There is no gain in mass or matter in chemical or physical change for a couple of reasons. First, you can't gain matter. Matter cannot be made nor destroyed. Matter is anything that occupies space and weighs something. There is no gain in mass because because in the changes that may occur, you are not adding or subtracting any thing, but simply altering its appearance or the "kinds" of atoms.
remain constant as no mass is lost or gained during a physical change like heating copper.
The answer is mass. The Law of Conservation of Mass states that when a chemical or physical change takes place, you end up with the same amount of mass that you started in. It may just be in a different state, such as a gas.
In a physical change, the chemical composition of the substance remains the same, meaning the elements or molecules present do not change. Additionally, the mass of the substance is also unaffected, as no matter is either created or destroyed during a physical change.
The overall mass of a substance remains the same when it changes state. The mass is conserved during physical changes like melting, freezing, vaporization, or condensation. This is because the number of atoms or molecules in the substance does not change during a change in state.
In a physical change, the mass remains the same since it involves a rearrangement of particles without changing their identities. However, in a chemical change, the mass can change due to the formation or breaking of chemical bonds, resulting in a gain or loss of mass.
mass
Saying that mass is conserved during a physical change means that the total mass of the substances involved remains constant before and after the change. This principle is a fundamental aspect of the law of conservation of mass, which states that mass can neither be created nor destroyed in a chemical reaction or physical change, only transformed into different forms.
mass mass
Physical changes are like cutting paper. The mass does not change. Chemical changes do not change total mass either. If you put a candle in a sealed container so that you may measure the total mass of the candle and the air before burning, then light the candle electrically but keep everything sealed, the total mass after burning will still be the same. But if you measure only the candle, then its mass has changed. So the mass of one single 'ingredient' will change during a chemical change.
it stays da same
Mass is neither a physical nor chemical change; however, it is a physical property of matter.
During a physical change, such as melting or boiling, the mass remains constant. The atoms and molecules rearrange themselves, but none are added or lost, so the total mass remains unchanged.
because some substances gain or loss weight during a reaction
In this case mass doesn't change.
It is a physical change.
Neither a chemical nor a physical change results in a change in mass. According to the law of conservation of matter/mass, matter can neither be created nor destroyed. This law holds true for physical and chemical changes.
remain constant as no mass is lost or gained during a physical change like heating copper.