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Biblioteka

Digital Escape Room 🧪 The Great Hillgrove Lab Lockdown BCA

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Posljednje ažuriranje 5 months ago
11
Napomena autora:
Intro / Scenario

Before you start, take a look at this for a quick BCA refresher.

Lock 2 – BCA Table Reactor
1
1
1
Obavezno
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Lock 3 – Stoichiometry Challenge
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1
1
Obavezno
1
Lock 4 – Percent Yield Vault
Obavezno
1
⚗️ FINAL LOCK: Containment Door Override – The Last Reaction
Obavezno
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Congratulations! Good job!
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Can your students escape the Hillgrove Lab? In this high-energy stoichiometry performance task, they’ll balance equations, calculate yield, and reason backward through BCA tables to power up the reactor and open the doors!

Hillgrove Lab Lockdown: A Stoichiometry Escape Room Performance Task

In this immersive performance task, students become chemists trapped inside the Hillgrove Laboratory after a reactor malfunction. To escape, they must apply their knowledge of stoichiometry, BCA (Before-Change-After) tables, and conservation of matter to solve a sequence of “locks.” Each challenge integrates balancing equations, identifying limiting reactants, and calculating theoretical and percent yield.

The final lock requires students to work backward from a desired product to determine the exact quantities of reactants needed to reach 100% reactor efficiency—demonstrating full mastery of quantitative relationships in chemical reactions.

This task aligns with GSE Chemistry Standard SC3, emphasizing mathematical reasoning, modeling, and real-world applications. Designed for use in Formative SSO, it offers instant feedback and collaborative engagement while making complex chemistry concepts exciting and authentic.

test_tube emoji Hillgrove Lab Lockdown: The Final Reaction Challenge

Chemists, we’ve got a problem! The Hillgrove Lab reactor has stabilized, but the containment doors are still sealed. To escape, you must use your knowledge of stoichiometry, BCA tables, and limiting reactants to solve a series of chemistry “locks.” Each correct calculation powers the lab back online — and the final challenge requires you to work backward from the product to find exactly how much of each reactant is needed.
Can you balance the equations, restore full efficiency, and lift the doors before time runs out?

Pitanje 1
1.

The chemical reactions in the balancing chamber are unstable.

one emoji __ N₂ + __ H₂ → __ NH₃

one emoji N₂ + H₂ → NH₃

Pitanje 2
2.

The chemical reactions in the balancing chamber are unstable.

two emoji __ Al + __ O₂ → __ Al₂O₃


two emoji Al + O₂ → Al₂O₃

Pitanje 3
3.

The chemical reactions in the balancing chamber are unstable.

three emoji __ Fe₂O₃ + __ CO → __ Fe + __ CO₂


three emoji Fe₂O₃ + CO → Fe + CO₂

Pitanje 4
4.

Balance each one to generate the override code (the sum of all coefficients in each reaction). Add the coefficients of each balanced equation above separately. Each sum corresponds to the code.

Enter your 3-digit code.

Example: If the sums of each reaction are:

one emoji 3
two emoji 9
three emoji 4

then your code would be 3-9-4 → enter 394

Pitanje 5
5.

Fill in the missing “Before” amount of H₂.

Reaction:
2H₂ + O₂ → 2H₂O

Step

H₂ (mol)

O₂ (mol)

H₂O (mol)

Before

question emoji

3.0

0

Change

–4x

–2x

+4x

After

0

1.0

4.0

Pitanje 6
6.

Determine the missing “Change” value for N₂.

Reaction:
N₂ + 3H₂ → 2NH₃

Step

N₂ (mol)

H₂ (mol)

NH₃ (mol)

Before

2.0

6.0

0

Change

question emoji

–3x

+2x

After

1.0

0

4.0

Pitanje 7
7.

Determine the missing “After” value for Al.

Reaction:
2Al + 3Cl₂ → 2AlCl₃

Step

Al (mol)

Cl₂ (mol)

AlCl₃ (mol)

Before

3.0

5.0

0

Change

–3.0x

–4.5x

+3.0x

After

question emoji

0.5

3.0

Pitanje 8
8.

Use the first letter of the limiting reactant in each of the problems above to decode the numeric password. Use the Polybius key on the lab wall to decode the emergency phrase.

1

2

3

4

5

1

A

B

C

D

E

2

F

G

H

I/J

K

3

L

M

N

O

P

4

Q

R

S

T

U

5

V

W

X

Y

Z

To encode, write the row and column numbers.

example: C O D E → 13-34-14-15

Start up the reactor: --

Pitanje 9
9.

warning emoji System Alert: Reactor output below optimal range.

  • large_blue_circle emoji Maximum Calibrated Output: 25.4 g

  • orange_circle emoji Current Reactor Output: 21.6 g


The lab’s sodium chloride (NaCl) production is operating at partial efficiency.

What is the current efficiency yield?


To fully reboot the system, you must determine how much more product is required to reach 100% efficiency.

Proceed with caution — overcompensating may destabilize the reaction.

Pitanje 10
10.

test_tube emoji FINAL LOCK: Containment Door Override


compass emoji Containment Door Override — Product Generation Required

warning emoji Emergency Directive:

Reactor power stabilized at 100%, but the containment doors remain sealed.

To release the doors, the system requires exactly 1.81×1024 particles of the sodium chloride product.

Your task: Work backward to determine how much of each reactant must be supplied to generate the target product amount of

Input precise values (round to two decimals) (no units, just numbers), or the door will remain locked!

Step

___Na

___Cl₂

___NaCl

Before

Change

– x

– x

+ x

After

Pitanje 11
11.

brain emoji Reflect: In your own words, explain what this escape taught you about how limiting reactants and yield affect real chemical systems.

In this final calibration, you worked backward to find the exact reactant amounts needed to reach 100% efficiency. Explain how the ratio of reactants and products demonstrates the Law of Conservation of Matter.