Mixing Alka-Seltzer and water is a reversible change because it can be undone by allowing the water to evaporate, leaving behind the original substances in their initial forms.
reversible
Portland cement (and the concrete, mortar, thin set, or other masonry product made from it) doesn't dry. Rather, it cures by a chemical reaction initiated by putting water in it. The reaction is irreversible; hence, adding water to cement is an irreversible change.
Mixing cement and water is a reversible change because the two substances can be separated by allowing the water to evaporate, leaving the solid cement behind. This process does not alter the chemical composition of either the cement or the water.
No, a lava lamp is not a reversible change. The melting and mixing of the wax and oil inside the lamp is a physical change that cannot be easily reversed to its original state.
Yes, mixing gases is a reversible change because it can be easily undone by separating the gases through processes like filtration or distillation. The individual gases retain their properties and do not chemically combine when mixed, allowing them to be separated efficiently.
Irreversible
no
Sugar and Salt
It is reversible. You can allow the water to evaporate, leaving the salt behind.
reversible
Portland cement (and the concrete, mortar, thin set, or other masonry product made from it) doesn't dry. Rather, it cures by a chemical reaction initiated by putting water in it. The reaction is irreversible; hence, adding water to cement is an irreversible change.
No because you can't get the vinegar back to it's original state because some of the bacteria has gone inside the milk
Mixing cement and water is a reversible change because the two substances can be separated by allowing the water to evaporate, leaving the solid cement behind. This process does not alter the chemical composition of either the cement or the water.
No, a lava lamp is not a reversible change. The melting and mixing of the wax and oil inside the lamp is a physical change that cannot be easily reversed to its original state.
Yes, mixing gases is a reversible change because it can be easily undone by separating the gases through processes like filtration or distillation. The individual gases retain their properties and do not chemically combine when mixed, allowing them to be separated efficiently.
Mixing lemon juice and baking soda results in a chemical reaction that produces carbon dioxide gas, water, and sodium citrate. This reaction is irreversible as the original substances are transformed into new substances with different properties.
The process of coffee cooling down and giving up heat to the environment is irreversible since the available heat in the environment will never re-heat the coffee. I believe the process of mixing coffee grinds with hot water is also irreversible. Theoretically it would be possible but i think you would have to do work on the system to separate the two which would make it irreversible.