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Worksheetsredox 2
Total questions: 24
Worksheet time: 30mins
Pengoksidaan ialah _________ elektron.
Oxidation is the _________ of electrons.
loss / derma
gain / terima
sharing / berkongsi
transfer / pindah
Penurunan ialah ____________ elektron.
Reduction is the ___________ of electrons.
loss / derma
gain / terima
sharing / berkongsi
transfer / pindah
Penerimaan hidrogen ialah contoh bagi ......
Gaining hydrogen is an example of...
pengoksidaan/ oxidation
penurunan / reduction
Penerimaan oksigen ialah contoh bagi ......
Gaining oxygen is an example of...
pengoksidaa / oxidation
penurunan / reduction
Unsur manakah dioksidakan dalam tindak balas ..
Which element is oxidised in the reaction ..
Zn + 2HCl → ZnCl2 + H2
Zinc
Hydrogen
Chlorine
None
Penurunan berlaku pada ...
Reduction happens at the
anod / anode
katod / cathode
titian garam/ salt bridge
voltmeter
Eloktrod yang kehilangan jisim ..
This electrode loses mass
anod/ anode
katod / cathode
Adakah kalsium dioksida atau diturunkan dalam tindak balas berikut ..
Is calcium oxidized or reduced in the following reaction?
2 CaO--> 2 Ca + O2
dioksida / Oxidized
diturun / Reduced
Yang manakah antara persamaan setengah berikut mewakili persamaan setengah bagi penurunan ?
Which of the following half reactions correctly represents a reduction half reaction?
Fe →Fe2+ + 2e-
Pb4+ + 2e- →Pb2+
2O-2 →O2 + 4e-
Fe + 3e- →Fe3+
Penukaran tenaga manakah yang ditunjukkan di bawah berlaku dalam sel voltan?
Which energy conversion shown below takes place in a voltaic cell?
Elektrik kepada kimia/
Electrical to chemical
Mekanik kepada kimia /
Mechanical to chemical
Mekanik kepada elektrik/
Mechanical to electrical
Kimia kepada elektrik/
Chemical to electrical
Dalam sel voltan, ion-ion bergerak melalui
In a voltaic cell the ions flow through the
wayar / wire
titian garam/ salt bridge
Apakah yang berlaku pada katod sel elektrolisis ?
What occurs at the cathode in an electrolytic cell?
pengoksidaan/ oxidation
penurunan/ reduction
Dalam tidak balas di bawah, kalsium di__
In the reaction
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
Diturunkan / Reduced
Sintesis / Synthesized
Dioksidakan / Oxidized
Tiada yang di atas / None of the above
Unsur manakah dioksidakan?
Which element is oxidized?
H2S + Cl2 → 2HCl + S
H2S
S
Cl
Bukan tindak balas redoks /
Not a redox reaction
Bahan yang mengoksidakan bahan lain dengan menerima elektron
Substance that oxidizes another substance by accepting its electrons.
agen penurunan/ reducing agent
nombor pengoksidaan / oxidation number
ketidakseimbangan / disproportionation
agen pengoksidaan / oxidizing agent
Apakah nama IUPAC dan nombor pengoksidaan bagi unsur kuprum dalam sebatian Cu2O ?
What is the IUPAC name and oxidation number of copper element in the compound Cu2O?
kuprum(I)oksida / Copper(I) oxide; +1
kuprum(I)oksida/ Copper(I) oxide; +2
kuprum(II)oksida/ Copper(II) oxide; +1
kuprum(II)oksida/ Copper(II) oxide; +2
Persamaan manakah mewakili tindak balas redoks?
Which equation represents a redox reaction?
NaOH + HNO3 → NaNO3 +H2O
2AgNO3 + Zn → Zn(NO3)2 + 2Ag
2NaCl + Pb(NO3)2 → PbCl2 + 2NaNO3
CaCO3 + 2HCl → CaCl2 + H2O + CO2
Apakah nombor pengoksidaan bagi X dalam XO4?
What is the oxidation number of X in XO4-?
+4
+5
+7
+8
Apakah nombor pengoksidaan Cr dalam Cr2O72- ?
What is oxidation number of Cr in Cr2O72-?
-2
+2
+6
+12
Apakah nombor pengoksidaan Fe dalam FeO?
What is oxidation number of Fe in FeO ?
+2
-2
0
+1
Jika dalam suatu tindak balas, kuprum diturunkan, bilangan elektronnya :
If in a reaction, copper is reduced; its number of electrons has:
bertambah/ Increased
berkurang/ Decreased
tidakberubah/ Remained Constant
berbeza secara rawak/ Varies Randomly
Jika suatu atom kehilangan elektron semasa tindak balas kimia , atom tersebut telah :
If an atom loses electrons during a chemical reaction, the atom was:
dioksidakan/ Oxidized
diturunkan/ Reduced
dineutralkan/ Neutralized
dimendakkan/ Precipitated
Dalam tindak balas di bawah, unsur manakah, jika ada telah dioksidakan?
In the reaction Zn + H2O --> ZnO2 + H2
which element, if any, is oxidized?
Zinc
Hydrogen
Oxygen
None
Nama lain bagi 'pengoksidaan-penurunan' ialah
Another name for a "oxidation-reduction" reaction is
tindak balas kimia/ chemical reaction
tindak balas peneutralan/ neutralization reaction
tindak balas redoks/ redox reaction
tindak balas nuklear/ nuclear reaction
