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IGCSE STUDYING > Chemical final grade nine reveiw > Flashcards

Chemical final grade nine reveiw Flashcards

1
Q

how to calculate the concentration

A

1work out the chemical formula of the solute
2 work out the mass of one mole of the solute
3 work out how many moles are in a given mass
4 convert the amount of moles in a given volume(the solvent) to 1,000 cm (1 dm)

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2
Q

Concentration units

A

mol/dm squared

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3
Q

what do acids do with their protons

A

donate them in reactions

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4
Q

What can aluminum and zinc do with reactions of bases

A

they can neutralize both acids and bases

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5
Q

what is one mole of gas at room temprature

A

24,000 cm2

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6
Q

what is a mole

A

is the mass of a substance that contains 6.02 times 10 to the 23rd power atoms/molecules of that substance

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7
Q

why can carbon dioxide be collected by downward displacement

A

becuase C02 is denser than the air around it

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8
Q

why can C02 be collected by displacement of water

A

C02 has very low solubility so it will not dissolve in the water

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9
Q

what are metal oxides at room temprature

A

solids

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10
Q

are metal oxides bases or acids

A

bases,when the dissolve they form a alkali solution

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11
Q

what is Mg0

A

a white powder

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12
Q

what is being bonded in covalent bonding

A

two non metals

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13
Q

what is being bonded in ionic bonding

A

a metal and a non metal

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14
Q

what is ionic bonding melting an boiling points

A

high

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15
Q

what is ionic bonding solubility in water

A

some

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16
Q

what is ionic bonding conductivity as a solid

A

no

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17
Q

what is ionic bonding conductivity in a solution

A

yes

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18
Q

what is giant covalent bonding conductivity in a solution

A

no

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19
Q

what is covalent bonding conductivity in a solution

A

no

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20
Q

what is metallic bonding conductivity in a solution

A

no

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21
Q

what is giant covalent bonding conductivity as a solid

A

no,except graphite

22
Q

what is covalent bonding conductivity as a solid

A

no

23
Q

what is metalic bonding conductivity as a solid

A

it can

24
Q

what is giant covalent bonding melting an boiling points

A

high

25
Q

what is covalent bonding melting an boiling points

A

low

26
Q

what is metalic bonding melting an boiling points

A

high

27
Q

what is giant covalent bonding solubility in water

A

no

28
Q

what is covalent bonding solubility in water

A

no

29
Q

what is metallic bonding solubility in water

A

no

30
Q

what is the relative mass of a proton

A

1

31
Q

what is the relative mass of a neutron

A

1

32
Q

what is the relative charge of proton

A

+1

33
Q

what is the relative charge of a neutron

A

0

34
Q

what is the relative mass of a electron

A

2,000

35
Q

what is the relative charge of a electron

A

-1

36
Q

how to separate a insoluble solid and a liquid

A

filtration

37
Q

how to separate a souble solid and a liquid (when liquid not required)

A

evaportation

38
Q

how to separate a soluble solid and a liquid(when liquid is required)

A

simple distillation

39
Q

how to separate immisicble liquids

A

seperating funnel

40
Q

how to seperare misicble lquids(with diffrent boiling points)

A

fractal distillation

41
Q

how to separate miscible liquids (on the basis of solubility)

A

paper cromatogrphy

42
Q

what is the relation in oxygen particles between sulfate and sulfite

A

sulfate will always have one more oxygen particle then sulfite (sulfate usually is 3 oxygen sulfide is usually 2 oxygen)

43
Q

what will the suffix be on the ion if it is monotomic

A

-ide

44
Q

what 2 metals do brass contain

A

zinc and copper

45
Q

why are alloies stronger than pure metals

A

the different sizes of atoms in the metals mean that the atoms are no longer aligned in rows and will no longer slide over one another

46
Q

what does electrolysis mean/do

A

splits up ionic molecules with electricty

47
Q

what is the negative pole called in an electrolysis experiment

A

cathode

48
Q

what is the postive pole called in an electrolysis experiment

A

anode

49
Q

what happens to the metals in electrolysis reactions

A

They gain electrons and form a solid layer on the bottom of the solution

50
Q

what happens to the non-metals in electrolysis reactions

A

they lose electrons and become gasses and bubble

IGCSE STUDYING (26 decks)

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