Font size
WorksheetsInvestigating Rate of Reaction
Total questions: 18
Worksheet time: 19mins
What are we trying to find out when investigating rate of reaction?
The speed of the reaction
The amount of gas the reaction produce
The change in color
The concentration of the solution
What instrument are needed to measure the speed of reaction?
Stopwatch or clock
Thermometer
Gas syringe
Which chemical reaction is the gas syringe useful?
Chemical reaction that produces gas
Chemical reaction that changes color
Chemical reaction that changes temperature
Chemical reaction that changes concentration
What is the function of gas syringe?
Collect and measure amount of gas produced
Collect and measure amount of liquid produced
Measure the time it takes to become full
A student use gas syringe to investigate rate of reaction for two chemical reactions.
How can he tell which one is faster?
Find out which one collect more gas in a shorter time
Find out which one collect the most gas after reaction ended
Find out the temperature of the chemical when no more gas are collected
Which of the following is the proper practical method when investigating rate of chemical reaction that produces gas?
Check the amount of gas collected every minute.
Check the amount of gas collected every hour.
Check the amount of gas collected after the reaction ended.
A student collects the data of two chemical reactions as shown.
How much gas is produced in experiment 1 after the reaction ended?
(a)
Which one have a higher rate of reaction?
Experiment 1
Experiment 2
Both have the same rate of reaction
How do we know experiment 1 have higher rate of reaction?
After 1 min, experiment 1 produce more gas than experiment 2
After 7 min, experiment 1 produce same amount of gas as experiment 2
Before it started, experiment 1 and experiment 2 have 0 cm3 of gas.
The graph shows two experiment done in different temperature of chemical.
What does the graph tells us?
Experiment A have higher rate of reaction
Experiment B have higher rate of reaction
Experiment A and B have the same rate of reaction
The graph shows two experiment done in different temperature of chemical.
How do we know experiment A have higher rate of reaction?
Experiment A have a steep graph
Experiment A have a flat graph towards the end
Experiment A is labelled in red
The graph shows two experiment done in different temperature of chemical.
What does the graph tells us?
The higher the temperature of chemical, the higher the rate of reaction
The higher the temperature of chemical, the higher amount of gas produced
The higher the temperature of chemical, the longer it takes to complete the reaction
A chemical reaction causes a color change and become opaque after a few minute.
How do we find the rate of reaction?
Find out which one become opaque faster
Find out which one become opaque slower
Find out which one change temperature faster
Find out which one change temperature slower
Which of the following is the proper practical method when measuring rate of chemical reaction that change color? (Pick 3 answers)
Put a mark under the beaker containing the chemicals
Look at the mark from above the beaker
Look at the mark from below the beaker
Measure the temperature until we cannot see the mark.
Measure the time until we cannot see the mark.
A student collects the data of five chemical reactions as shown.
How long does the chemicals in experiment 2 become opaque?
(a)
Which experiment have higher rate of reaction?
Experiment 5
Experiment 1
Experiment 2
Experiment 3
Experiment 4
How do we know experiment 5 have higher rate of reaction?
It take shorter time to become opaque
It have higher concentration of sodium thiosulfate
It take longer time to become opaque
What does the experiment tells us?
The higher the concentration of solution, the higher the rate of reaction
The higher the concentration of solution, the solution become more opaque
The higher the concentration of solution, the more experiment take place
