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🧪 The Stockroom Rescue
MUST DO Area 2 — Option C | Honors Chemistry Unit 3 | SC.912.P.10.5
Task 1 Sort Jars
Task 2 Atomic Data
Task 3 States
Task 4 Labels
Task 5 Inventory
Task 1 — Sort the Element Jars
Drag each jar card onto the correct shelf: METALS, NONMETALS, or METALLOIDS.
Standard T3. Metals are to the LEFT of the staircase on the periodic table; nonmetals to the RIGHT; metalloids straddle the staircase boundary.
📦 Unsorted jar tray — drag jars to the shelves below
Li
Lithium
Z=3
F
Fluorine
Z=9
Al
Aluminum
Z=13
P
Phosphorus
Z=15
Ca
Calcium
Z=20
Br
Bromine
Z=35
Cl
Chlorine
Z=17
Ba
Barium
Z=56
🔩 METALS shelf
💨 NONMETALS shelf
⚗️ METALLOIDS shelf
Ion & Diatomic Table
For each jar, record its classification, ion type, ion symbol, and whether it is diatomic.
Jar
Element
Metal/Nonmetal/Metalloid
Cation or anion?
Ion symbol
Diatomic? (Y/N)
Task 2 — Rebuild Each Element's Atomic Data
Fill in protons, neutrons, electrons, and mass number for each jar element.
Standard T1. Protons = Z. Mass number = protons + neutrons. Electrons = protons (neutral atom).
Jar
Element
Symbol
Z
Isotope tag
Protons
Neutrons
Electrons
Mass #
Isotope Tags — Match the Pairs
Click an isotope tag, then click its matching explanation to pair them.
📌 Isotope tags
Li-6
Li-7
S-32
S-34
Br-79
Br-81
📋 Isotope explanations
Same element (3p); neutrons differ — one is Li-6, one is Li-7
Same element (16p); neutrons differ — one is S-32, one is S-34
Same element (35p); neutrons differ — one is Br-79, one is Br-81
Boron Weighted Average
Complete the boron isotope calculation table.
Isotope
Mass (amu)
Natural abundance
Contribution (amu)
B-10
10.013
19.78%
B-11
11.009
80.22%
Weighted average atomic mass of boron:
amu
Why does the weighted average differ from a simple average of 10.51 amu?
Task 3 — Predict Each Element's State at Room Temperature
Drag each jar card onto the correct shelf: SOLIDS, LIQUIDS, or GASES.
Standard T2. At ~25 °C: all metals are solids; Br₂ is the only nonmetal liquid; F₂ and Cl₂ are gases; P is a solid nonmetal. KMT: strong attractions = solid; weak attractions = gas; balanced = liquid.
🌡 Jar tray — drag onto the state shelves
Li
Lithium
F
Fluorine
Al
Aluminum
P
Phosphorus
Ca
Calcium
Br
Bromine
Cl
Chlorine
Ba
Barium
🧱 SOLIDS shelf
💧 LIQUIDS shelf
💨 GASES shelf
States & Phase Changes Tables
Complete both tables. Use KMT reasoning throughout.
State
Definite shape?
Definite volume?
Particle spacing
Particle motion
Forces of attraction
Phase change
Direction
Energy added or removed?
Which factor wins (KMT)?
Task 4 — Re-Label the Compound Jars
Drag each compound jar to the IONIC or COVALENT shelf, then name each jar and complete the restock labels.
Standard T4. Ionic = metal + nonmetal → no prefixes, use -ide. Covalent = two nonmetals → Greek prefixes (drop mono- on first element).
🏺 Compound jar tray
Li₂O
Jar A — Li, O
CO
Jar B — C, O
BaCl₂
Jar C — Ba, Cl
SO₂
Jar D — S, O
Al₂O₃
Jar E — Al, O
NF₃
Jar F — N, F
🔋 IONIC shelf (metal + nonmetal)
🔗 COVALENT shelf (nonmetal + nonmetal)
Name Each Compound Jar
Jar
Formula
Ionic or covalent?
Correct IUPAC name
Restock Labels — Covalent Shelf
Formula
Name (use prefixes)
Name
Formula
Restock Labels — Ionic Shelf
Formula
Name (use -ide)
Name
Formula
Final Audit (no hints)
Item
Your answer
Task 5 — The Master Inventory
Combine everything from Tasks 1–4. Record each jar's classification, state, and KMT reason.
Standard T5. Classification, state, and KMT reason must all be internally consistent.
Jar
Element
Classification
State at ~25 °C
KMT reason (which factor wins)
CER — Why Chemists Need One Naming System
Write a Claim–Evidence–Reasoning paragraph. Include the Law of Definite Proportions and at least 2 compounds from your tables.
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Tasks fully correct
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