A solid is placed in a solution. Which observation most likely indicates that a chemical reaction has occurred? The size of the solid has rapidly decreased.
The color of the solution has not changed.
The solid has bubbles forming on its surface.
The temperature of the solution stays the same

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u. s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?