Electrolysis Test with complete solutions, Exams of Nursing

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Electrolysis Test

Electrolysis - Answer- Using electricity to separate in an ionic compound into its constituent elements (the elements that make the compound) Electrolyte - Answer- A chemical that conducts electricity (salt,ionic compound

• need to be an ionic compound (+ and - ions)
• needs to be in the liquid state -- Molten(l) --> melting -- Aqueous(aq)--> dissolving in water What are the 7 diatomic elements? - Answer- H O N Cl Br I F Molten - Answer- Melting What do you call a solution dissolving in water? - Answer- Aqueous Electrodes - Answer- Solids that conduct electricity (Carbon/ Copper

• electrode - Answer- Anode

• electrode - Answer- Cathode Anion - Answer- -ion is attracted to the anode (opposites attract) Cation - Answer- +ion is attracted to the cathode (opposites attract) Electrolysis of a molten solution - Answer- CaBr2 (Calcium Bromide) Ca+2--> Br(-1) and Br (-1) FeI2(l) - Answer- Fe(s) +I2 (g) FeI2(aq) - Answer- Fe (s) + O2 (g) What happens to metals at the cathode? - Answer- At the cathode all metals will become a solids only time it is a gas is if hydrogen is involved. KBr (aq) - Answer- H2(g) +O2 (g)

NiCl3 (s) - Answer- no reaction ( can only be done when in liquid or aqueous state)