What happens during the fourth stage of technological design that is not necessary during the sixth or seventh stages of scientific investigation? A design is remodeled after analysis and tested again.
An initial design is implemented and analyzed to gather data.
Conclusions are made and communicated to others.
Criteria are stated to help judge the success of the process.

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next