Unit 7: How does the Body Regulate pH?
Neutralization Reaction Simulation

Neutralization Reaction Simulation

Choose an acid and a base, add particles to the beaker, and watch neutralization happen only when hydrogen ions and hydroxide ions collide.

pH
7.0
Neutral solution
Excess ions
0
H+ and OH- are balanced
Water formed
0
Only forms after H+ and OH- collide
Acid
H+
Base
OH-
0
7
14
Le Châtelier's Principle: Ammonia Equilibrium

Le Châtelier's Principle Simulation

Production of Ammonia in the Haber Process

N2(g) + 3H2(g) ⇌ 2NH3(g) + heat
Forward reaction is exothermic. Heat acts like a product.

Change the System

Lower Normal Higher
Low Volume
High Pressure Normal High Volume
Low Pressure

Particle Key

N2: two blue nitrogen atoms bonded together
H2: two white hydrogen atoms bonded together
NH3: one blue nitrogen atom bonded to three white hydrogen atoms
Particle-Level Equilibrium System
Nitrogen atom
Hydrogen atom

System Data

Substance Amount
N2 8
H2 24
NH3 10
N2 19%
H2 57%
NH3 24%

Explanation

The system begins at equilibrium. Change concentration, temperature, or pressure to see how the equilibrium shifts.
N2 + 3H2 ⇌ 2NH3 + heat

DCI Videos

Some of the Videos cover topics that may not be directly assessed in the standards (DCI's) but are important for lab activities, SEP's or CCC's or are a review of content previously learned in the K-12 Learning progression.

NYSSLS Curriculum