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Unit 2 Learning

Unit 2 Learning Statements - Chemical Formulas & Reactions

Chemical Formula states the number of atoms of each element in a compound
Periodic Table shows the atomic symbol or abbreviation for each element
Subscript number written slightly lower after an atomic symbol and states the number of atoms for that element
Atomic Symbol with No Subscript states there is only one atom of the element
Total Number of Atoms in a Molecule Count the atoms of each element and add the numbers
Reactants found on the left side of the arrow in a chemical reaction
Products found on the right side of the arrow in a chemical reaction
Evidence of a Chemical Reaction *production of gas or bubbles *changes in temperature *production of a precipitate (solid formed) *color change *formation of a new substance *produces light
Law of Conservation of Mass in a chemical reaction , the mass of the reactants will equal the mass of the products
Law of Conservation of Mass in a chemical reaction, the number of atoms for the reactant side will equal the number of atoms on the product side
Reactants elements and compounds located on the right side of the arrow in a chemical reaction
Products elements and compounds located on the left side of the arrow in a chemical reaction


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