Chemistry Easter Revision

Chemistry Easter Revision

Multiple Choice

Iron nails + copper oxide → ?

• Iron nails + copper oxide

• Iron oxide + copper oxide

• Iron oxide + copper

• Magic

Multiple Choice

Choose the least reactive metal

• calcium

• magnesium

• iron

• copper

Multiple Choice

Which of the following is MOST reactive?

• Magnesium

• Lead

• Tin

• Copper

• Zinc

Multiple Choice

Which of the following will not undergo reaction?

• zinc metal  +  zinc oxide 
• iron metal  +  copper oxide
• zinc metal +  iron oxide
• magnesium  +  iron oxide

Multiple Choice

A displacement reaction will occur when...

• a more reactive metal displaces a less reactive metal from its compound.
• A less reactive metal displaces a more reactive metal from its compound
• Displacement only occurs when two of the same metals are reacted 
• Displacement reactions will only occur in metals above iron in the reactivity series

Multiple Choice

Which one of the following combinations result in a displacement reaction?

• Iron with magnesium chloride

• magnesium with iron chloride

• Iron with Zinc Sulphate

• gold with silver nitrate

Multiple Choice

Iron + copper oxide =

• Iron + copper oxide

• Iron oxide + copper oxide

• Iron oxide + copper

• Magic

Multiple Select

Many metals are extracted from their ores by heating them with carbon in huge furnaces. Which metal(s) cannot be extracted using this method?

• Aluminum

• Calcium

• Zinc

• Copper

Multiple Choice

What is the addition of oxygen to a substance called?

• decomposition
• reduction
• oxidation
• extraction

Multiple Choice

What is an ore?

• a solid metal

• a rock containing a metal combined with other elements, often oxygen

• an element

• an object used to row a boat

Open Ended

how is a metals position on the reactivity series linked to oxidation?

answer

The higher a metal is on the reactivity series the easier it is to oxidise it. High reactivity metals readily lose their outer electrons.

Open Ended

how is a metals position on the reactivity series relate to the method used to extract it from its ore?

Answer

metals with reactivity below Carbon can but reduced from their metal oxides by heating with carbon. Metals with higher reactivity than carbon must be electrolysed. the lowest reactivity metals can be found un-combined in the Earth's crust.

Multiple Choice

• A

• B

• C

• D

Multiple Choice

What is the equation to show what happens to Cl ions at the anode.

• Cl^- --> Cl + e-   
• 2Cl^- --> Cl₂ + 2e-   
• Cl₂ + 2e-   2Cl^- 
• Cl₂ + 2e-  _-->  2Cl^- 

Multiple Choice

When NaCl solution is electrolysed what has forms at the anode?

• Hydrogen

• Oxygen

• Chlorine

• Sodium

Multiple Choice

When NaCl solution is electrolysed what has forms at the anode?

• Hydrogen
• Oxygen
• Chlorine
• Sodium