What chemical change occurs when a wax candle burns?
(a) The wax near the flame melts.
(b) The molten wax is pulled upwards through the wick.
(c) The wax within the wick is heated to about
(d) The heated wax molecules combine with oxygen molecules.
The correct option for the statement “The change occurring while burning of wax candle”.
Answer to Problem 3RAT
The correct option for the statement “The change occurring while burning of wax candle” is option (d).
Explanation of Solution
The transformations of matter are of two types. The types are physical change and chemical change. A chemical change occurs when two or more substances combine to form new and different substances.
When the wax candle is burned, the wax near the flame melts because of the heat. The state change happens from solid to liquid. It is a physical change.
When the heated wax is pulled upwards through the wick or when the wax within the wick is heated, no two substances combine to form new substances. So, both of them are not chemical changes.
When heated wax molecules combine with oxygen molecules they form carbon dioxide and ash. As two substances are combining to form new substances, it is a chemical change.
Conclusion:
Therefore, the correct option is option (d).
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