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Is mixing cement and water 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.
Is mixing cement and water a 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.
Is mixing alka seltzer and water a reversible or irreversible change?
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.
When mixing to make concrete what do you add to the mix last sand water or cement mix?
The water should be added last. All the aggregate materials and the cement should be thoroughly mixed before the water is added.
Is mixing oil and water a reversible or irreversible change?
reversible
Is mixing cement and water 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.
Is mixing cement and water a 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.
Is mixing salt and water a reversible or irreversible?
It is reversible. You can allow the water to evaporate, leaving the salt behind.
Mixing sugar and water is reversible or irreversible?
Sugar and Salt
Is mixing alka seltzer and water a reversible or irreversible change?
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.
Is mixing flour and water is reversible or irreversible?
no
Mixing sand and sugar is it reversible or irreversible?
Irreversible
Concrete can be made by mixing water with sand crushed stone and?
A. Cement
Concrete can be made by mixing water with sand crushed stone and what?
cement
When mixing to make concrete what do you add to the mix last sand water or cement mix?
The water should be added last. All the aggregate materials and the cement should be thoroughly mixed before the water is added.
What effect has the quantity of mixing water have upon the quality of concrete?
the strength of concrete is effected by water /cement ratio as the water/cement ratio increases the strength of the concrete decreases
Is a compound irreversible?
That depends on what is being mixed together. Two examples of this are: If you mix sand, gravel, and water it is reversible and you can separate the mixture back to its original three parts. If you mix sand, gravel, water, and cement powder it is not reversible as the water will react with the cement powder creating liquid cement and the sand and gravel will form concrete with the liquid cement. After a few hours the liquid cement in the concrete will set and the concrete mixture will become as hard as rock. It is now no longer possible to separate the mixture back to its original four parts.
