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Chapter 2: Q158CP (page 88)

Which of the following steps in an overall process involve(s) a physical change and which involve(s) a chemical change?

Short Answer

Expert verified

In the diagram,

  1. Chemical change
  2. Physical change
  3. Chemical change
  4. Chemical change
  5. Physical change

Step by step solution

01

Explanation of first three reactions

  1. The new compound formation consists of both red and blue atoms. It is a chemical reaction.
  2. The molecules can divide which consists of blue atoms and those that consist of both red and blue atoms. It is a physical change.
  3. The atoms can be formed from molecules and it is possible when there is a chemical change.
02

Explanation of next two reactions

4.The formation of new molecules consists of one red and 2 blue atoms. It is a chemical change.

5.There are only changes in the matter state. It is a physical change.

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Most popular questions from this chapter

Choose the correct answer. The difference between the mass number of an isotope and its atomic number is (a)directly related to the identity of the element; (b) the number of electrons; (c) the number of neutrons; (d) the number of isotopes.

Correct each of the following statements:

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