Classification of Matter I Composition of Matter Classification

Classification of Matter I. Composition of Matter

Classification of Matter II. Properties of Matter A. Physical Changes -a ______ in ____, _____, or _____ of _____ -_______ of _______ -____ of ______ -_____ of _____ - still has _________ B. Chemical Changes -a ______ in ________ in a ____ to a _________ -_______ of _______

Classification of Matter II. Properties of Matter B. Chemical Changes -____ of _______ 1. Energy -______ is _______ or ____ -____, _____, or ______ 2. Chemical -_____ of ________ -_____ of _______ in _______ -_____ of __________ (______ out of ____) -_______ -___ ______ (____ or ____ in _______ or _______), _______of ____

Classification of Matter II. Properties of Matter B. Chemical Changes 1. Hypothesis: 2. Prediction: 3. Gather Data: A. Safety:

Classification of Matter II. Properties of Matter B. Chemical Changes 3. Gather Data: B. Procedure: 1. Using the top-loading electronic balance, mass 0. 5 g of Na. HCO 3 into an evaporating dish. 2. Using a 10 -m. L graduated cylinder, measure out 4. 0 m. L of 1. 0 M HCl solution. Add 5 drops of Universal Indicator solution to the HCl solution in the graduated cylinder. Add the HCl solution to the contents of the evaporating dish. Record evidence of chemical change _____________________________ http: //www. cartage. org. lb/en/themes/Sciences/Chemistry/Analyticalchemistry/Lab. Equipment. htm

Classification of Matter II. Properties of Matter B. Chemical Changes 3. Gather Data: B. Procedure: 3. Repeat Step 2, adding a second measure of HCl to the contents of the evaporating dish. Record evidence of chemical change_________________ 4. Heat the contents of the evaporating dish to dryness on the hot plate. 4. Analyze Data: A. In the lab, you massed out 0. 5 g of Na. HCO 3. Is Na. HCO 3 a substance or a mixture? ________________ B. Is Na. HCO 3 an element or compound? __________

Classification of Matter II. Properties of Matter B. Chemical Changes 4. Analyze Data: C. In the lab, you added 4. 0 m. L HCl solution, which is made by dissolving 36. 5 g of HCl into enough water to make one liter. Is the HCl solution a substance or a mixture? _______ D. Is HCl an element or a compound? _______ 5. Draw Conclusions: E. When HCl solution was added to the Na. HCO 3 the first time, did a chemical change take place? ______ How did you know? __________________________

Classification of Matter II. Properties of Matter B. Chemical Changes 5. Draw Conclusions: F. After you added a second 4. 0 m. L HCl solution to your evaporating dish and heated the material in the dish to dryness, a white crystalline solid was left over in the dish. Was this white crystalline solid Na. HCO 3? ______ How do you know? __________________________ G. What do you think the white crystalline solid in the evaporating dish was? ________ H. What do you think the colorless, odorless, gas given off when you added the HCl solution to the Na. HCO 3 was? ______