![]() ![]() The mass of a substance does alter in a chemical change. One of the great examples among many examples of physical changes of matter is cutting. (5) The mass of a substance does not alter in a physical change (4) Very little heat or light energy is usually absorbed or given out in a physical changeĪ lot of heat or light energy is absorbed or given out in a chemical change. When the mercury found in a thermometer comes into contact with high temperatures, its size expands, but its nature. When a sheet of paper is torn into several pieces. (1) No new substance is formed in the physical change.Ī new substance is formed in a chemical change. Below is a list of physical changes as an example: When an ice cube is placed near the fire and it melts, it goes from a solid state to a liquid, but without losing its nature. ![]() they get converted into entirely new substance.įor Example : Burning of magnesium ribbon, Rusting of iron, Formation of curd from milk, Cooking of food etc. In a chemical change, the substances involved change their identity i.e. The changes in which new substance are formed, are called chemical changes. They can be easily returned to their original form by some physical changes.įor Example : Freezing of water, Boiling of water, Condensation of steam, Making a solution, Glowing of electric bulb, stretching of rubber band, cutting or tearing a piece of paper etc. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape. In a physical change, the substances involved do not change their identity. The changes in which no new substance are formed are called physical changes. ![]() Physical and Chemical Changes Physical Changes ![]()
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