Question

How can you demonstrate the law of conservation of mass?

Answer 1

The law of conservation of mass suggests that after a reaction, there is no change in the mass. It does not get bigger or smaller.

Using the chemical equation

For example, in the combustion reaction we have methane - CH4 and oxygen 02 which makes CO2 and H20

You need to balance this so you will end up getting

CH4 + 202 -----> CO2+2H20 (sorry I cant use the small formula numbers)

The mass of the products = mass of reactants which PROVES law conservation of mass :)

Answer 2

an ice cube will have the same mass as the water that forms as the cube melts.