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Chemistry > Random Shit > Flashcards

Random Shit Flashcards

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1
Q

What is bioleaching??

A

Using bacteria to show a solution containing copper ions from waste copper.

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2
Q

What is phytomining?

A

Using plants to absorb copper ions from low-grade ores plant are then burned and copper is extracted from ash.

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3
Q

What do metals combine to form?

A

A giant metallic lattice of positive metal ions. They conduct electricity as they are free to carry a charge .

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4
Q

How to calculate moles?

A

Mass / RFM

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5
Q

What colour precipitate is chloride ions

A

White

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6
Q

What colour is bromide ions?

A

Cream

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7
Q

What colour is iodide ions?

A

Yellow

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8
Q

Test for oxygen? Result?

A

Place a glowing splint in the gas , result is it relights

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9
Q

Test for hydrogen and result?

A

Place a burning splint in the gas. Result is a squeaky pop sound

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10
Q

Test for carbon dioxide? Result?

A

Bubble had through limewater, result is cloudy

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11
Q

Test for chlorine ?? Result?

A

Insert damp blue litmus paper and result is it should bleach (white)

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12
Q

In a flame spectrum , if the light is more intense what does it show?

A

The higher the concentration of the ions

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13
Q

Equation for percentage yield?

A

Actual yield x 100

—

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14
Q

Equation for atom economy?

A

RFM of useful product

—

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15
Q

Convert cm^3 into dm ^3

A

/1000

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16
Q

Ionic bonding is the bonding between what?

A

A non metal and a metal

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17
Q

Why do ionic bonds have high melting and boiling points?

A

The bonds are so strong it takes a lot of energy to break the electrostatic fusion.

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18
Q

What is metallic bonding between?

A

A metal and a metal

19
Q

What does metallic bonding form?

A

A delocalised sea of electrons, holding the positive ions together.

20
Q

Why can metals be shaped?

A

The layers can easily slide over eachother .

21
Q

What bonds in covalent bonding

A

Non metal and non metal

22
Q

Why does graphite conduct electricity but diamond doesn’t?

A

Graphite has delocalised everyone in the layers whereas in diamond it has no charges particles.

23
Q

What is a hydrocarbon?

A

Compounds that only contain hydrogen and carbon.

24
Q

How is crude oil formed?

A

When animals and plants decompose and are decompressed at high temperatures and pressure under layers of rock.

25
Q

Formula for methane?

A

CH4

26
Q

Formula for ethane?

A

C2H6

27
Q

Formula for propane?

A

C3H8

28
Q

Formula for butane?

A

C4H10

29
Q

In fractional distillation? Which hydrocarbons go to the bottom?

A

Longer hydrocarbons because they have a higher boiling point so they condensed into gases.

30
Q

The longer the hydrocarbon chain….

A

The higher the boiling point
The less volatile it is (tendency to turn into a gas)
The more viscous it is(flows)
The less flammable it is

31
Q

Equation for regular combustion

A

Something + oxygen —> Co2 + water

32
Q

What is produced in incomplete combustion?

A

Carbon monoxide.

33
Q

State two things needed for cracking

A

High temperature and catalyst

34
Q

Formula for Alkene?

A

CnH2n

35
Q

What is a polymer?

A

A small reactive molecule made up of monomers. HAS A DOUBLE BOND

36
Q

What sign is for an alcohol?

A

OH

37
Q

What is the formula for methanol?

A

CH40

38
Q

Formula for Butanol?

A

C4H10O

39
Q

What does thermoset mean?

A

Won’t change shape.

40
Q

What does thermo softening mean

A

Bonds can be easily broken making it easier to soften.

41
Q

What is the formula for carboxylic acids?

A

COOH

42
Q

Formula for propanoic acid?

A

CH3CH2COOH

43
Q

Formula for butanoic acid?

A

CH3CH2CH2COOH

44
Q

Are carboxlyic acids strong or weak

A

Weak

Chemistry (3 decks)

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