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Multiple Choice
Which of the following is an example of a chemical reaction?
A
Rusting of iron
B
Melting of ice
C
Dissolving sugar in water
D
Boiling of water
Verified step by step guidance
1
Understand the definition of a chemical reaction: A chemical reaction involves the transformation of one or more substances into different substances with new chemical properties.
Identify the process of rusting of iron: Rusting is a chemical reaction where iron reacts with oxygen and water to form iron oxide, a new substance.
Analyze the process of melting of ice: Melting is a physical change where ice changes state from solid to liquid without altering its chemical composition.
Examine the process of dissolving sugar in water: Dissolving is a physical change where sugar molecules disperse in water but do not change chemically.
Consider the process of boiling of water: Boiling is a physical change where water changes state from liquid to gas without a chemical transformation.