Yes
Dissolving sodium carbonate in water is a physical change, not a chemical change. This is because the chemical composition of sodium carbonate remains the same before and after dissolving.
The dissolution of sodium chloride in water is considered a physical change because no new substances are formed - the sodium chloride remains as sodium and chloride ions in the water solution.
Adding calcium chloride to sodium carbonate would be a chemical change because it results in the formation of new substances (calcium carbonate and sodium chloride) with different chemical properties than the original reactants.
No. Sodium chloride is a neutral salt so if it's dissolved in pure water (pH 7) then the pH won't change (as it doesn't release or take in hydrogen ions)
Dissolving sodium hydroxide in water is considered a physical change because it involves breaking down the solid sodium hydroxide into individual ions without changing the chemical composition of the substance. The process is reversible, and the resulting solution can be separated to recover the original components.
Dissolving sodium chloride in water is a physical change because the chemical composition of sodium chloride remains the same. The sodium and chloride ions are simply dispersed throughout the water, but they can still be recovered by evaporating the water.
This is a physical process, but sodium and chloride ions ar formed.
This is a physical process, but sodium and chloride ions ar formed.
Dissolving sodium chloride (table salt) in water is a physical change. When sodium chloride dissolves, it dissociates into its constituent ions (sodium and chloride) but retains its chemical identity. The process is reversible; the salt can be recovered by evaporating the water, demonstrating that no new substances are formed.
Dissolving is a physical change because the molecule of sodium chloride remain unchanged.
Dissolving sodium carbonate in water is a physical change, not a chemical change. This is because the chemical composition of sodium carbonate remains the same before and after dissolving.
The chemical formula of sodium chloride is not changed by dissolution.
The dissolution of sodium chloride in water is considered a physical change because no new substances are formed - the sodium chloride remains as sodium and chloride ions in the water solution.
Yes. Dissolving is a physical change because it does not change the chemical composition of either the solute or the solvent.
No. Sodium chloride in water dissolves into its individual Na+ ions and Cl- ions due to the polarity of the water molecule. This is not a bonding between water and sodium chloride. In fact there is no chemical reaction at all taking place. The dissolving of the sodium and chloride ions by water is a physical change, and can be reversed by letting the water evaporate.
The dissolving of sodium hydroxide in water is a physical change because no new substances are formed. Sodium hydroxide breaks down into its ions in the water, but its chemical composition remains the same.
Sublimation is a physical change.