SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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James is correct because only a mixture was formed and no new substances.
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James is correct because a new substance with new properties was formed.
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James is incorrect because no chemical reaction occurred.
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James is incorrect because it was a physical change and not a chemical change.
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Detailed explanation-1: -James observes that a yellow, solid substance has formed when he mixes two clear liquids together. He believes that a chemical change has taken place. Which of the following statements is true? James is correct because only a mixture was formed and no new substances.
Detailed explanation-2: -Color change is a characteristic of a chemical reaction taking place. For example, if one were to observe the rusting of iron over time, one would realize that the metal has changed color and turned orange. This change in color is evidence of a chemical reaction.
Detailed explanation-3: -1 Answer. This represents a chemical change.
Detailed explanation-4: -In a chemical reaction formation of new products take place and mass is conserved in a chemical reaction as the mass of the reactants before the reaction is equal to the mass of the products after reaction. Therefore, option D is correct.