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Activity Title: “Mole Conversion Using Scratch”

Subject Area(s): Standard Chemistry 1

Computer Science Tools: Scratch

Grade Level: 9-12

Time Required: 30 minutes

Recommended Group Size: Individual Work

Summary: Using an existing Scratch simulation, students will identify and complete different mole conversion problems when prompted by a question. Students will answer the questions based on the demos and their prior knowledge.

Computer Science Connection: Students will use Scratch.

Keywords: Chemistry, Scratch, Mole Conversion

Educational Standards:
Chm.2.2.4 Analyze the stoichiometric relationships inherent in a chemical reaction

Chm.2.2.4

· Use mole ratios from the balanced equation to calculate the quantity of one substance in a reaction given the quantity of another substance in the reaction. (given moles, particles, mass, or volume and ending with moles, particles, mass, or volume of the desired substance)

Pre-Requisite Knowledge:
First, students will need to review your notes on mole conversion. Students should be familiar with the following vocabulary terms: moles, volume, atoms, mass, molar mass, molar volume, and Avogadro’s number.

Learning Objectives: Students will be able to:
-Correctly solve stoichiometric calculations to convert between moles, particles, and volume.

Preparation: Have the students write out all WORD/DESCRIPTIVE calculations, NUMERICAL calculations, and correct answers.

Materials List: Individual student computers with Scratch simulation loaded on them: https://scratch.mit.edu/projects/69818658/

Assessment: This can be used for either formative or summative assessment after or during the mole conversion unit. This works well as a large group activity or individual activity depending on time and teacher preference.

Results/Conclusions: Students should be able to correctly answer all of the questions about mole conversions. Students should use Scratch as a review game or study tool.

Key for Worksheet:

PROBLEM / SCRATCH COMMANDS / CALCULATION ANSWER
1 / VOLUME / MOLAR VOLUME / D / --- / 0.607 mol
2 / VOLUME / MOLAR VOLUME / D / E / 3.66 E 23 atoms
3 / VOLUME / MOLAR VOLUME / D / E / 26.8 g
4 / MOLE / MOLAR VOLUME / C / --- / 305 L
5 / MOLE / MOLAR MASS / C / --- / 600. g
6 / MOLE / AVOGADRO’S NUMBER / C / --- / 8.19 E 24 atoms
7 / MASS / MOLAR MASS / D / E / 6.91 L
8 / MASS / MOLAR MASS / D / --- / 0.308 mol
9 / MASS / MOLAR MASS / D / E / 1.86 E 23 atoms
10 / ATOMS / AVOGADRO’S NUMBER / D / E / 99.6 g
11 / ATOMS / AVOGADRO’S NUMBER / D / E / 503.6 L
12 / ATOMS / AVOGADRO’S NUMBER / D / --- / 2.25 mol