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Modern Periodic Table

Physical prop...

Question

Physical properties are those which can be observed or measured without changing the composition of matter. They are used to observe and describe matter.

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Solution

The correct option is A True
Physical properties are those which can be observed or measured without changing the composition of matter. They are used to observe and describe matter. Texture, colour, odour. melting point, boiling point, density, solubility, polarity, conductivity, ductility, malleability, lustre, sonority, etc., are some examples of physical properties.

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Q. State true or false.
Physical properties are those which can be observed or measured without changing the composition of matter. They are used to observe and describe matter.

Q. Assertion :Physical properties are those that can be observed without changing the identity of the substance. Reason: Melting point,density and pH are physical properties.

Q. The physical property of a substance can be measured without changing its chemical composition. Which of the following are physical properties?

Q. Matter undergoes a change. The changes are of two types : Physical and chemical change. A physical change is a change that involves only a change in the physical state of matter.
Its chemical properties remain the same. Usually increasing the temperature of applying pressure or both brings about a physical change. On reversing the condition, i.e., reducing the temperature or reducing the pressure or both, the original state of matter is restored. In other words, physical changes are reversible. A chemical change is a change that involves a change in the chemical composition of matter. A new substance is formed. In a chemical change, the chemical and physical properties of the substance is formed. In a chemical change, the chemical and physical properties of the substance formed will be different from the original substance. When zinc carbonate is heated and cooled, the change(s) that are observed are :

Q. Matter undergoes a change. The changes are of two types: Physical and chemical change.

A physical change is a change that involves only a change in the physical state of matter. Its chemical properties remain the same. Usually increasing the temperature or applying pressure or both bring about a physical change. On reversing the condition, that is reducing the temperature or reducing the pressure or both, the original state of matter is restored. In other words, physical changes are reversible.

A chemical change is a change that involves a change in the chemical composition of matter. A new substance is formed. In a chemical change, new chemical and physical properties of the substance are formed. In a chemical change, the chemical and physical properties of the substance formed will be different from the original substance.

In a chemical change, the properties that change are :

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