KSSM_FORM 5_CHAPTER 6_SUB 6.2

Please choose the application of electrolysis in industries.

• extraction of metals

• purification of metals

• electroplating of metals

• wastewater treatment

Choose the characteristic of purification of metals process

• impure metal use as anode

• pure metal use as cathode

• anode will dissolve

• metal will deposit at the cathode

Choose the characteristics of metal electroplating :

• metal looks attractive

• metal withstand corrosion

• metals extracted form ores

• metal will dissolve

Choose the characteristics of wastewater treatment in electrocoagulation :

• involve electrolysis

• involve electroplating

• involve coagulation

• involve purification

Please state the the technique shown in figure above

• electroplating

• electrolysis

• electrocoagulation

• electrochemical

What is happening to anode ( aluminum electrode)?

• discharge

• ionize

• plating

• extracted

What is happening at cathode(carbon electrode)?

• aluminum ion discharge

• hydrogen ion discharge

• nothing happen

• cathode will dissolve

State 2 ways the pollutant being filtered from the wastewater?

• Flotation

• Dissolve

• Sedimentation

• Extraction

Please state the the technique shown in figure above

• electroplating

• purification of metal

• electrocoagulation

• electrochemical

Please state the the technique shown in figure above

• electroplating

• purification of metal

• electrocoagulation

• electrochemical