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Chapter 1: Problem 88

In the chemical reaction for the "burning" of sugar, \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{O}_{2} \rightarrow 6 \mathrm{CO}_{2}+6 \mathrm{H}_{2} \mathrm{O}\), which substances are the reactants and which are the products? Does this equation represent a chemical change or a physical change?

Short Answer

Expert verified
The reactants in the given chemical reaction are glucose (\(\mathrm{C_{6}H_{12}O_{6}}\)) and oxygen (\(\mathrm{O_{2}}\)), and the products are carbon dioxide (\(\mathrm{CO_{2}}\)) and water (\(\mathrm{H_{2}O}\)). This reaction represents a chemical change, as new substances with different chemical compositions are formed.

Step by step solution

01

Identify the reactants and products in the given chemical equation

The given chemical reaction is: \(\mathrm{C_{6}H_{12}O_{6}} + 6\;\mathrm{O_{2}} \rightarrow 6\;\mathrm{CO_{2}} + 6\;\mathrm{H_{2}O}\) In a chemical equation, the reactants are written on the left side of the arrow and the products appear on the right side of the arrow. In this case, the reactants are: - Glucose (\(\mathrm{C_{6}H_{12}O_{6}}\)) and - Oxygen (\(\mathrm{O_{2}}\)) The products are: - Carbon dioxide (\(\mathrm{CO_{2}}\)) and - Water (\(\mathrm{H_{2}O}\))
02

Determine if the reaction represents a chemical change or a physical change

When a chemical reaction occurs, the atoms are rearranged to form new substances, and this process is called a chemical change. If there is only a change in the physical state without any change in the chemical composition, it is called a physical change. In the given reaction, glucose and oxygen are converted into carbon dioxide and water, which have different chemical compositions than the reactants. Therefore, this reaction represents a chemical change.

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Most popular questions from this chapter

What is an element? How many elements are known today?

You are presented with a block made of some pure metal and told the metal is gold, but you have your doubts. Using a thermometer, how can you determine whether the metal is gold?

Which of the following are elemental substances and which are compounds: baking soda, \(\mathrm{NaHCO}_{3}\); graphite, \(\mathrm{C} ;\) dry ice, solid \(\mathrm{CO}_{2}\); metallic sodium, Na; metallic mercury, Hg?

When you eat sugar \(\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\right)\), it is eventually converted into \(\mathrm{CO}_{2}\) and \(\mathrm{H}_{2} \mathrm{O}\), which you exhale. If you exhale onto a cold window, the window fogs up. (a) What chemical change is being mentioned here? (b) What physical change is being mentioned here? (c) \(\mathrm{CO}_{2}\) is a solid that sublimes at \(-78^{\circ} \mathrm{C}\). Temperatures on planet Earth almost never get this cold. What does that tell you about the fog on the window?

Refer to the list of elements that appears on the inside front cover. What are the symbols for the elements lead, molybdenum, tungsten, chromium, and mercury?
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