Chapter 11 Flashcards
_______: 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
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.
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
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
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
________: don’t exist unless they’re ions because they have 1 extra electron.
Alkali metals
ALKALI METALS: don’t exist unless they’re _____ because they have 1 extra electron.
Ions
_______________
- 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
_______
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
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
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
Coke and charcoal both include ______
Carbon
____:coal burned without oxygen
Coke
_______:wood burned without oxygen
Charcoal
______:large chunks of iron.
Brittle cracks easily
Pig iron
____:react with and remove impurities
CaCO3
Iron—-> __
Steel
Steel= _____+____
Iron
Carbon
Steel= iron+carbon
-the more _____ the harder the steel is
- 0.2% carbon = mild/soft steel
Uses: I-beams, drill bits
Carbon
Steel= iron+carbon
-the more carbon the harder the steel is
- 0.2% carbon = mild/soft steel
Uses: _________,_______
I-beams
Drill bits
______: a mixture of 2 or more metals melted together
Alloy
________: (softening) - heated up; cooled slowly
Annealing
____: 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
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
