Which of the following is not a feature of chemical change?
(I) Original substance can be obtained by simple physical methods.
(II) It is a temporary change.
(III) The new substances formed have properties different from those of the reacting substances.

I, II

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I, III

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II, III

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All of the above

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Solution

The correct option is B I, II
One or more new substances are formed in a chemical change. The new substances formed have properties different from those of the reacting substances. A chemical change is always accompanied by the absorption or evolution of energy in the form of heat, light or sound. Chemical changes are permanent changes and the new chemical substances formed cannot be separated using physical methods.

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Similar questions

Q. Sate which of the following pertains to- chemical changes.
a] substance retains its identity
b] The change is permanent
c] No new substance is formed.
d] is easily reversible
e] Produces one or more new substance in its composition.
f] The change is temporary
g] The composition and properties of the original substance are not altered.

Q. Which of the following statements are correct with respect to chemical reactions?
(i) Chemical composition of original substance changes
(ii) Formation of new substances takes place
(iii) Original substances can be obtained back from the new substances

Fill in the blanks with suitable word..

A ..................change is a change in which a new substance is formed whose properties are different from those of the original substances.

Q. The following are the observations of changes that have taken place. Align them to either chemical change or a physical change.

Study the information given below:

1) Some substances are formed when two or more elements combined together chemically.
2) Properties of these substances are different from their respective constituents.
3) These substances cannot be broken down into their respective constituents by physical methods.

Which of the following substance has the properties listed above?

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Which of the following is not a feature of chemical change?(I) Original substance can be obtained by simple physical methods.(II) It is a temporary change.(III) The new substances formed have properties different from those of the reacting substances.

Which of the following is not a feature of chemical change?
(I) Original substance can be obtained by simple physical methods.
(II) It is a temporary change.
(III) The new substances formed have properties different from those of the reacting substances.