1. Make and mix the different fuels by adding 10 ml of table salt (NaCl) to different amounts of tap water (H2O). Label the containers with the amount of water and salt each solution contains.

Water	100ml	200ml	400ml	500ml	1000ml
Salt	10ml	10ml	10ml	10ml	10ml
Water	4500ml	5000ml	6000ml	7000ml	8000ml
Salt	10ml	10ml	10ml	10ml	10ml
Water	9000ml	10000ml	11000ml	12000ml	13000ml
Salt	10ml	10ml	10ml	10ml	10ml

2. Put new AA batteries in the Formula Fuelers car.

3. Put masking tape on the floor to mark a starting grid and a finish line. The distance used in this experiment was 4.95 meters.

4. Fill the fuel cell, up to the “MAX” line, with each different concentration of salt and water, one at a time. Be sure to rinse out the fuel cell with tap water when changing fuel. Place the fuel cell in the slot on the top of the car.

5. Ask someone to be the starter and get them to place the Formula Fuelers car in the right position in the starting grid. The starter person should always be the same person so the car will always be placed in the same place.

6. Have someone at the finish line with a stop watch and clipboard ready to record the time it takes the car to go from the starting grid to the finish line. The person recording the time should again always be the same person.

7. Press the start button on the top of the car and record how long it takes for the car to get to the finish line. (Repeat three times for each fuel).

8. Record the results on a chart. Add together the three recorded times for each concentration of fuel and calculate the average time.

9. Make a graph of the results.