Which statement correctly shows that a chemical change is different from a physical change?
Chemical change results in a new substance, while physical change does not.
A physical change alters only the form, size, shape or state of a substance without changing its chemical composition, such as melting ice or cutting paper.
A chemical change involves breaking and forming of chemical bonds, producing one or more new substances with different properties, such as burning wood or rusting iron.
This difference in the formation of new substances is the key distinguishing feature between the two types of change.
Hence, a chemical change results in a new substance while a physical change does not.
Similar Questions
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Balance the following reaction:
\(3\,\text{MnO}_2\,(s) + x\,\text{Al}\,(s) \rightarrow 3\,\text{Mn}\,(l) + y\,\text{Al}_2\text{O}_3\,(s) + \text{Heat}\)
What type of ions exchange between reactants in a double displacement reaction?
Which of the following is a chemical change?
What is generally produced when a metal reacts with an acid?
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The gas evolved when calcium reacts with water is:
When hydrochloric acid reacts with sodium hydroxide to form sodium chloride and water, which type of reaction is primarily demonstrated?
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Fe + H2O4 → Fe3O4 + H2
Which statement best explains why this step is INCORRECT?
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Important Questions from Chemical Reaction
Which of the following statement is/are true?
I. In physical change new substance is formed. substance is formed.
II. In chemical change no new substance is formed.
Which of the following cells involves similar chemical reactions?
The information not obtained from balanced chemical equation is
Oxygen cannot be obtained by which one of the following methods?
Which of the following compound is responsible for tarnishing of silver?
