Flashcards in Chapter 11 Deck (47)
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What is a bi-metal strip?
2 different metals fused together. The metals expand at different rates, so they fuse/bend.
*thermostats use these
- furnance is on when Hg is on the right side
- it's shut off when it's on the left side.
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_______: 2 different metals fused together. The metals expand at different rates, so they fuse/bend.
*thermostats use these
- furnance is on when Hg is on the right side
- it's shut off when it's on the left side.
Bi-metal strip
2
BI- METAL STRIP: 2 different metals ______. The metals expand at different rates, so they fuse/bend.
*thermostats use these
- furnance is on when Hg is on the right side
- it's shut off when it's on the left side.
Fuse together
3
BI-METAL STRIP: 2 different metals FUSE TOGETHER. The metals expand at different rates, so they fuse/bend.
*_______use these
- furnance is on when Hg is on the ____
- it's shut off when it's on the ____
Thermostats
Right side
Left side
4
BI-METAL STRIP: 2 different metals fused together. The metals expand at different rates, so they _______
*thermostats use these
- furnance is on when Hg is on the right side
- it's shut off when it's on the left side.
Fuse/bend
5
________: don't exist unless they're ions because they have 1 extra electron.
Alkali metals
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ALKALI METALS: don't exist unless they're _____ because they have 1 extra electron.
Ions
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_______________
- electrodes
- Na+ give off quanta in yellow spectra : this is why they're yellow lights
- yellow street lights are better than white because the human eye sees yellow/green light best
-uses less electricity. Produces more light
Sodium vapor lamps
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_______
Uses:
1.)medicine: LiCl (Lithium Chloride)
-used for mental/ bipolar/ manic symptoms.
How it works: Li+ replaces K+; Li+ does not transmit nerve signals as well/quickly as K+.
-patient compliance is essential
2.) aircraft bodies
-lithium/ aluminum alloys produce lightweight metals
Lithium
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LITHIUM
Uses:
1.)_________: LiCl (Lithium Chloride)
-used for mental/ bipolar/ manic symptoms.
How it works: Li+ replaces K+; Li+ does not transmit nerve signals as well/quickly as K+.
-patient compliance is essential
2.) ______
-lithium/ aluminum alloys produce lightweight metals
Medicine
Aircraft bodies
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LITHIUM
Uses:
1.)medicine: _______________
-used for ____/ bipolar/ manic symptoms.
How it works: Li+ replaces K+; Li+ does not transmit nerve signals as well/quickly as K+.
-patient compliance is essential
2.) ________
-lithium/ aluminum alloys produce _______
LiCl (Lithium Chloride)
Mental
Aircraft bodies
Lightweight metals
11
Coke and charcoal both include ______
Carbon
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____:coal burned without oxygen
Coke
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_______:wood burned without oxygen
Charcoal
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______:large chunks of iron.
Brittle cracks easily
Pig iron
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____:react with and remove impurities
CaCO3
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Iron----> __
Steel
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Steel= _____+____
Iron
Carbon
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Steel= iron+carbon
-the more _____ the harder the steel is
- 0.2% carbon = mild/soft steel
Uses: I-beams, drill bits
Carbon
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Steel= iron+carbon
-the more carbon the harder the steel is
- 0.2% carbon = mild/soft steel
Uses: _________,_______
I-beams
Drill bits
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______: a mixture of 2 or more metals melted together
Alloy
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________: (softening) - heated up; cooled slowly
Annealing
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____: cold working/cold rolling.
-pound steel (cold) into a new shape.
-put stress into steel
-HEAT TREATING: Heat up and cool rapidly
-SURFACE HARDENING: pure carbon onto surface of steel (cause hardening)
Hardening
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HARDENING: cold working/cold rolling.
-pound steel (cold) into a new shape.
-put stress into steel
- ___________:Heat up and cool rapidly
-____________:pure carbon onto surface of steel (cause hardening)
Heat treating
Surface hardening
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______: copper + zinc
Brass
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_____: copper + tin
Bronze
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Brass: ______+______
Copper
Zinc
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bronze: ____+ _____
Copper
Tin
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What are the 3 precious metals?
Silver
Gold
Platinum
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