C10

Question 1

Ionic compounds

Answer 1

Made out of metals and non-metal

Question 2

What is Electrolysis

Answer 2

The process by which ionic substances are decomposed (broken down) into simpler substances when an electric current is passed through

Question 3

When can electrolysis be used?

Answer 3

To break down IONIC substances

Question 4

What is an electrolyte

Answer 4

A broken down IONIC substance

Question 5

What is the value of a metal and a non-metal

Answer 5

Metals -> Always positive
Non-metal -> Always negative

Question 6

In which states can undergo electrolysis

Answer 6

Molten ionic substances and ionic substances in a solution

Question 7

What is a positive and negative electrode called?

Answer 7

Positive electrode -> Anode
Negative electrode -> Cathode

Question 8

When are charges attracted?

Answer 8

When an Anode and a Cathode are present

Question 9

Can substances and compounds be separated?

Answer 9

Yes, by many methods like electrolysis, evaporation, distillation, magnetic seperation etc..

Question 10

Electrolysis of copper sulfate core practical

Answer 10

Use two pieces of copper foil cleaned with emery paper as your electrodes and label them as your anode and cathode in a beaker. Measure and record the mass of the electrodes and half fill the beaker with copper sulfate solution with the circuit set up. Adjust the variable resistor to 0.2 and record the current then leave it for 20 minutes. Turn it off and remove the electrodes then rinse it with distilled water then dip them in propane and measure the recorded masses of the dried electrodes

Question 11

Why do ionic compounds conduct electricity?

Answer 11

Because their ions are free to move but only in a molten and solution form (LIQUID) whereas a solid can’t

Question 12

How does electrolysis work on solutions and moltens

Answer 12

Ionic compounds (in liquid form) conduct electricity. The current (electricity) causes the ionic compound to split up and form new substances