Reactivity Series
List three properties of metals
Good conductors of electricity
Reacts with acids
Lustrous
When/Why does metal displacements happen?
The more reactive metal pushes out, or displaces, the less reactive metal from its compound.
Complete the equation:
Metals + Oxygen
= Metaloxides
Define the rate of reaction
The amount of reactants used up/products formed, over time
Explain the effect of pressure on RoR
If the concentration reactant is increased, or the pressure of a reacting gas is increased:
the reactant particles become more crowded
there is a greater chance of the particles colliding
The rate of reaction increases.
Magnesiums, Iron, Potassium, Gold
Complete: Coppersulfate + Magnesium
Magnesium Sulfate + Copper
Complete the word equation:
Magnesium + Oxygen
Magnsium Oxide
Four factors affecting Rate of Reaction
Temp
Concentration
Catalyst
Surface Area
What does Reduction mean?
Gaining electrons
Complete this word equation
Metals + Acid → ______ + _______
Will silver react with magnesium chloride?
No reaction will occur
Complete:
Cu + O2
2Cu + O2 → 2CuO
What is the effect of changing the temperature on the rate of the reaction?
Explain why vegetables last longer in a fridge?
Lower temperature slows down enzyme activity and bacterial growth
List 4 ways I know a reaction has taken place
Fizzing, colour change, temperature change, odour change
Predict if a reaction will take place and how intense the reaction will be: Zinc + Oxygen
Reacts and produces coating
Chemical reactions can only happen if reactant particles collide with enough energy. The more frequently particles collide, and the greater the proportion of collisions with enough energy, the greater the rate of reaction
Define corrosion
Corrosion occurs when most or all the atoms on a metal surface are oxidized
If the temperature is increased in a reaction, what happens and why:
the reactant particles move more quickly
they have more energy
the particles collide more often
The rate of reaction increases
Joanne added iron filings to copper sulphate solution. She observed the reaction after one week.
The reaction between iron and copper sulphate is a displacement reaction.
(i) Give the name of the orange metal visible after one week.
Copper
Write a word equation for the following and explain why the reaction takes place:
Magensium and Silver Nitrate
Magnesium nitrate + silver
Displacement Reaction (Magnesium is more reactive than silver)
In a chemical reaction, 20 g of sodium hydrogen carbonate is produced. The reaction takes 12 minutes. Calculate the mean rate of the reaction. Give your answer in g s−1 .
Step 1: Convert the time into seconds.
t (s)=t (min)×60=12×60=720 st (s)=t (min)×60=12×60=720 s
Step 2: Calculate the mean rate. In this example the amount of product formed is measured by the mass.
mean rate=mass of producttime=20/720=0.028 g/s
Write the chemical equation:
Iron + Oxygen → Iron Oxide
Fe + O2 → Fe2O3
How can combustion be applied to remove a metal from an ore?
Combustion can be used in metal extraction by heating iron ore (e.g., hematite, Fe₂O₃) with carbon in a blast furnace. The carbon reacts with oxygen to form carbon monoxide, which then reduces the ore to molten iron.
Write the chemical reaction in a blast furnace
Fe_2O_3 + 3CO → 2Fe + 3CO_2