If an atom gains two electrons in a chemical reaction, what is its charge?
a
question 4 options:
-2
-1
+2
+1

What will a positive and a negative charge do if they are separated from each other?

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

Properties seen when one one substance changes to another are known as properties