Year 10 CHE Gases in the atmosphere questions
star
star
star
star
star
Last updated about 2 years ago
6 questions
1
Work out the syringe readings at:the start and the end of the experiment, and calculate the volume of oxygen used up.
Work out the syringe readings at:
the start and the end of the experiment, and calculate the volume of oxygen used up.
1
Use the results in the table to plot a graph of volume of oxygen used up against volume of air at start. Draw a straight line of best fit.
(ii) One of the results is anomalous. Identify this result by circling it on the graph.
Use the results in the table to plot a graph of volume of oxygen used up against volume of air at start. Draw a straight line of best fit.
(ii) One of the results is anomalous. Identify this result by circling it on the graph.
1
(c) Another group of students did experiments that gave several anomalous results. The teacher discussed possible errors that could have caused these anomalous results.
If the iron filings are not in excess... what effect would this have on the volume of oxygen used up?
(c) Another group of students did experiments that gave several anomalous results. The teacher discussed possible errors that could have caused these anomalous results.
If the iron filings are not in excess... what effect would this have on the volume of oxygen used up?
1
If the experiment was left for 1 day instead of 1 week... what effect would this have on the volume of oxygen used up?
If the experiment was left for 1 day instead of 1 week... what effect would this have on the volume of oxygen used up?
1
If the apparatus was left in a warmer place for one week ... what effect would this have on the volume of oxygen used up?
If the apparatus was left in a warmer place for one week ... what effect would this have on the volume of oxygen used up?
1
Use the following results to calculate the percentage of oxygen in air:
Total volume of air at start in cm3: 140 Volume of gas at end in cm3: 111
Use the following results to calculate the percentage of oxygen in air:
Total volume of air at start in cm3: 140
Volume of gas at end in cm3: 111