7. A sketch of Rutherford's equipment setup and observations is reproduced below
(Gold foil experiment - Tootsie Pop candy representation). Which observation let him
to conclude that the atom contained a nucleus?
gold foil
radiation
radioactive
source
ZnS screen
backward scattering
Forward scattering
a. backward scattering only
b. forward scattering only
c. both forward and backward scatterina

Compare and contrast solutions and suspensions

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.

Helium decays to form lithium. which equation correctly describes this decay?