A blacksmith grinds the edges of an iron axe against a spinning wheel to sharpen it. Sparks of fire and heat are generated. We can say that it is a:

physical change as iron turns into new metal

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chemical change

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physical change as only the shape of the axe changes

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chemical change as a new substance is formed

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Solution

The correct option is C
physical change as only the shape of the axe changes

A blacksmith grinds the edges of iron axe against a spinning wheel to sharpen it. Sparks of fire and heat are generated due to the friction between the objects. So,we can say that it is a physical change as only the shape of the axe changes.

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Similar questions

Q. A blacksmith grinds edges of iron axe against a spinning wheel to sharpen it. Sparks of fire and heat are generated. We can conclude that -

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

(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 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 :

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

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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