ATS KS4 Chemistry: Electrolysis

Describe oxidation in terms of electrons

• oxidation is gain of electrons
• oxidation is loss of electrons

Describe reduction in terms of electrons

• reduction is gain of electrons
• reduction is loss of electrons

Why can ionic compounds not conduct electricity when they are solid?

• their electrons are not free to move
• their ions are free to move
• their ions are not free to move
• their electrons are free to move

What type of charge does a metal ion have?

• +
• -

What type of charge does a non metal ion have?

• +
• -

What would the charges be on the ions that make up Al₂O₃?

• Al²⁺ and O^3-
• Al^2- and O³⁺
• Al³⁺ and O^2-
• Al^3- and O²⁺

What would the charges be on the ions that make up NaCl?

• Na⁺ and Cl^-
• Na^- and Cl⁺
• Na^₊ and Cl^_-

What is the name of the positive electrode?

• cathode
• anode

What is the name of the negative electrode?

• cathode
• anode

Finish the statement...."Opposites..."

• repel
• attract
• do nothing

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5