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Physical Change

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Question 15

Fill in the blanks in the following statements using the words given in the box

(a) Making sugar solution is a …………………. change
(b) A physical change is generally ……………………..
(c) Grinding of wheat grain changes its size. It is a …………….. change.
(d) Iron benches kept in lawns and gardens get ……………… it is a …………….
(e) change because a new ……………… is formed

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Solution

(a) Physical
(b) Reversible
(c) Physical
(d) Rusted, chemical,
(e) substance

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Similar questions

The rusting of an iron object is called:

(a) corrosion and it is a physical as well as a chemical change

(b) dissolution and it is a physical change

(c) corrosion and it is a chemical change

(d) dissolution and it is a chemical change

Q. Fill in the blanks in the following statements:

(a) When carbon dioxide is passed through lime water, it turns milky due to the formation of
(b) The chemical name of baking soda is
(c) Two methods by which rusting of iron can be prevented are and
(d) Changes in which onlyproperties of a substance change are called physical changes.
(e) Changes in which new substances are formed are called changes.

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 :

Q. Question 2
Rusting of an article made up of iron is called

(a) corrosion and it is a physical as well as chemical change
(b) dissolution and it is a physical change
(c) corrosion and it is a chemical change
(d) dissolution and it is a chemical change

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 :

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Physical Change

Standard VII Chemistry

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