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Toolbox: Activity link - Balancing Chemical Equations https://phet.colorado.edu/en/simulations/balancing-chemical-equations 1. Claim: How does the law of conservation of mass apply to chemical reactions? (2 points)2. Evidence:

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Toolbox: Activity link - Balancing Chemical Equations https://phet.colorado.edu/en/simulations/balancing-chemical-equations 1. Claim: How does the law of conservation of mass apply to chemical reactions? (2 points)2. Evidence: Answer each question below, applying the law of conservation of mass. The PhET simulation can be used to help. (4 points) A. Ifl start with 329 S and 56 9 Fe, how many grams of product (FeS) will I have? (Assuming that all of the reactants are used up.) S + e ==> Fe B. Complete the drawing for the sample reaction below to show the law of conservation of mass, when XY is produced. . +> . C. Balance the following equations to show the law of conservation of mass: C. Balance the following equations to show the law of conservation of mass: Physical Science B |1-7 Lab| Conservation in Chemical Reactions 1. CH4 + 02 - CO2+ HO 2. Al + Cl2 - _ AICl3 3. CH20 + H2- CH3OH3. Reasoning: Explain how the evidence supports your claim. Explain how the evidence from question 2 shows the law of conservation of mass and what it means to balance a chemical equation. (4 points) Rubric for Grading Reasoning clearly answered the question and explained your position. You have used multiple pieces of data to back up your claim. The data used is specic and accurate. You have used explicit reasoning that links all your evidence to your claim along with explaining how and why the evidence supports the claim. used data to back up your claim. The data used is specic and accurate. Your reasoning links most pieces of evidence to the claim and explains how your evidence supports the claim. used specic data to support your claim but the data is not accurate. Your reasoning links refer to the data but your statements do not show that the data supports the claim. You left this blank. Please ask for help. tried to write a claim but it wasn't on track. Ask for help. No evidence provided. Please ask for help. You have tried to use data to support your claim but there are problems with the type of data you used and its accuracy. Please ask for help. No Reasoning Provided. Please ask for help. You have tried to answer this question but the reasoning is not connected with the evidence or claim. Please ask for help

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