Question 1(Multiple Choice Worth 2 points) In the table below, which statement would best fill the missing box under "Open System"? Open System Closed System Matter freely moves Matter does not freely move Energy can enter or leave Energy is constant Energy is not exchanged Energy is freely exchanged Energy does not freely move

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

How many valence electrons are in atom of radon?