Back to All Subjects

Chemistry For Engineers Simulations

A collection of interactive 3D visualizations and simulations to help you master concepts in chemistry for engineers.

Matter and Energy - Theory & Concepts

Fundamental concepts of matter, its classification, physical and chemical properties, and the laws of conservation governing energy and mass.

States of Matter

Observe how temperature affects particle motion and the arrangement of matter.

Low (Solid)High (Gas)

solid State Properties:

  • Fixed shape and volume.
  • Particles closely packed in a rigid lattice.
  • Low kinetic energy; particles vibrate in place.
T = 50 K (Relative)

Atomic Structure and Chemical Bonding - Theory & Concepts

Exploring the fundamental building blocks of matter, including the periodic table, chemical bonds, and molecular geometry.

VSEPR Geometry

Linear

2 Bonding Groups, 0 Lone Pairs. Bond Angle: 180°

ExampleCO₂
Click & Drag to Rotate
Central (A)
Bonded (X)
Lone Pair (E)

Stoichiometry - Theory & Concepts

Mastering the quantitative relationships in chemical reactions, including balancing equations, limiting reactants, and percent yield.

Stoichiometry & Limiting Reagents

Adjust the initial amounts of reactants to see which one limits the reaction and how much product is formed.

Initial Reactants (moles)

0 mol
0 mol
Hint: For every 1 mole of O₂, you need 2 moles of H₂.

Adjust inputs and click "Run Reaction"

Gases, Liquids, and Solids - Theory & Concepts

Understanding the states of matter and the forces governing their behavior, including gas laws, phase changes, and the properties of liquids and solids.

Ideal Gas Law

PV = nRT
Volume (V)22.4 L
Moles (n)1.0 mol
Temperature (T)273.1 K
Pressure (P)1.00 atm
*Visual representation only. Particle count and speed scaled for display.

Thermochemistry - Theory & Concepts

Exploring heat transfer, enthalpy, calorimetry, and the thermodynamics of chemical reactions.

Calorimetry Simulator (Quenching Steel)

Steel Properties (Hot)

500 g
200 °C

Water Properties (Cold)

1000 g
20 °C

Equilibrium Results

Final Temperature ($T_f$)20.00 °C
Heat Transferred ($q$)40500 J
−qsteel=qwater-q_{steel} = q_{water}
−(mscsΔTs)=mwcwΔTw-(m_{s}c_{s}\Delta T_{s}) = m_{w}c_{w}\Delta T_{w}
−(500)(0.450)(Tf−200)=(1000)(4.184)(Tf−20)-(500)(0.450)(T_f - 200) = (1000)(4.184)(T_f - 20)
Tf=20.00∘CT_f = 20.00 ^\circ\text{C}

Chemical Equilibrium - Theory & Concepts

Understanding reversible reactions, Le Chatelier's Principle, acid-base equilibria, and solubility product constants.

Le Chatelier's Principle Simulator

Haber Process (Ammonia Synthesis) - Exothermic (ΔH<0\Delta H < 0)

N2(g)N_2(g) + 3H2(g)3H_2(g)
⟶\longrightarrow⟵\longleftarrow
2NH3(g)2NH_3(g) + Heat

Relative Concentrations

Reactants
Products

Apply Stress (Concentration)

Apply Stress (Pressure/Temp)

System at Equilibrium

Select a stress factor to see how Le Chatelier&apos;s principle predicts the shift.

Electrochemistry - Theory & Concepts

Understanding oxidation-reduction reactions, galvanic cells, electrolysis, and the chemical basis of corrosion.

Galvanic Cell Simulator

Half-Cell 1

Half-Cell 2

Cathode (Reduction +)

Copper (Cu)

Cu2++2e−→Cu(s)Cu^{2+} + 2e^- \rightarrow Cu(s)
Ered∘=+0.34 VE^\circ_{red} = +0.34 \, V

Anode (Oxidation -)

Zinc (Zn)

Zn(s)→Zn2++2e−Zn(s) \rightarrow Zn^{2+} + 2e^-
Ered∘=−0.76 VE^\circ_{red} = -0.76 \, V
Ecell∘=Ecathode∘−Eanode∘E^\circ_{cell} = E^\circ_{cathode} - E^\circ_{anode}
Ecell∘=(+0.34)−(−0.76)E^\circ_{cell} = (+0.34) - (-0.76)
Standard Cell Potential
+1.10 V

Organic Chemistry and Fuels - Theory & Concepts

Fundamentals of organic chemistry with applications to fuels, combustion, and asphalt in engineering.

Hydrocarbon Structure Visualizer

Select a hydrocarbon family and adjust the number of carbon atoms to see the molecular formula and a basic structural representation.

Name:Ethane
Formula:C2H6
Carbon Backbone:
C - C