
charcoal

6

ALKALI METALS

CHARCOAL and COKE : both have _____
CHARCOAL = wood burned without oxygen
COKE = charcoal burned without oxygen

carbon

7

ALKALI METALS

LITHIUM - Uses
- ____
- _______

medicine
aircraft bodies

8

____ = Carbon and Iron
- the more carbon, the harder it is

steel

9

______: a mixture of 2 or more metals melted together

alloy

10

steel = _____ and ____
the more ___ the harder it is

carbon
iron
carbon

11

____ (softening) : heated up and cooled slowly

annealing

12

HARDENING
- _______ : pound steel into a new shape.
- ______ : heat up and cool rapidly
- _______: put pure carbon onto surface of steel (CASE HARDENING)

cool working / rolling

heat treating

surface hardening

13

_____ = copper and zinc

brass

14

annealing (softening): ____ and ______

heated up
cooled slowly

15

________ = copper and tin

bronze

16

What are the characteristics of precious metals and what are the precious metals?

What are the precious metals?

shiny
durable
malleable
rare

gold, silver, and platinum

17

what are some ways to obtain the precious metals (gold, silver, and platinum)?

panning / sluicing

18

What is a measure of gold?

24K = 100%

19

GOLD
- KARATS - a measure of ...
- 24K = 100%
- good _____
- can be mixed with _____ to harden it

conductor
nickel

20

what 2 precious metals are good conductors?

silver
platinum

21

______
-lightweight and strong
- extracted from Bauxite
- used for cars, Alnico, thermite

aluminum

22

ALUMINUM
- _____ and ____
- extracted from BAUXITE
- used for cars, Alnico, thermite

lightweight
strong

23

ALUMINUM
- LIGHTWEIGHT and STRONG
- extracted from _____
- used for cars, Alnico, thermite

bauxite

24

ALUMINUM
- LIGHTWEIGHT and STRONG
- extracted from BAUXITE
- used for ___, ____ and __

cars
Alnico
thermite

25

______
-large / heavy atom
- from breakdown of URANIUM ISOTOPES

lead

26

LEAD
-________
- from breakdown of URANIUM ISOTOPES

large / heavy atom

27

LEAD
-large / heavy atom
- from breakdown of ________

uranium isotopes

28

_______
- rare
- lightweight and strong
- high melting point
- used for aircraft wings - SR- 71 Blackbird
- Brittle

Titanium

29

is titanium rare?

yes