Introduction to Chemical Reactions

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Presentation transcript:

Introduction to Chemical Reactions Chemical Name Chemical Formula Molar Mass % Composition Observations Sodium Hydrogen Carbonate Calcium Chloride Phenol Red Record observations as chemicals are mixed together: 1. 2. 3. 4.

Define the following terms: Reactant Product Exothermic Endothermic Chemical reaction Chemical equation Law of Conservation of mass

Data Table # CaCl2 NaHCO3 Water Phenol Red Observations 1 2 3 4 5 6 7 8 9

Conclusion Questions: 1. What combination(s) of chemicals resulted in an exothermic change? 2. What combination(s) of chemicals resulted in an endothermic change? 3. Which combination(s) of chemicals resulted in physical changes? Explain. 4. Which combination(s) of chemicals resulted in chemical changes? 5. Which combination(s) of chemicals resulted in no change? 6. Which combination(s) of chemicals produced a gas? 7. Which combination(s) of chemicals produced a color change? 8. What were the reactants in the original reaction carried out yesterday? 9. What do you think the products were in the original reaction carried out yesterday? 10. How could we use this lab to prove the Law of Conservation of Mass?