It depends upon nature of substances for example when Glucose or Salt are dissolved in water no new substance is formed so these are physical changes but when Ammonia gas is dissolved in water Ammonium and hydroxide ions are formed so it is a chemical change.
The chemical bonds in the original substances are broken down, and new chemical bonds are formed with the other substance.
When a substance dissolves in another but can be recovered by evaporation, it exemplifies a physical change. This occurs because the original substances retain their chemical identities, and no new compounds are formed. For example, when salt dissolves in water, it spreads uniformly throughout the liquid but can be separated again by evaporating the water, leaving the salt behind. Thus, the process is reversible, highlighting the nature of physical changes.
When a substance dissolves in a solvent it is combined with the solvent to form a new compound. This new compound will have different chemical properties than either of the original compounds.
It depends upon nature of substances for example when Glucose or Salt are dissolved in water no new substance is formed so these are physical changes but when Ammonia gas is dissolved in water Ammonium and hydroxide ions are formed so it is a chemical change.
When an ionic substance dissolves in water, the ionic bonds between the cations and anions in the solid lattice must be broken, requiring energy input. Simultaneously, new interactions, specifically ion-dipole forces, are formed between the dissociated ions and the polar water molecules. This process allows the ions to become surrounded by water, leading to the substance's dissolution.
true
No, a new substance is normally formed
no
Changes in physical properties such as color, texture, or density, as well as changes in chemical properties such as reactivity or toxicity, are observed when a substance is changed to another substance. New chemical bonds, molecules, or structures may also be formed during the transformation.
The term used to describe a new substance formed from a chemical reaction would be "product."
False. In a physical change, the substance remains the same even though there may be a change in appearance or state. The molecules of the substance do not rearrange themselves to form a new substance.
There is no new product being formed, eg. its just sugar plus water. It's not like a new substance is being formed. For example a chemical change could be Iron and oxygen, which forms something new, which is Iron Oxide. Get it?? :)