Chemistry Electrolysis Flashcards
1
Q
What is an ion?
A
An atom or molecule that has a charge
2
Q
What is a cation?
A
A positively charged ion
3
Q
What happens when there is a higher concentration of NaCl?
A
More Na+ and Cl- particles present and less water particles (H+ and OH-) particles present
4
Q
Where will an element be deposited if the other element is higher than it in the reactivity series?
A
The cathode
5
Q
How is pure copper obtained?
A
Use a pure copper cathode as it will increase in mass during the reaction
6
Q
What is electroplating?
A
Depositing a thin layer of one metal on the surface of another metal
7
Q
2 uses of sodium hydroxide
A
Oil refining and manufacturing of plastic
8
Q
2 uses of chlorine
A
Antiseptic, make drinking water safe
9
Q
2 uses of hydrogen
A
Wielding and rocket fuel
