Evidence Of Physical & Chemical Changes

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| By Txaggie12
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Txaggie12
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Quizzes Created: 1 | Total Attempts: 680
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  • 1/5 Questions

    A chemical change cannot be reversed easily.

    • True
    • False
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About This Quiz

Explore the intriguing world of chemical and physical changes through this quiz. Identify evidence of chemical changes, understand the reversibility of physical changes, and analyze real-world examples to distinguish between the two. Perfect for enhancing conceptual clarity and critical thinking in Chemistry.

Evidence Of Physical & Chemical Changes - Quiz

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  • 2. 

    Ms. Smith's class did a science experiment. The combined vinegar and baking soda in a cup and when the vinegar and baking soda touched each other, they fizzed and bubbled up. The cup over flowed with gases and bubbles. The following experiment was an example of what?

    • Chemical Change

    • Physical Change

    • Fusion Change

    Correct Answer
    A. Chemical Change
    Explanation
    The science experiment described involves the combination of vinegar and baking soda, which results in a fizzy reaction and overflow of gases and bubbles. This indicates a chemical change, as a new substance is formed through a chemical reaction between the vinegar (acetic acid) and baking soda (sodium bicarbonate). The formation of carbon dioxide gas causes the fizzing and bubbling, indicating a chemical change rather than a physical change or fusion change.

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  • 3. 

    Sarah put a sugar cube in a cup and watched what happened. The sugar cube dissolved. When Sarah came to check the cup again the next day, the sugar was back in the cup and the water had evaporated. Which of the follwing was experiment an example of?

    • Chemical Change

    • Physical Change

    • Fusion Change

    Correct Answer
    A. Physical Change
    Explanation
    The experiment described in the question is an example of a physical change. A physical change is a change in the form or state of matter without any new substances being formed. In this case, the sugar cube dissolved in water, which is a physical change as the sugar molecules dispersed evenly throughout the water. However, when the water evaporated, the sugar returned to its original form, indicating that no new substances were formed. Therefore, the correct answer is Physical Change.

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  • 4. 

    All of the following are evidence of a physical change except what?

    • The object can be reversed

    • A light is produced

    • The object freezes

    Correct Answer
    A. A light is produced
    Explanation
    The options provided describe different physical changes. The fact that an object can be reversed suggests that it undergoes a reversible change, which is a characteristic of physical changes. The object freezing is also a physical change, as it involves a change in state from a liquid to a solid. However, the production of light is not typically associated with physical changes, but rather with chemical changes or reactions. Therefore, the correct answer is that a light is produced.

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  • 5. 

    Which of the following is evidence of a chemical change?

    • A change in texture

    • A gas is produced

    • The new substance has conductivity

    Correct Answer
    A. A gas is produced
    Explanation
    The presence of gas being produced is evidence of a chemical change because it indicates that a chemical reaction has occurred. In a chemical reaction, new substances are formed with different properties than the original substances. Gas production is often a result of the formation of new compounds or the release of gas molecules from a compound. This release of gas signifies a chemical change taking place.

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  • Current Version
  • Feb 23, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 13, 2010
    Quiz Created by
    Txaggie12
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