Question

What would my reasoning for the physical change of Calcium carbonate?

Answer 1

The equation shows that, when an electric current is passed through water, two molecules (or two moles) of liquid water will decompose to yield two molecules (or two moles) of gaseous hydrogen and one molecule (or one mole) of gaseous oxygen. Energy of 591 KJ is absorbed for every two moles of water decomposed. The equation also shows that a molecule of water contains two atoms of hydrogen and one atom of oxygen and that hydrogen and oxygen are datomic gases.

C3h8(g) + 5 o2(g)  three co2(g) + four h2o(l) h = -2220 kj

the symbols after each formula display the physical kingdom of that substance. The equation may be read as: one molecule of gaseous propane reacts with five molecules of gaseous oxygen to yield three molecules of gaseous carbon dioxide and 4 molecules of liquid water. An equation can also be study in terms of moles. This equation states: one mole of gaseous propane reacts with 5 moles of gaseous oxygen to yield three moles of gaseous carbon dioxide and 4 moles of liquid water. The h term following the equation describes the enthalpy trade h that accompanies the reaction. For this equation, the enthalpy term states that the combustion of 1 mole of gaseous propane to gaseous carbon dioxide and liquid water is observed through the discharge of 2220 kj of energy. We will discuss enthalpy modifications accompanying a reaction more thoroughly in segment eight. Five. The equation given for the burning of propane is a complete equation. While a discussion centers at the reactants and merchandise of a reaction, in preference to at the associated strength alternate, the physical states and the enthalpy trade (h) are regularly disregarded.

Answer 2

Answer:

The calcium carbonate (aka Chalk) was ground up. It is a physical change, so it is still chalk, no chemicals were used, and there was no change of state.

~theLocoCoco