Conservation of matter and chemical reactions - Teachers in Industry：物质和化学反应的教师行业的保护.docxVIP

Stage 1 – Desired ResultsEstablished GoalsWhat content standards and program goals will the unit address?HS-PS1-2—Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical propertiesHS-PS 1-7—Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.NGSS PracticesPlan and Carry Out InvestigationsConstructing ExplanationsAnalyzing and Interpreting DataUsing Math and Computational ThinkingTransferThe law of conservation of mass applies to all chemical reactions that occur in the universe. Chemical reactions (elemental interactions) follow a set of known rules when taking place.All matter that is on the Earth has always been here, it just cycles through different forms.MeaningUnderstandingsThe products of a chemical reaction can be determined by the valence electron arrangement of the reactants.Chemical reactions can be modeled in various ways, but the general pattern stays the same.Matter is constantly cycling different forms, but is never created or destroyed.Essential Questions What happens to matter when it reacts with other matter?How do chemists use the formula of the product they desire to determine what reactants to use?What happens to the gasoline in your car when you go for a drive?AcquisitionStudents will know …Chemical compounds form due to the arrangement of valence electrons in each elementIn a chemical reaction the atoms rearrange, but do not change composition.Most chemical reactions follow distinct patterns in product formation (synthesis, decomposition, displacement, combustion, Redox)Matter is not created or destroyed in a chemical reaction, it only changes formStudents will be skilled atPlanning and carrying out an investigationAnalyzing Data from investigationConstructing an explanation from the data including a mathematical representati