AP Chemistry Unit 4.3: Particulate Representations

Practice AP Chemistry Unit 4.3 questions on translating balanced equations into particulate models that show correct species, relative amounts, phases, and conservation.

[Maximum number: 3]

Answer the following questions relating to the element aluminum, Al.

The following diagram gives an incomplete particulate representation of the reaction. The beaker on the left represents the system before the mixture reacts. Complete the drawing on the right to represent the system after the reaction has occurred. Be sure to include 1) the correct type and number of particles based on the number shown on the left and 2) the relative spacing to depict the appropriate phases.

Figure for Question 4.3 Representations of Reactions question 1 — AP Chemistry

\begin{array}{ll} \text { Al }=\mathrm{Al} \text { atom } & \text { Ag }=\mathrm{Ag} \text { atom } \\ \mathrm{Al}^{3+}=\mathrm{Al}^{3+} \text { ion } & \mathrm{Ag}^{+}=\mathrm{Ag}^{+} \text {ion } \end{array}

The student finds the standard reduction potentials given in the table, which are related to the reaction that occurs.

Table for Question 4.3 Representations of Reactions question 1 — AP Chemistry

For a drawing that shows product formation and indicates the conservation of matter: 1 point
4 Al and 8 Ag particles in the beaker on right (see sample drawing below)
For a drawing that shows product formation and conservation of charge: 1 point
$2 \mathrm{Ag}^{+}$ ions and $2 \mathrm{Al}^{3+}$ ions in the beaker on the right (see sample drawing below) 1 point
6 Ag atoms that are solid and $2 \mathrm{Al}^{3+}$ ions that are aqueous in the beaker on the right

Figure for Answer to Question 4.3 Representations of Reactions question 1 — AP Chemistry

Total for part (d) 3 points

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AP Chemistry Unit 4.3: Particulate Representations

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4.3 Representations of Reactions question 1