Let s s explore what you know!
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- Amie O’Brien’
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1 Let s s explore what you know! Draw a microscopic representation for the reactants and the products in each of these chemical equations. Use the following symbolism to complete the task: W = X = Y = Z = X + Y XY 2 WZ W Z 2 W + 2 YZ 2 WZ + Y 2 XY + WZ XZ + WY Reactions Chemthreads Write the chemical equation corresponding to each of these chemical reactions using the following symbolism: = W = X = Y 1 2 Choose the chemical equation that best describes the chemical reaction depicted in these microscopic representations: a) 3 Z W b) Z W c) 2 Z + W d) 3 Z + 6 W 6 WZ 2 WZ WZ 6 WZ 3 4 a) 2 X + 3 Y 2 b) X + 2 Y 2 c) 2 X + 3 Y 2 d) 7 Y + 4 X + Y 2 XY 3 + Y 4 XY + Y
2 Let s s learn about Equations! Analyze the following microscopic representations of a chemical reaction and complete the table below: Identify the smallest proportion in which the reactants react to give products, i.e. find the smallest number of reactant molecules which will react to form the smallest number of product molecules: + Analyze the following chemical equation and complete the table: 2 Sr + O 2 2 SrO Sr = O = Using the information above, draw a microscopic representation for this chemical reaction starting with 4 atoms of Sr and 2 molecules of O 2. Reactions Your turn! Draw the microscopic representations for this chemical reaction starting with 6 atoms of Sr and 3 molecules of O 2.
3 Let s s learn about Equations! Analyze both the microscopic representation of the reactants and the chemical equation describing this chemical reaction: = W = Y 2 WY 4 W Y 2 Let s use the chemical equation to complete the following table and predict the microscopic representation of the products: s Reactions Your turn! Analyze both the microscopic representation of the reactants and the chemical equation describing this chemical reaction: Fill in the following table and predict the microscopic representation of the products: = X = Y 2 X + Y 2 s
4 Let s s learn about Equations! Analyze both the microscopic representation of the products and the chemical equation describing the chemical reaction: = X = Y Z + 2 XY Y 2 Z + Let s use the chemical equation to complete the following table and predict the microscopic representation of the reactants: Reactions Your turn! Analyze both the microscopic representation of the products and the chemical equation describing the chemical reaction: Fill in the following table and predict the microscopic representation of the reactants: = W WZ + XY = X = Y WX+ YZ
5 Let s s learn about Limiting Reactant! Analyze the following microscopic representation of a chemical reaction and complete the table below: Analyze the difference between this chemical reaction and the previous ones: Difference Identify the smallest proportion in which the reactants react to give products, i.e. find the smallest number of reactant molecules which will react to form the smallest number of product molecules: Analyze the following chemical equation and fill in the table: + 2 Al + 3 Br 2 2 AlBr 3 Al= Br = Using the information above, draw the microscopic representations associated to this chemical reaction starting with 5 atoms of Al and 6 molecules of Br 2. Identify the limiting reactant. Reactions Limiting Reactant Your turn! Draw the microscopic representations associated to this chemical reaction starting with 3 atoms of Al and 9 molecules of Br 2 and identify the limiting reactant. Limiting Reactant
6 Let s s apply what we learned! Draw a microscopic representation for the reactants and the products in each of these chemical equations. Use the following symbolism to complete the task: W = X = Y = Z = + 3 W 2 2 XW 3 XZ 2 + WY WZ 2 + XY 2 XYZ 2 XY + Z 2 2 WZ + Y 2 2 WY + Z 2 Write the chemical equations corresponding to the chemical reactions below using the following symbolism: 1 3 = W = X = Y Reactions 2 4
7 Let s s apply what we learned! Choose the chemical equation that best describes the chemical reaction depicted in these microscopic representations: a) XY 3 + Y a) 6 W WX + 2 W 2 b) 4 XY Y b) W WX c) XY 3 2 X + Y c) 2 W WX + W 2 d) + 6 Y d) W WX + W 2 Predict the microscopic representations of the reactants or the products for the following chemical reactions: 2 W 2 Y 4 W + Y 2 2 X + 6 YZ + 6 Z Reactions + 3 Y WZ W XZ
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