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14.2 Alloys
Lesson 14.3 Alloys
12-09-2022
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Lesson 14.3 Alloys
12-09-2022
Slide 1 - Tekstslide
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Slide 2 - Poll
REVIEW OF PREVIOUS
LESSON
Slide 3 - Tekstslide
describe an alloy ;
state the comparison of alloys and pure metals ;
describe the uses of alloys ;
identify representations of alloys from diagrams of structure ; and
explain in terms of structure how alloys can be harder and stronger.
I can...
Slide 4 - Tekstslide
Slide 5 - Video
_____ is mixture of two or more metals or metal with a non-metal such as carbon.
A
noble gas
B
alloy
C
mixture
D
heterogeneous
Slide 6 - Quizvraag
Which of the following properties DOES NOT describe an alloy?
A
more strength
B
harder than pure metal
C
low resistance to corrosion
D
withstand high temperature
Slide 7 - Quizvraag
Which is more useful?
A
alloys
B
pure metals
Slide 8 - Quizvraag
The regular arrangement of a metal ________ structure is distorted in alloys.
A
lattice
B
complex
C
simple
D
crystal
Slide 9 - Quizvraag
Which of the following alloys is a mixture of copper and zinc?
A
Brass
B
Stainless steel
C
Iron alloys
D
Aluminium alloys
Slide 10 - Quizvraag
Which of the following alloys is a mixture of iron and other elements like chromium, nickel, and carbon?
A
Brass
B
Stainless steel
C
Iron alloys
D
Aluminium alloys
Slide 11 - Quizvraag
Which special property of iron + tungsten iron has?
A
resistance to high temperature
B
resistance to high pressure
C
resistance to electricity
D
resistance to corrosion
Slide 12 - Quizvraag
Which alloy is resistant to corrosion?
A
iron + nickel
B
iron + copper
C
iron + chromium
D
A and C
Slide 13 - Quizvraag
Which of the following alloys is NOT stronger than other alloys but still has a low density and is used in aircrafts?
A
Al + Cu
B
Al + Mn
C
Al + Si
D
Al + Fe
Slide 14 - Quizvraag
Alloys are mixture of substances, they are chemically combined and an alloy is NOT a compound.
A
TRUE
B
FALSE
Slide 15 - Quizvraag
Alloys contain atoms of similar sizes, which distorts the normally regular arrangements of atoms in metals.
A
TRUE
B
FALSE
Slide 16 - Quizvraag
Cite ONE reason why alloys are stronger and much harder than pure metals. (Focus on particle structure.)
Slide 17 - Open vraag
Practice
12-09-2022
Slide 18 - Tekstslide
Rate your understanding of the topic using the scale below.
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Slide 19 - Poll
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