From the list of items below, select 3 that are pieces of evidence that indicate a chemical change is taking place when magnesium ribbon is burned 1) change in temperature
2) light is produced
3) gas bubbles are produces
4) a precipitate is formed
5) there is a color change

Matches the chemical name of each oxide of phosphorus to its chemical formula

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?