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Chemistry > Chapter 11 > Flashcards

Chapter 11 Flashcards

0
Q

_______: 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.
A

Bi-metal strip

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1
Q

What is a bi-metal strip?

A

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
Q

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.
A

Fuse together

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3
Q

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 ____
A

Thermostats
Right side
Left side

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4
Q

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.
A

Fuse/bend

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5
Q

________: don’t exist unless they’re ions because they have 1 extra electron.

A

Alkali metals

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6
Q

ALKALI METALS: don’t exist unless they’re _____ because they have 1 extra electron.

A

Ions

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7
Q

_______________

  • 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
A

Sodium vapor lamps

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8
Q

_______
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

A

Lithium

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9
Q

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

A

Medicine

Aircraft bodies

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10
Q 
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 \_\_\_\_\_\_\_
A

LiCl (Lithium Chloride)
Mental

Aircraft bodies
Lightweight metals

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11
Q

Coke and charcoal both include ______

A

Carbon

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12
Q

____:coal burned without oxygen

A

Coke

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13
Q

_______:wood burned without oxygen

A

Charcoal

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14
Q

______:large chunks of iron.

Brittle cracks easily

A

Pig iron

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15
Q

____:react with and remove impurities

A

CaCO3

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16
Q

Iron—-> __

A

Steel

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17
Q

Steel= _____+____

A

Iron

Carbon

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18
Q

Steel= iron+carbon
-the more _____ the harder the steel is
- 0.2% carbon = mild/soft steel
Uses: I-beams, drill bits

19
Q

Steel= iron+carbon
-the more carbon the harder the steel is
- 0.2% carbon = mild/soft steel
Uses: _________,_______

A

I-beams

Drill bits

20
Q

______: a mixture of 2 or more metals melted together

21
Q

________: (softening) - heated up; cooled slowly

22
Q

____: 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)
23
Q

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)
A

Heat treating

Surface hardening

24
Q

______: copper + zinc

25
Q

_____: copper + tin

26
Q

Brass: ______+______

A

Copper

Zinc

27
Q

bronze: ____+ _____

A

Copper

Tin

28
Q

What are the 3 precious metals?

A

Silver
Gold
Platinum

29
Q

What are the precious metals:silver, gold, platinum.

Characteristics?

A

Shiny
Durable
Malleable
Rare

30
Q

______________: rinse off rock, find/collect gold flakes.
Gold (Au) : is heavy so it falls into the grooves. The sand washes away.
Gold doesn’t TARNISH or OXIDIZE (valuable). It’s the most malleable metal.

A

Panning/sluicing

31
Q

PANNING/SLUICING : ______________________
Gold (Au) : is heavy so it falls into the grooves. The sand washes away.
Gold doesn’t ___ or ______ (valuable). It’s the most malleable metal.

A

Rinse off rock, find/collect gold flakes
Tarnish
Oxidize

32
Q

__________:au- pounded into thin layers only a few atoms thick.
-squares packed in tissue paper. Used by sign makers.

33
Q

GOLD LEAF: au- pounded into ______only a few atoms thick.

-squares packed in tissue paper. Used by SIGN MAKERS

A

Thin layers

34
Q

_______: 24K = 100% gold (for selling)
-can be mixed with other metals to harden it.
Ex: Ni
-good conductor because it won’t OXIDIZE

35
Q

CARATS : ____ = 100% gold (for selling)
-can be mixed with other metals to HARDEN IT
Ex: Ni
-good conductor because it won’t OXIDIZE

36
Q

______: excellent conductor of electricity

  • malleable
  • backs up $currency$
  • fillings in teeth- amalgam: silver & Mercury
37
Q

SILVER: excellent conductor of electricity

  • malleable
  • backs up ________
  • fillings in teeth- _______: ______& ______
A

Currency
Amalgam
Silver
Mercury

38
Q

_________: “white gold”

  • catalytic converters
    • gases make platinum wire glow hot
    • less pollution-lower emission
39
Q

PLATINUM:_________

  • ______________
    • gases make platinum wire glow hot
    • LESS POLLUTION-LOWER EMISSION
A

White gold

Catalytic converters

40
Q

_________: 7.5% of the earth’s crust

- found in Bauxite

41
Q

ALUMINUM: ____% of the earth’s crust

- found in _______

A

7.5%

Bauxite

42
Q

_____: (Pb)- large/heavy atom

Source: breakdown of radioactive isotopes-Uranium

43
Q

LEAD (Pb)- _____________

The source of lead is the breakdown of radioactive

A

Large/heavy atom

44
Q

LEAD (Pb)- LARGE/HEAVY ATOM
The source of lead is the ____________________
URANIUM FUEL: depleted uranium –> old - metals
Armor, bullets, machine gas

A

Breakdown of radioactive isotopes-uranium

45
Q

_________:depleted uranium —> old-metals

Armor, bullets, machine gas

A

Uranium fuel

46
Q

Uranium fuel……

A

Depleted uranium—> old-metals

Armor, bullets, machine gas

Chemistry (29 decks)

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