Which of the following is a chemical reaction? a. the formation of a covalent bond between two amino acids. b. making a hydrogen bond between a water molecule and a sugar molecule. c. changing a carbon atom to a nitrogen atom by radioactive decay. d. the melting of ice.

How manyatoms of mercury are in 1.4214e+1 ml sample

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

Part 1: include important facts found through your research. part 2: include your visual display. include your summary of “the chemistry of water” from the national science foundation website. include your experiment. part 3: include responses to the reflection questions.