END OF YEAR QUIZ FOR 9SC1 CHEMISTRY

Electrolysis is the ..................... of an ionic compound, when molten or in aqueous solution, by the passage of an ................. current

• current, electricity

• decomposition, electricity

• ionic, electronic

• electrodes, electrolytes

Why is electrolysis important?

• it is simply to breakdown compounds

• it is to see how well ionic compounds break down

• it is used to extract pure elements from compounds

• it is used to extract compounds from pure elements

Tick the THREE MAIN parts of an electrolytic cell

• Electrolytic cell

• Battery

• Anode

• Electrodes

• Electrolyte

Answer explanation

Anodes and cathodes are the ELECTRODES

What are the TWO electrodes in an electrolytic cell?

• Anion

• Anode

• Cathode

• Cation

Answer explanation

Anodes are always connected to the positive end of the battery and cathodes to the negative part of the battery

Look at your notes Page 1. Which terminal of the battery is the ANODE connected to?

• positive terminal

• negative terminal

• positive wire

• negative wire

Answer explanation

Cathode is connected to the negative terminal. So that would make CATHODES a NEGATIVE ELECTRODE

Look at your notes Page 1. Which terminal of the battery is the CATHODE connected to?

• positive terminal

• negative terminal

• positive wire

• negative wire

Answer explanation

Cathode is connected to the negative terminal. So that would make CATHODES a NEGATIVE ELECTRODE

On Page 1: Fill in the blank with ONE word (regardless of capital letters)

"The electrolyte ...................... to form cations (positive ions) and anions (negative ions)."

Which one is the NEGATIVE ELECTRODE?

• Cations

• Cathode

• Anion

• Anode

Answer explanation

Just remember that its the opposite signs!

Which one is the POSITIVE ELECTRODE?

• Cations

• Cathode

• Anion

• Anode

Answer explanation

Just remember that its the opposite signs!

You should be able to remember this.

"The ............................. in the electrolyte will be attracted to the anode"

• Cathode

• Cations

• Anode

• Anions

Answer explanation

AN-ions will go the AN-ode

Same as the cations!