Ask Question
12 March, 16:12

Which is not proof that a chemical change has occurred?

a. the color changes

B. a precipitate forms

C. the substance melts

D. bubbles are produced

+5
Answers (2)
  1. 12 March, 17:20
    0
    the substance melts

    Choice C

    Explanation:

    A chemical change refers a process by which one substance changes into a new substance with different properties with the formation of one or more new substances.

    Color change, formation of a precipitate and production of bubbles all indicate the occurrence of a chemical change. On the other hand, melting is purely a physical change since no new substance is formed and the process can easily be reversed through freezing.
  2. 12 March, 19:58
    0
    C

    Explanation:

    When a substance undergoes a chemical change, the chemical properties of the substance changes, and it usually combines with another substance or forms products that form a precipitate.

    When a substance melts, there is not any actual chemical change to the substance. Yes, there is a physical change that alters the physical properties of the substance, but no chemical change happens.

    A colour change can occur because of two substances interacting, and in this interaction, the substances chemically alter each other.

    A precipitate being formed and bubbles being produces is a result of chemical changes that result in the chemicals producing products in a different state than what they originally came in.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Which is not proof that a chemical change has occurred? a. the color changes B. a precipitate forms C. the substance melts D. bubbles are ...” in 📘 Biology if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers