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

In physics the desire of an object to keep doing what it is doing is termed?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.