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Worksheets01-11-2021 Year 11 Chemistry Quiz 2- C6 Electrolysis
Total questions: 30
Worksheet time: 15mins
C6.1- What is electrolysis?
The break down of elements into compounds to create electricity
The break down of elements into compounds using electricity
The break down of compounds into elements using electricity
The break down of compounds into elements to create electricity
C6.1- Chemicals can be electrolysed whilst they are in what states?
Solid and liquid
Liquid and gas
Solid and aqueous
Liquid and aqueous
C6.1- What state is a chemical classed as 'molten' in?
Solid
Liquid
Gas
Aqueous
C6.1- What does inert mean?
Unreactive
High melting point
High boiling point
Hard
C6.1 What do we call the positive electrode?
Anode
Cathode
Diode
Geode
C6.1- What do we call the negative electrode?
Anode
Cathode
Diode
Geode
C6.1- What name do we give to the substance broken down during electrolysis?
Electrode
Electrolyte
Electrocute
Election
C6.1- Why do non-metal ions tend to be attracted to the anode?
Because they form positive ions and opposite charges attract
Because they form negative ions and opposite charges attract
Because they form gases and these attract to positive charges
Because they form gases and these attract to negative charges
C6.2 Which of the following elements is NOT diatomic (diatomic means travel round as pairs of atoms)?
Hydrogen
Neon
Nitrogen
Chlorine
C6.2- Which of the following is the ONLY non-metal ion that is attracted to the cathode?
Chloride ion
Oxide ion
Hydrogen ion
Sulfate ion
C6.2- What chemical process tends to occur at the anode?
Oxidation
Reduction
Neutralisation
Combustion
C6.2- What chemical process tends to occur at the cathode?
Oxidation
Reduction
Neutralisation
Combustion
C6.2- What charged ion does sodium tend to exist as?
+1
-1
+2
-2
C6.2- Which of the following represents the correct process that would occur at the cathode?
C6.2- Which of the following represents the correct process that would occur at the anode?
C6.3- What is the chemical name for aluminium ore?
Ammonite
Bauxite
Cryolite
Dalamite
C6.3- What is the correct formula for aluminium oxide?
C6.3- Why do we add cryolite when electrolysing aluminium?
To lower the boiling point
To lower the melting point
To make it conduct electricity
To make it less reactive
C6.3- When electrolysing aluminium what are the electrodes made of?
Graphite
Diamond
Steel
Platinum
C6.3- What is the side product of the extraction of aluminium using electrolysis?
Chlorine
Nitrogen
Hydrogen
Oxygen
C6.3- Why do the anodes need replacing regularly when extracting aluminium using electrolysis?
Because they react with oxygen to form carbon dioxide
Because they react with aluminium to form aluminium carbide
Because the sink into the mixture
Because they stop conducting electricity
C6.4- Which extra ion(s) are present when aqueous electrolysis takes place?
C6.4- The elements of which group of the Periodic Table are ALWAYS produced at the anode if their ions are present in solution?
Group 1
Group 2
Group 7
Group 0
C6.4- Which ion is ALWAYS reduced at the cathode in aqueous electrolysis?
Hydrogen
The most reactive
The least reactive
Sodium
C6.4- Which gas is produced at the anode if there is no halogen present?
Hydrogen
Oxygen
Sulfur dioxide
Nitrogen
C6.4- Which of these positive ions is LESS reactive than hydrogen?
Aluminium
Copper
Iron
Magnesium
C6.4- If aqeuous copper sulfate is electrolysed what observations would be made?
Bubbles of hydrogen at the cathode, bubbles of oxygen at the anode
Brown metal deposited at the cathode, bubbles of sulfur dioxide at the anode
Bubbles of hydrogen at the cathode, bubbles of sulfur dioxide at the anode
Brown metal deposited at the cathode, bubbles of oxygen at the anode
C6.4- If aqueous sodium chloride is electrolysed, what observations would be made?
Silver metal deposited at the cathode, bubbles of chlorine at the anode
Silver metal deposited at the cathode, bubbles of oxygen at the anode
Bubbles of hydrogen at the anode, bubbles of chlorine at the anode
Bubbles of hydrogen at the anode, bubbles of oxygen at the anode
C6.4- What is the correct half equation for the reduction of the hydrogen ion?
C6.4- What is the correct half equation for the formation of oxygen during aqueous electrolysis?
