Balloon Racer

I built three balloon racers with Anders and the got better as we made them. The hardest part was making the wheels stable and our car always stopped when it hit the wall. I liked this project project because I learned a lot about friction and weight.

Right Over It

A - 27.50 Hz  1250cm
G - 24.50 Hz  1400cm
C- 16.35 Hz    2100cm
E5 - 659.26Hz  52.3cm

Balloon Racer

I built a balloon racer with Anders.  We actually built two racers and we are each posting about one.  Car #2 is made out of styrofoam.  The axels are cut hangers and the wheels are bottoms of Gatorade bottles.
The car went 8.2296 meters in 9.7 seconds and the mass is 100 grams.
Acceleration= 0.087465193 m/s sq
Net Force= 8.7465193 Newtons
Velocity= 0.87465193 m/s

Test 10 Objective 6

1. An acid is a compound or a substance that increases the concentration of hydrogen ions. It is also said to be a proton donor. When an acid is dissolved in water, a solution is formed with a hydrogen ion activity greater than in pure water.
                                         http://www.blurtit.com/q173970.html


2.  The ph process of changing from an alkaline to an acid
                   http://answers.yahoo.com/question/index?qid=20070416120337AAVerws


3.  The change of color from a substance added.
                    http://answers.yahoo.com/question/index?qid=20080916131539AAWQJIv


4.  Corrosive things eat away at metals and other substances.
          http://wiki.answers.com/Q/What_is_the_definition_of_corrosive


5.  One hydrogen atom and one oxygen atom.
http://wiki.answers.com/Q/What_is_a_hydroxide_ion

Test 10 Objective 5

1.  Mechanical and chemical digestion.
                          http://wiki.answers.com/Q/What_are_the_two_parts_of_digestion

2.  Mechanical digestion is when you chew up food to break it down and chemical digestion is when acids break down the food.
                                http://wiki.answers.com/Q/Compare_mechanical_digestive_to_chemical_digestion

3.  Well mechanical digestion would be a lot harder so the acids in your stomach would have to break down more food.

4. stomach-1, 2 mouth-7, intestine-8
             http://wiki.answers.com/Q/Why_are_the_differences_in_the_pH_of_the_mouth_stomach_and_small_intestine_important_for_digestion

5.  Your mouth needs to be able to soften food and break it down some. Your stomach needs to be able to be able to break food down enough to make energy.  Your small intestine needs to bring waste to the large intestine.
http://wiki.answers.com/Q/Why_are_the_differences_in_the_pH_of_the_mouth_stomach_and_small_intestine_important_for_digestion

Test 10 Objective 4

1.  H+
          http://wiki.answers.com/Q/What_ion_is_present_in_all_acidic_solutions

2.  acids make hydrogen ions and bases make hydroxide ions
             http://wiki.answers.com/Q/What_happens_when_acids_and_bases_dissolve_in_water

3. H+ NO3 in solution
               http://answers.yahoo.com/question/index?qid=20080108190009AA0Uied

4.  The amount of H+ ions.  If ph is higher than 7 it's basic if it's lower its acidic
                http://answers.yahoo.com/question/index?qid=20090102141813AAr1kRp

5.  It would have more hydrogen ions the lower from 7 you go

Test 10 Objective 3

1. Conductive, sour tasting, reacts with a base to neutralize properties, reacts with active metals to release Hydrogen.
         http://plaza.obu.edu/corneliusk/ps/chem/a_b.pdf

2.  Conductive, bitter tasting, react with acids to neutralize properties, slippery to skin.
                http://plaza.obu.edu/corneliusk/ps/chem/a_b.pdf

3.  If it turns red it is an acid, blue is base.

4.  Sour is acid bitter is base.

5.  Fertilizer can stain or burn your hands to the touch.