when an atom that has no charge loses two electrons, it becomes a
positive ion.
negative ion.
positive isotope.
negative isotope.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

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

Aspecimen of oil having an initial volume of 580cm^3 is subjected to a pressure increase of 4.0 mpa, and the volume is found to decrease by 0.40 cm^3. (a) what is the bulk modulus of the material? (b) what is the compressibility of the material?