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WorksheetsIGCSE Chemistry S5_Unit 2
Total questions: 64
Worksheet time: 37mins
Complete the general equation:
Metal + Acid ->
Salt + Water
Salt + Hydrogen
Salt
Complete the general equation:
Metal + Water ->
Salt + Water
Metal Hydroxide + Hydrogen
Metal hydroxide + Water
Salt + Hydrogen
Complete the equation:
Sodium + Hydrochloric Acid ->
Sodium Hydroxide + Hydrogen
Sodium Chloride + Hydrogen
Chloric Sodium + Hydrogen
Sodium Chloride + Water
Complete the equation:
Potassium + Nitric Acid ->
Potassium Hydroxide + Hydrogen
Potassium Chloride + Hydrogen
Potassium Nitrate + Hydrogen
Nitric Potassium + Hydrogen
Complete the equation:
Potassium + Water ->
Potassium Hydroxide + Hydrogen
Potassium Chloride + Hydrogen
Potassium Hydroxide + Water
Nitric Potassium + Hydrogen
Will a displacement reaction occur?
Copper Oxide + Magnesium ->
Yes
No
Will a displacement reaction occur?
Magnesium Sulphate + Zinc ->
Yes
No
Will a displacement reaction occur?
Iron Sulphate + Calcium ->
Yes
No
Metal + water ---> metal hydroxide + hydrogen
Choose the most reactive metal
calcium
magnesium
iron
copper
Aluminium + Iron oxide -->
aluminium
oxide
aluminium oxide and iron
iron
gold + copper iodide-->
gold iodide and copper
No reaction
gold copper
gold iodide
Steel is made of
iron and carbon
copper and iron
tin and carbon
aluminum and nickel
Brass is an alloy made of
copper and zinc
copper and tin
copper and nickel
copper and aluminum
Steel can become stainless when alloyed with _____.
chromium and nickel
copper and zinc
tin and lead
iron aand carbon
What structure do metals have?
lattice
bit wobbly
some metals, some non-metals joined together
Which of these is a property of a metal?
a good insulator
always liquid at room temp
conducts electricity
rude
What does malleable mean?
drawn in to wires
conducts heat
can be bent in to shapes
conducts electricity
sonorous
An alloy is a
mixture which always has at least one metal
compound
mixture with no metals in it
When selecting materials for constructing a bridge, what is the main difference to consider between ferrous and non-ferrous metals?
Non-ferrous metals cannot be recycled.
Non-ferrous metals are always magnetic.
Ferrous metals contain iron, non-ferrous do not.
Ferrous metals are lighter than non-ferrous metals.
Imagine you're selecting materials for outdoor furniture that needs to withstand various weather conditions without rusting. Which metal would you choose for its ability to resist rust and stains?
Copper
Aluminium
Mild Steel
Stainless Steel
Which of the following is a property of lead?
High conductivity
Soft and heavy
High tensile strength
Lightweight
Why is copper commonly used in household electrical wiring?
Malleability
Ductility and conductivity
Brittleness
Resistance to rust
During a science fair, a group of students presented a project on metals and their compositions. They displayed various samples, including Brass, Lead, Wrought Iron, and Stainless Steel. Which of these samples is not an alloy?
Brass
Lead
Wrought Iron
Stainless Steel
What is the main use of wrought iron?
Batteries
Aircraft
Ornamental gates and railings
Cutlery
Imagine you are an engineer tasked with designing a new line of commercial airplanes. Which metal would you primarily choose for the aircraft's structure due to its light weight?
Lead
Aluminium
Copper
Silver
Why do engineers prefer using tube steel sections over solid steel sections for constructing a bridge?
Reduced weight
Better aesthetic appeal
Increased weight
Higher cost
A craftsman is working on a new musical instrument and needs a durable yet malleable metal. He decides to create an alloy by mixing copper with another metal to produce brass. Which metal should he mix with copper?
Zinc
Nickel
Chromium
Iron
Why is mild steel a common choice for manufacturing school furniture?
Non-conductivity
Lightweight
Ability to resist rust
High tensile strength
Which of the following is more reactive?
Calcium
Magnesium
Zinc
Magnesium
Will the following reaction take place?
Ni + NaCl ->
NO
YES
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
What are the products when magnesium reacts with hydrochloric acid?
magnesium nitrate and hydrogen gas
magnesium sulfate and hydrogen gas
magnesium oxide and oxygen gas
magnesium chloride and hydrogen gas
What is the oxidation number of Cl2?
0
+1
+2
-1
What is the oxidation number of Sulfide ion, S2-?
-2
-1
0
+2
What is the oxidation number of oxygen in H2O?
0
+1
+2
-2
What is the oxidation number of phosphorus in phosphate ion, PO43-?
0
+1
+5
-5
What is the oxidation number of sulfur in H2SO4?
0
+1
+4
+6
Which of these chemical reactions is an oxidation-reduction reaction?
CO2 + H2O -> H2CO3
Fe + S -> FeS
AgNO3 + NaCl ->AgCl + NaNO3
H2SO4 + 2NaOH -> Na2SO4 + 2H2O
In which substance does bromine have an oxidation number of +1?
Br2
HBr
HBrO
HBrO2
What happens to the oxidising agent in an oxidation-reduction reaction?
It is oxidised as it gains electrons.
It is oxidised as it loses electrons.
It is reduced as it gains electrons.
It is reduced as it loses electrons.
2 CaO--> 2 Ca + O2
Reduction is the ___________ of electrons.
loss
gain
sharing
transfer
Which of the following represents oxidation?
C → CH4
Fe3+ → Fe2+
Cl2 → 2Cl-
Zn → ZnO
In the reaction Zn + 2HCl --> ZnCl2 + H2
which element, if any, is oxidized?
Zinc
Hydrogen
Chlorine
None
Mg → Mg2+ + 2e–
The following chemical equation represents the extraction of silicon from quartz using coke.
SiO2 + C → Si + CO2
What is the change in oxidation number of silicon?
+2 to 0
+4 to 0
0 to +2
0 to +4
charge on cation is
(a)
Which of the following cannot occur during oxidation?
Gain of oxygen
Donation of electrons
Loss of hydrogen
Decrease in oxidation number
What is the oxidation number of oxygen in oxygen gas, O2 ?
-2
0
-1
+1
