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Physical Or Chemical Change?
Determine if each is a physical or chemical change.
Question 1 of 20
1. glass breaking
(1 point)
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What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?