Upon experimentation in your secret underground laboratory, you have determined that substance X has developed new properties and it's chemical composition is
different.

In your lab report, you would conclude that this is a?

(Physical Change)
(Chemical Change)
(Physical Property)
(Chemical Property)

Which change to the system wood cause the freely-moving piston to lower?

What is the number of neutrons in an atom with atomic mass of 35

Individuals within populations exhibit some diversity. as a result of possessing slightly different traits, some individuals are better able to survive and reproduce than others. if these individuals changes in the characteristics of the population may occur over time. the cumulative change in these characteristics is known as