Electrolysis

In the electrochemical series of common metals, the higher metals ionise to form:

• anion

• atom

• cathode

• cations

The strongest oxidising agent in the electrochemical series of non-metals is:

• bromine

• chlorine

• fluorine

• iodine

Which of the following are all anions?

• F^-, Na⁺, OH^-

• F^-, Cl^-, OH^-

• Mg²⁺, Na⁺, Ca²⁺

• F,Na⁺, OH^-

Which of the following are all cations?

• K⁺, K, K^-

• K⁺, Mg²⁺, Ca^2-

• K⁺, Mg²⁺, Ca²⁺

• K^-, Mg²⁺, Ca²⁺

Which substance conducts electricity?

• molten potassium iodide

• ethanol

• paraffin wax

• solid sodium chloride

Ethanoic acid is a:

• non-conductor

• non-electrolyte

• weak electrolyte

• strong electrolyte

Pure water is a:

• weak electrolyte

• strong electrolyte

• non-conductor

• non-electrolyte

Metallic conduction involves:

• mobile electrons

• mobile ions

• chemical change

• none of the above

Which of the following species would be attracted to the anode?

• H₂O

• Ca²⁺

• Cl^-

• NaCl

Which of the following species would be attarcted to the cathode?

• cations

• anions

• solid potassium iodide

• acid