Take this as a note. A mixture is always a physical change, as you can simply evaporate the water and have Urea again. Chemical change always involves the changing of reaction properties amongst its reactants.
This is a fun question, because the answer is "BOTH".
CHEMICAL: Mixing water with cement hydrates cement components. Hydration is a class of chemical reaction, or change. Notably, quicklime, or calcium oxide, becomes hydrated to calcium hydroxide, a reaction that releases heat.
PHYSICAL: Cement powder mixed with water liquid produces a solid physically distinct from the original constituents.
Ask yourself - "does water react with alcohol?" I hope that your answer is no.
Mixing alcohol and water is a physical change because the chemical identity of neither one changes. They simply mix but remain chemically the same.
Dissolution is a physical process.
It is a physical change.
No, it is physical
Mixing salt and pepper is a physical change
chemical
It is a Physical change
Actually both physical and chemical changes are happening during cement mixing.
Mixing is a physical process.
physical change
Physical
No, it is physical
Mixing salt and pepper is a physical change
Physical
It depends on what you are mixing it with.
chemical
it is a chemical change
physical :)
It is a Physical change
both chemical and physical