ELECTROLYSIS - IONS, ELECTROLYTES AND ELECTRODES (PART 1)

ELECTROLYSIS - IONS, ELECTROLYTES AND ELECTRODES (PART 1)

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​What are we learning today?

1. ​What IONS are present in a given ELECTROLYTE

2. ​WHERE do these ions go to

3. ​The HALF-EQUATIONS of these ions

Multiple Choice

First things first. Sodium is in Group 1. So the formula for sodium ion should be:

• Na

• Sodium

• Na+

• Na Na Na Na

Multiple Choice

Chlorine is in Group 1. So the formula for chloride ion should be:

• Cl2

• Chlorine

• Cl-

• Cl Cl Cl Cl

Okay now lets start the lesson! Press NEXT. ​

Multiple Choice

What ions are present in NaCl?

• Na+ and Cl-

• Na and Cl

Multiple Choice

What ions could aluminium oxide possibly contain?

• Aluminium and oxygen

• Aluminium only

• Al3+ and Cl-

• Al3+ and O2-

Multiple Choice

What ions are present in aluminium oxide with the formula of  $$Al_2O_3$$  ?

• Al and O2

• Al3+ and O2- 

• Al and Cl

• Al and Cl-

Multiple Choice

Which direction do electrons flow?

• from the positive to negative terminal

• they go back and forth

• from the negative to positive terminal

• they just spin around

Multiple Choice

The positive terminal of battery is attached to the

• anode

• cathode

• electrode number 1

• electrode number 2

Multiple Choice

The negative terminal of battery is attached to the

• anode

• cathode

• electrode number 1

• electrode number 2

Multiple Choice

Where do the cations go?

• To the anode!

• To the cathode!

Multiple Choice

Where do the anions go?

• To the anode!

• To the cathode!

Multiple Choice

The electron flow is like a conveyor belt. Electrons flow from the positive terminal of battery to the negative terminal of battery. 

Which direction of electrons (of the electrodes) is correct?

• from the left to right

• from the cathode to the anode

• from the anode to cathode

• from the right to left

Multiple Choice

What did i say in the video? The anode 1. ________ electrons and the cathode

2. _________ electrons

• 1. accepts

  2. gives out electrons

• 1. gives out electrons

  2. accepts

Multiple Choice

The Na+ ions will go to the...

• anode

• cathode

Multiple Choice

The Cl- ions will go to the...

• anode

• cathode

Multiple Choice

This is very important to remember. So please answer this again.

Which direction of electrons (of the electrodes) is correct?

• from the left to right

• from the cathode to the anode

• from the anode to cathode

• from the right to left

​THANK YOU FOR ANSWERING AND WATCHING BOYS!

​SEE YOU NEXT WEEK!!