Claim Evidence Reasoning By: Hannah and Ashley

We believe that when there is more hydrogen in the syringe, the farther the car will travel. We think this will happen because in cars on the road today, the more gas that is in the tank, the farther it will go

Evidence: Scientific data that supports the claim

Test 1
Test 2
Test 3
Test 4
Test 5
Test 6
2.5 mL
1.40 Volts
1.40 Volts
1.44 Volts
1.26 Volts
1.26 Volts
1.36 Volts
23.9200 Meters
18.4404 Meters
12.0396 Meters
4.7244 Meters
4.3688 Meters
2.5908 Meters
Our Graphs:
Above: Graph 1
Right: Graph 2
Studies show that the more gas is in a car the farther the car will go. Note: this will only work if the car is going at the same speed. If the car goes faster or slower it will burn gas at different speeds. In our test, the more hydrogen we put in the car the father the car went. The car with 20mL of hydrogen in it went farther than the car with 15mL of hydrogen in it. We also saw in the data that once you decreased the hydrogen to 1/2 the original amount the distance decreased by almost 1/2.

Example :
  • 20mL of Hydrogen ------- 23.92 meters
  • 10mL of Hydrogen ------- 12.03960 meters

We noticed that the more hydrogen in the car the farther the car would travel. As the hydrogen amount got lower the distances became shorter. We also noticed that the voltage the car got didn't seem to affect how far the car went. We concluded this because there doesn't seem to be a consistent pattern with the other data and the voltage. After studying our graphs, we found trends that make the graph look a particular way. We noticed that the distance bars are almost always taller than the hydrogen bars. This means that they car went farther in meters than the amount of mL of hydrogen in the car. This was true for every test but test 4. If you look at graph 1 you will notice that the decline from each test is pretty steady until you get to test 4 and 5.

Reasoning: Justification showing why the evidence supports the claim.
Based on the evidence in our data, we believe our claim to be true. We can also use the proof of common knowledge, which is that the more gas that a car has in a tank the farther the car will go. This is because the car will have more fuel to burn. We are not surprised that our data looks the way it does. The only surprising thing is that as the hydrogen amount got smaller, the car really didn't dramatically change its distance.

(Refer to graph one for following statement)

We expected that from test 4 to test 5 there would be a change of about 2.5 meters. We think that this possibly didn't happen because the amount of fuel was so low the car might have barely been able to run. Another thought we had was that their might have been an error in our test. We thought this because the data from test 4 is clearly an out-lier. We predicted that the car would go about 6 meters when it only went 4.7244 which is about one meter less than we expected. It is also less than 1 meter longer than the distance in which 2.5 mL traveled. This is why we think something could have gone wrong during test 4. We think to make this test better and get improved results we should start with a higher amount of hydrogen for example 100mL and go down from there. Because of our data and our findings we strongly believe our claim to be correct.

Questions for further research?
  • Is there a maximum amount of hydrogen that our particular fuel cell can create?
  • Is there a possibility to be filling up the fuel and pumping in more water (so the fuel cell can continue to work) at the same time?
  • What would happen if while the car is running you push on the syringe making the fuel push back towards the cell?
  • Is there any possibility that you could collect fuel and then transport it to a new car and use that fuel to run the other car?

Clark Palmer. "How Long Will You Last on a Tank of Gas?" This Calculator-interactive Tool Shows How Far You Can Go on a Tank of Gas and How Much It Costs per Mile. © 2015 Bankrate, n.d. Web. 01 Apr. 2015. <>.