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Chemistry > Unit 2 Section B > Flashcards

Unit 2 Section B Flashcards

0
Q

What name is given to a rock or mineral that we can recover a metal from

A

Ore

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1
Q

Which portion of our planet is the major supply house for the production of manufactured goods

A

Lithosphere or crust

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2
Q

The resources are fairly evenly distributed

A

False

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3
Q

The more land a country has the greater its supply

A

False

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4
Q

They are not evenly distributed

A

True

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5
Q

They are deep within the earth

A

False

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6
Q

Water, NaCl, Mg+2, S2-, Ca2+ are some of the resources present in which layer of our planet

A

Hydrosphere

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7
Q

Major layers of our planet

A

Atmosphere
Hydrosphere
Lithosphere

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8
Q

What term is five to a naturally occurring solid substance commonly removed from ores to obtain a particular element of interest or value

A

Mineral

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9
Q

Gases like nitrogen, oxygen, neon, and argon are some of the recourses present in which layer of our planet

A

Atmosphere

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10
Q

Factors to take in count when deciding whether to mine s specific ore over another

A
  • distance from mine to refinery
  • % of metal in the ore
  • type of mining and processing required
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11
Q

Why is copper the worlds most common metal used for electrical wiring

A

It’s ductile

Resistant to corrosion

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12
Q

We currently mine ores of copper that contain what % of copper

A

Less than 1%

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13
Q

In the lab converting copper, copper was heated until w black product was formed. How did the mass of the crucible contents change after heating ?

A

It increased

Oxygen in the air reacted with the copper to form the compound

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14
Q

A metal is usually obtained from its ore by this process

A

Reduction

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15
Q

Very reactive metals such as lithium potassium calcium magnesium and aluminum would most likely be obtained by this method

A

Electrolysis

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16
Q

Reduction is always accompanied by oxidation

A

True

17
Q

Reduction involves gaining of electrons

A

True

18
Q

Reduction is the process whereby metals rust

A

False

19
Q

Reduction of minerals often produces elemental metals

A

False

20
Q

People discover how to obtain iron from its ore at a much later date than they discovers how to obtain copper from its ore. What is the principle reason for this delay in discovering iron?

A

Iron is more reactive than copper and people at the time were not able to reach high enough temperature to separate it

21
Q

A strip of magnesium is placed into a water solution of Cu+2 ions. What happens?

A

It reacts.

Electrons move from magnesium to Cu2+

22
Q

What is the name given to the treatment of metals and their ores by heat, such as in a blast furnace.

A

Pyrometallurgy

23
Q

Which element is most likely to be most reactive

A

Lithium

24
Q

The fact copper is very ductile lets us make what thing from it

A

Wiring

25
Q

What happens in redox action

A

Oxidation and reduction

26
Q

Define the term ore

A

A mixture of compound found each that contain a desired metal within minerals and many compounds are useless to us.

27
Q

The more reactive metals are ____ to selerate from an ionic compound than the less reactive metals

A

Harder

28
Q

A metal reactivity series _____ help you to predict if reactions are likely to occur

A

Does

29
Q

A ______ active metal will replace a less active metal from its compound

A

More

30
Q

Reduction involves any process in which electrons are ____

A

Gained

31
Q

Hydro metallurgy involves the use of _____ to obtain metals from their ores

A

Water

32
Q

Obtaining a metal from its mineral requires the addition of _____ and a source of electrons

A

Energy

33
Q

Copper resources are ______ distributed throughout the world

A

Unevenly

34
Q

Lead ______ replace potassium in KNO3

A

Will not

35
Q

Calcium ______ replace silver in AgCl

A

Will

36
Q

MgCl2 is _____ to separate into ions than ZnCl2

A

Harder

37
Q

CuCl2 is _____ to separate into ions than NaCl

A

Easier

38
Q

How would you determine if a reaction will or will not take place

A

A more reactive metal will replace a less active metal from its compound

39
Q

Why were copper gold and silver among the first metallic elements discovered

A

They are both very unreactive so they were discovered in their free state

Chemistry (7 decks)

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