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Discipline: Chemistry

Question topic: Colors of Substances

Source: Originais Teachy

Level of difficulty: Very Easy

(Originais Teachy 2023) - Question Very Easy of Chemistry

Chemistry aims to understand the composition of materials and the chemical reactions between their components. Chemical elements are the fundamental parts of matter. They have their own physical and chemical properties and are represented by symbols. Sulfur, for example, is a chemical element that has a bright yellow color in its pure form. Aluminum, on the other hand, is a white-silver element. Which of these elements has a yellow color?


Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur id consequat justo. Cras pellentesque urna ante, eget gravida quam pretium ut. Praesent aliquam nibh faucibus ligula placerat, eget pulvinar velit gravida. Nam sollicitudin pretium elit a feugiat. Vestibulum pharetra, sem quis tempor volutpat, magna diam tincidunt enim, in ullamcorper tellus nibh vitae turpis. In egestas convallis ultrices.

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Colors of Substances
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Question 1:


Chemistry studies the composition, properties, and reactions of chemical elements, which are simple substances that cannot be decomposed into other simpler substances. Chemical elements have their own characteristics and are represented by symbols. Some chemical elements have characteristic colors, such as cadmium, which is yellow-orange, and copper, which is red-vermilion. Which of these elements has a green color?
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Question 2:


During a visit to a Chemistry laboratory, you notice that there is a test known as the 'flame test' that is used to identify chemical elements by the colors they emit when subjected to a flame. This color is the result of electronic transitions of the element's electrons. Suppose you performed the flame test with five unknown samples and obtained the following colors: red, green, yellow, purple, and blue. Based on this color chart, which chemical element is present in the sample that emitted the green color?
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Question 3:


Source: UNESP
Question 4:


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