Isotopes of an element will always have the same a. number of protons. b. number of neutrons. c. number of electrons. d. mass.

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

Table sugar completely dissolved in water is an example of a?

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy