Chemical Change Online Practice

Question

Complete this assessment to review what you’ve learned. It will not count toward your grade.
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Question
Use the chemical reaction to answer the question.

2H2O2→2H2O +O2
Which statement about the reaction is correct?

(1 point)
Responses

The H2O and O2 produced have the same mass as the original H2O2.
The H 2 O and O 2 produced have the same mass as the original H 2 O 2 .

Atoms of H2 and O2 are lost during the reaction.
Atoms of H 2 and O 2 are lost during the reaction.

The reaction creates new atoms of H2O and O2.
The reaction creates new atoms of H 2 O and O 2 .

H2O2 has the same properties as H2O and O2.
H 2 O 2 has the same properties as H 2 O and O 2 .
Remaining Attempts : 3
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Answer 1

The correct statement about the reaction \(2H_2O_2 \rightarrow 2H_2O + O_2\) is:

The H2O and O2 produced have the same mass as the original H2O2.

This is because of the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. The mass of the reactants (in this case, hydrogen peroxide) is equal to the mass of the products (water and oxygen gas).

The other options are incorrect because:

• No atoms are lost during the reaction.
• The reaction does not create new atoms; it rearranges the atoms of the reactants to form the products.
• Hydrogen peroxide has different properties than water and oxygen gas.