Which of the following statements are true of thermal energy and kinetic energy?
Check all that apply.
A. Kinetic energy is the energy of motion of all the molecules or
atoms.
B. Thermal energy is the energy of motion of each molecule or atom.
C. Kinetic energy is the energy of motion of each molecule or atom.
D. Thermal energy is the energy of motion of all the molecules or
atoms.

Dying the folding patterns of protein molecules can microbiologists better understand cellular processes as well as some diseases, such as alzheimer’s, that are caused by proteins that have misfolded. the folding of these complicated molecules can be simulated on computers, but it takes a lot of processor power and time for even expensive supercomputers to do this. a group of researchers at stanford university developed software that can be used to distribute the processing of data to anyone who is willing to donate time on their idle personal computers. as a result, the researchers have been able to achieve protein-folding simulations that are far better than those other computing methods have done. which statement best describes the work of these researchers? the work is not scientific because the data are not processed in one location. the work is not scientific because the simulations are not reproducible. the researchers applied creativity to solve a problem in running an experiment. the researchers used only well-established scientific techniques.

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Compare and contrast physical changes with chemical changes.