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WorksheetsYear 11 Chemistry Spring 3 Quiz 7- C8 Rates & Equilibrium Pt 1
Total questions: 30
Worksheet time: 15mins
C8.1 What is meant by the phrase 'rate of reaction'?
How much product is made
How quickly a chemical reaction occurs
How much reactant is used up
How far a chemical reaction goes
C8.1 Which of these is NOT a valid way of measuring the rate of reaction?
The change in mass of a reaction over time
What volume of gas is produced over time
How long it takes a colour change to occur
The highest temperature recorded in a chemical reaction
C8.1 Which piece of equipment would you use to measure the volume of a liquid?
Gas syringe
Beaker
Conical flask
Measuring cylinder
C8.1 Which piece of equipment could you NOT use to measure the volume of gas produced by a reaction over time
Inverted Beaker
Inverted burette
Inverted measuring cylinder
Gas syringe
C8.1 What does 'control variable' mean?
The thing you change
The thing you measure
The thing you keep the same
The thing you ignore
C8.1 If you were measuring how the concentration of an acid affected the rate at which it reacts with a piece of magnesium metal, which of these is NOT an appropriate control variable
The mass of magnesium
The volume of acid
The temperature of the acid
The volume of the container used
C8.1 Which of these would NOT affect the rate of a chemical reaction?
Temperature of the reaction mixture
Volume of the reaction mixture
The concentration of any solutions used
The surface area of any solids used
C8.1 What is this piece of equipment called?
Beaker
Conical flask
Measuring cylinder
Jar
C8.1 How can you tell this reaction went quickest at the start of the reaction?
Because the line goes up
Because the line in a curve
Because the gradient is steepest
Because the line levels out
C8.1 Which line represents the experiment where a greater mass of marble chips was used?
Blue
Green
Orange
Purple
C8.1 How do you find the gradient of a straight line?
Use the axes and calculate change in y (rise) divided by change in x (run)
Count the squares and calculate change in y (rise) divided by change in x (run)
Count the squares and calculate change in x (run) divided by change in y (rise)
Use the axes and calculate change in x (run) divided by change in y (rise)
C8.1 How do you use a graph to calculate the average rate of reaction of an experiment for the first 30 seconds?
Draw a tangent of the line at 30s and find its gradient
Find the volume of gas produced by that time and divide it by 30
Measure the area under the graph between 0 and 30 seconds
Connect the points at 10 seconds and 30 seconds and find the gradient of that line
C8.1 How do you use a graph to calculate the rate of reaction of an experiment at EXACTLY 30 seconds?
Draw a tangent of the line at 30s and find its gradient
Find the volume of gas produced by that time and divide it by 30
Measure the area under the graph between 0 and 30 seconds
Connect the points at 10 seconds and 30 seconds and find the gradient of that line
C8.1 How do you use a graph to calculate the average rate of reaction of an experiment BETWEEN 10 seconds and 30 seconds?
Draw a tangent of the line at 30s and find its gradient
Find the volume of gas produced by that time and divide it by 30
Measure the area under the graph between 0 and 30 seconds
Connect the points at 10 seconds and 30 seconds and find the gradient of that line
C8.1 In the disappearing cross reaction, which chemical causes the mixture to turn cloudy?
Sodium chloride solution
Solid sulfur
Sulfur dioxide gas
Water
C8.2 Which of these forms of calcium carbonate would you expect to react with acid the quickest?
One large piece of limestone
Large marble chips
Small marble chips
Powdered calcium carbonate
C8.2 Surface area only applies when referring to particles in which state?
Solid
Liquid
Gas
Aqueous
C8.2 Which of these forms of calcium carbonate has the SMALLEST surface area?
One large piece of limestone
Large marble chips
Small marble chips
Powdered calcium carbonate
C8.2 What do we call the theory associate with why rate of reaction increases?
Speed theory
Collision theory
Kinetic theory
String theory
C8.2 Why does increasing the surface area increase the rate of reaction?
It increases the energy of the particles
It means the particles collide more frequently
It means the particles move faster
It means there are more chemicals
C8.2 Why don't all particles that hit each other react?
They don't want to
They have too much energy
They don't have enough energy
They are sometimes in the wrong state
C8.2 What do we call the minimum energy required for a particle to have to react successfully?
Start energy
Enthalpy change
Required energy
Activation energy
C8.3 Which of these increases the energy at which the particles move in a reaction?
Surface area
Temperature
Pressure
Concentration
C8.3 Which of these explains why particles react faster at higher temperatures
They collide more frequently
They collide harder
They are more likely to have the activation energy
All of the answers are correct
C8.3 Which of these methods is the best way of changing the temperature of a reaction mixture?
Kettle
Water bath
Bunsen burner
Infrared lamp
C8.4 Concentration only applies as a factor affecting rate of reaction for chemicals in what state?
Solid
Liquid
Gas
Aqueous
C8.4 Pressure only applies as a factor affecting rate of reaction for chemicals in what state?
Solid
Liquid
Gas
Aqueous
C8.4 Which line represents the reaction between magnesium and excess acid of the highest concentration?
A
B
C
None
C8.4 Which line represents the reaction between acid and excess calcium carbonate with the lowest surface area?
A
B
C
None
C8.4 Regardless of what type of experiment you are doing to measure the rate of reaction, which piece of equipment is ALWAYS needed?
Conical flask
Balance
Delivery tube
Stopwatch
