You will now evaluate and present your findings from the investigation you conducted. Write a paragraph to show what you found. Remember to:

Question

Draw a conclusion and make a claim. What do these reactions say about substances and chemical reactions that would hold true in most cases?
Use evidence to support your analysis and conclusion.
Explain your analysis and conclusion.
Use the rubric to check your work before submitting it to the teacher.

Answer 1

After conducting my investigation, it is clear that chemical reactions involve the breaking and forming of bonds between substances. The evidence from various reactions supports this claim. For example, when the metal magnesium is heated, it reacts with oxygen from the air to form magnesium oxide. Similarly, the reaction between hydrochloric acid and sodium hydroxide results in the formation of salt and water. These reactions demonstrate that substances can undergo chemical changes, resulting in the creation of new substances. This investigation also highlights the conservation of mass in chemical reactions, as the total mass of the reactants is equal to the mass of the products. Overall, these findings suggest that in most cases, chemical reactions involve the rearrangement of atoms in substances to form new ones while conserving mass.