Names: Period: Chemical Change Lab Purpose: To observe evidence of chemical changes. Objectives: To identify and record data that serves as evidence for a chemical change. To understand the difference between a reactant and product for a chemical reaction. Data Table: Title of Data Table: _______________________________________________________________________ Solution Observation (Color, Makeup, Heat Production, etc.) 1.0M Copper(II) Nitrate (Alone) 1.5M Sodium Hydroxide (Alone) 1.0M Copper(II) Nitrate mixed with 1.5M Sodium Hydroxide Chemical Equation: Copper(II) Nitrate + Sodium Hydroxide→ Copper(II) Hydroxide + Sodium Nitrate Before Heating Copper(II) Hydroxide and Sodium Nitrate Mixture After Heating Copper(II) Hydroxide and Sodium Nitrate Mixture Chemical Equation: ∆ Copper(II) Hydroxide→ Copper(II) Oxide + Water After Cooling Copper(II) Oxide and Water After Adding 1.5M Hydrochloric Acid to Copper(II) Oxide and Water Mixture Chemical Equation: Copper(II) Oxide + Hydrochloric Acid→ Copper(II) Chloride + Water Aluminum Granule Alone Mix Aluminum Granule with Copper(II) Chloride and Water Mixture Chemical Equation: Copper(II) Chloride + Aluminum→ Copper + Aluminum Chloride Hydrochloric Acid + Aluminum→ Hydrogen + Aluminum Chloride Results: List 4 types of observations that indicate when a chemical change has occurred. What are some causes of chemical changes? (Give two specific examples) In what ways is heat involved in a chemical change? (Give two specific examples) Conclusion: What is a chemical change? What is the difference between a product and a reactant of a chemical change? Why is it possible to recycle substances? (Explain by using chemical reaction and changes vocabulary)
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