Water boiling, melting ice, tearing paper, freezing water and crushing a can are all examples of physical changes. On the other hand, chemical changes are a bit different. In a chemical change, a new substance is formed. The chemical change also usually involves heat, burning, or other interaction with energy.

Burning of paper is not a physical change. Ash is formed as result of burning of paper which is a new product. Chemical change a new substance must form. These changes are irreversible in nature.

For instance, the tearing of paper is physical as it’s still paper even when you tear it. A chemical reaction is when the substance is chemically change. When paper is burn, the cellulose in the air reacts with the oxygen to form carbon dioxide and water. Also, the action of burning paper can’t be reversed.

Answer and Explanation: No, boiling water is NOT a chemical reaction, but it is a physical change. When water, H2 O, is in liquid form, it can be heated to a boil. Boiling occurs by the process of convection, in which water closest to the heat source becomes warm and rises.

Boiling an egg is a chemical reaction. The heat taken in by the egg causes permanent changes to the molecular structure of the egg, creating a new…

Dissolving salt in water may be written as a chemical reaction, where sodium chloride dissociates into Na+ ions and Cl– ions in water. When salt dissolves, the ionic bonds between the atoms break. The reactant (sodium chloride or NaCl) differs from the products (sodium and chloride ions), so a chemical change occurs.

Melting is an example of a physical change . A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. Physical changes can further be classified as reversible or irreversible.

Boiling waterBoiling water is an example of a physical change and not a chemical change because the water vapor still has the same molecular structure as liquid water (H2O).

How does it happen? When simple sugars such as sucrose (or table sugar) are heated, they melt and break down into glucose and fructose, two other forms of sugar. Continuing to heat the sugar at high temperature causes these sugars to lose water and react with each other producing many different types of compounds.

The polar water molecules attract the oppositely charged polar areas of the sucrose molecules and pull them away, resulting in dissolving. Since the ions in salt and the molecules bin sugar are very different, their solubilities tend to be different.

In a solution, the solute is the substance that dissolves, and the solvent is the substance that does the dissolving. For a given solvent, some solutes have greater solubility than others. For example, sugar is much more soluble in water than is salt.

You get sugary salt or salty sugar. No chemical reactions will take place. As far as part of your diet, either one consumed in small amounts causes no issues and can even be part of your nutrient intake—carbohydrate energy from sugar, sodium (Na+) and chloride (Cl-) ions from the salt.