Smitha Middle school



CLAIM – EVIDENCE – REASONINGWrite a scientific explanation that answers the question: When calcium chloride, baking soda, and phenol red are combined is there a physical or chemical change happening?4232166283407Sentence Stems: When you combine… The reason this occurs… I observed… The (things I observed) happened because…00Sentence Stems: When you combine… The reason this occurs… I observed… The (things I observed) happened because…left283691Word Bank: -Chemical/ physical change -Color change-Reaction - Gas formation - Endothermic Reaction - Exothermic Reaction-00Word Bank: -Chemical/ physical change -Color change-Reaction - Gas formation - Endothermic Reaction - Exothermic Reaction-Claim (Write a sentence that states what happens when calcium chloride, baking soda, and phenol red are combined)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________center137511Record observations of the experiment for the “EVIDENCE” 00Record observations of the experiment for the “EVIDENCE” Evidence (Give evidence – such as observations from the experiment- that supports your claim)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________How do you determine the difference between a physical and chemical change? __________________________________________________________________________________________________When we combined the calcium chloride, baking soda, and phenol red did a chemical or physical change occur? __________________________________________________________________________________________________Using the evidence, you collected, answer the questions below. Use this information to help you write your reasoning. Physical Change Chemical Change Was a new substance created? YES/ NO YES/ NODid a reaction happen? YES / NO YES/ NOCan you reverse it? YES / NO YES / NOReasoning (Write a statement that connects the evidence to the claim about what happens when you combine calcium chloride, baking soda, and phenol red- the “WHY” statement) ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ................
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