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Name ______________________________ Class ______________________ Date: October 1, 2010 Discussion Question – Mini-Labs (Properties of Matter) Station 1: Baking Soda, Vinegar, & Fire Materials used for the Experiment: ______________________________________________ __________________________________________________________________________ How was the experiment carried out? ___________________________________________ __________________________________________________________________________ __________________________________________________________________________ List all recorded observations (i.e. Chemical/Physical Properties/Changes, etc): __________ __________________________________________________________________________ __________________________________________________________________________ Based on your observations, what conclusions can you draw? ________________________ __________________________________________________________________________ __________________________________________________________________________ Station 2: Burning Money Materials used for the Experiment: ______________________________________________ __________________________________________________________________________ How was the experiment carried out? ___________________________________________ __________________________________________________________________________ __________________________________________________________________________ List all recorded observations (i.e. Chemical/Physical Properties/Changes, etc): __________ __________________________________________________________________________ __________________________________________________________________________ Based on your observations, what conclusions can you draw? ________________________ __________________________________________________________________________ __________________________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science and Technology 51 The Properties of Matter Name ______________________________ Class ______________________ Date: October 1, 2010 Station 3: Crushing Cans Materials used for the Experiment: ______________________________________________ __________________________________________________________________________ How was the experiment carried out? ___________________________________________ __________________________________________________________________________ __________________________________________________________________________ List all recorded observations (i.e. Chemical/Physical Properties/Changes, etc): __________ __________________________________________________________________________ __________________________________________________________________________ Based on your observations, what conclusions can you draw? ________________________ __________________________________________________________________________ __________________________________________________________________________ Station 4: Drain Cleaner & Epsom Salt Materials used for the Experiment: ______________________________________________ __________________________________________________________________________ How was the experiment carried out? ___________________________________________ __________________________________________________________________________ __________________________________________________________________________ List all recorded observations (i.e. Chemical/Physical Properties/Changes, etc): __________ __________________________________________________________________________ __________________________________________________________________________ Based on your observations, what conclusions can you draw? ________________________ __________________________________________________________________________ __________________________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science and Technology 52 The Properties of Matter Name ______________________________ Class ______________________ Date: October 1, 2010 Station 5: Density Column Materials used for the Experiment: ______________________________________________ __________________________________________________________________________ List all recorded observations (i.e. Chemical/Physical Properties/Changes, etc): __________ __________________________________________________________________________ __________________________________________________________________________ Based on your observations, what conclusions can you draw? ________________________ __________________________________________________________________________ __________________________________________________________________________ Station 6: Yeast, Hydrogen Peroxide, & Fire Materials used for the Experiment: ______________________________________________ __________________________________________________________________________ How was the experiment carried out? ___________________________________________ __________________________________________________________________________ __________________________________________________________________________ List all recorded observations (i.e. Chemical/Physical Properties/Changes, etc): __________ __________________________________________________________________________ __________________________________________________________________________ Based on your observations, what conclusions can you draw? ________________________ __________________________________________________________________________ __________________________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science and Technology 53 The Properties of Matter Name ______________________________ Class ______________________ Date: October 1, 2010 Station 7: Calcium Chloride and Water Materials used for the Experiment: ______________________________________________ __________________________________________________________________________ How was the experiment carried out? ___________________________________________ __________________________________________________________________________ __________________________________________________________________________ List all recorded observations (i.e. Chemical/Physical Properties/Changes, etc): __________ __________________________________________________________________________ __________________________________________________________________________ Based on your observations, what conclusions can you draw? ________________________ __________________________________________________________________________ __________________________________________________________________________ Station 8: Ammonium Nitrate and Water Materials used for the Experiment: ______________________________________________ __________________________________________________________________________ How was the experiment carried out? ___________________________________________ __________________________________________________________________________ __________________________________________________________________________ List all recorded observations (i.e. Chemical/Physical Properties/Changes, etc): __________ __________________________________________________________________________ __________________________________________________________________________ Based on your observations, what conclusions can you draw? ________________________ __________________________________________________________________________ __________________________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science and Technology 54 The Properties of Matter Name ______________________________ Class ______________________ Date: October 1, 2010 Reinforcement Questions 1. Write 2 examples of chemical formulas (use book) ____________________________ 2. Name the four main types of chemical reactions (use book) _____________________ _____________________________________________________________________ 3. List 5 factors that affect the rate of a chemical reaction and explain how each influences the rate. (Use book – Record answers on another of paper) 4. For stations 1, 2, 4, 6, 7 & 8, research each reaction and do the following: Write the chemical equation for the reaction (ex. 2Na + Cl2 2NaCl), characterize the reaction as (endothermic or exothermic), and characterize the reaction as one of the four main types of chemical reactions listed in #2 above. (use: Internet, Book – record answers on another sheet of paper) 5. Describe two ways to compare the densities of unknown substances. Why is density a useful property for identifying matter? ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ 6. After a tree is cut with a chain saw, it is impossible to put the tiny wood chips back together. The process cannot be reversed. Does this mean that cutting trees with a chain saw causes a chemical change in the wood? Explain why or why not. ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science and Technology 55 The Properties of Matter Name ______________________________ Class ______________________ Date: October 1, 2010 7. A glass cylinder contains four liquids in four separate layers. One liquid is water. The 3 3 purple liquid has a density 1.62 g/cm . The yellow liquid has a density of 0.46 g/cm . 3 The red has a density of 0.91 g/cm . What is the order of the liquids in the cylinder? Explain your answer. What will happen if you slip a small, flat chip of wood (density 3 0.85 g/cm ) into the cylinder? ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ Cibwa salt is prepared from a kind of grass found in Zambia, Africa. 8. Does step A involve a chemical or a physical change? Explain your answer. ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ 9. In step B, the grass burns and turns into ash. However, the salt remains in the ashes and dissolves in Step D. What does this tell you about the properties of the salt? ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science and Technology 56 The Properties of Matter
