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$KINDERGARTEN EVERYDAY MATH – BASELINE RUBRIC$

Chemical Change Lab - Five Fabulous Reactions! Today you will observe different types of chemical reactions to review the evidence for chemical change and solidify some ideas seen on the Copper lab. The goals of the lab are: • Describe evidence of chemical change for each reaction • Define exothermic and endothermic reactions, as well as precipitate • Observe different types of chemical reactions • Each lab bench has different reactions. You and your group will move from station to station and will follow the directions written on each table. You will be asked to A. describe the evidence for chemical change that you observe, and B. write the number of reactants involved in the reaction and their type (two elements, one element and a compound...) Do not forget to: 1. Wear safety goggles (on your eyes) the entire time! You are working with dangerous chemicals! 2. No horseplay whatsoever will be tolerated! This is your only warning. 3. Tie long hair back—we will be using fire and don’t want your hair to become part of the reactions. 4. Wash all glassware before and after using it. Then return it to its proper place. 5. Put no solids into the sink. Unless your teacher tells you otherwise, only rinse liquids down the sink. Paper towels go into the trash (not into the recycling bin) when you are finished. Use the fewest paper towels that you can. Station 1A Reaction: Mg + O2 MgO 1. Describe the evidence for chemical change you observed: _____________________________________________________________________________________________ _____________________________________________________________________________________________ 2. How many reactants are present and what type of reactants _____________________________________________ 3. How many products are present and what type of products ______________________________________________ 4. Is the reaction exothermic or endothermic? Explain your answer: _________________________________________ 5. Indicate if a precipitate formed: ___________________________________________________________________
Station 1B Reaction: Fe + O2 Fe2O3 1. Describe the evidence for chemical change you observed: _____________________________________________________________________________________________ _____________________________________________________________________________________________ 2. How many reactants are present and what type of reactants _____________________________________________ 3. How many products are present and what type of products ______________________________________________ 4. Is the reaction exothermic or endothermic? Explain your answer: _________________________________________ 5. Indicate if a precipitate formed: ___________________________________________________________________ Station 2A Reaction: Pb(NO3)2 + NaCl PbCl2 + Na(NO3) 1. Describe the evidence for chemical change you observed: _____________________________________________________________________________________________ _____________________________________________________________________________________________ 2. How many reactants are present and what type of reactants _____________________________________________ 3. How many products are present and what type of products ______________________________________________ 4. Is the reaction exothermic or endothermic? Explain your answer: _________________________________________ 5. Indicate if a precipitate formed: ___________________________________________________________________ Station 2B Reaction: Pb(NO3)2 + KI PbI2 + K(NO3) 1. Describe the evidence for chemical change you observed: _____________________________________________________________________________________________ _____________________________________________________________________________________________ 2. How many reactants are present and what type of reactants _____________________________________________
Page 1 and 2: Learning Goals Unit 4: Copper lab,
Page 3 and 4: SECOND DAY We will continue working
Page 5 and 6: Observations before reaction Observ
Page 7 and 8: Next reaction 3) Put a pre-cut piec
Page 9 and 10: 1) Percent recovery is a term used
Page 11: Describe with words any observed pa
Page 14 and 15: Write the group # the ions are in o
Page 16 and 17: Practice Writing Formulas with the
Page 18 and 19: Practice makes perfect! The third r
Page 20 and 21: Naming chemical compounds Now that
Page 22 and 23: It is your turn to practice. The fo
Page 24 and 25: Identification of elements, ions an
Page 28 and 29: 3. How many products are present an
Page 30 and 31: What type of reaction is this? Ther
Page 32 and 33: Practice identifying types of react
Page 34 and 35: B. Heating of a metallic chlorate:
Page 36 and 37: compound1 + compound2 Compound3 + c
Page 38 and 39: 3. The reaction of hydrogen and nit
Page 40 and 41: Follow the instructions for previou
Page 42 and 43: Types of Reactions Combination: A +
Page 44 and 45: Decomposition subtypes When there i
Page 46: 6. Describe how to use gravity filt

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