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SSI 3013INFORMATION AND COMMUNICATION IN
SCIENCE
STELLA SOFTWARE: REVERSIBLE REACTION
GROUP MEMBERS:NORLIYANA BINTI A. RESHID D20131063857AMIRAH HAKIMAH BINTI ABDUL RAHMAN D20131063867
INTRODUCTION…• A Representation of an object, a
system, or an idea in some form other than that of the entity itself.
• Scale models, prototype plantsModelling
• operation of a model, which is a representation of that system
• Example: Stella Simulation
APPLICATIONDesigning and analyzing manufacturing systems
Evaluating a new military weapons system or tactics
Designing and operating transportation facilities such as freeways, airports, subways, or ports
Evaluating designs for service organizations such as hospitals, post offices, or fast-food restaurants
Determining ordering policies for an inventory system and Analyzing financial or economic systems
ADVANTAGE SIMULATION
Give Student More Feeling For Reality In Some
Abstract Fields Of Learning
Student Will Be Active Rather Than
Passive in Class.
Saving The Cost Of Providing The
Necessary Apparatus in doing
experiments
DISADVANTAGE SIMULATION
disadvantage
Higher software cost
Cost about RM 3 K
School department
unaffordable to buy
Teacher still use tradisional way
Additional training required
Need good training to
use this software
Need time to expert
WHAT IS STELLA?stand for System Thinking for
Education and Research
offers a practical ways to dynamically visualize and
communicate how complex the system and ideas really
work.
used to stimulate a system over the time, jump the gap between theory and the real
world.
teach the students to look for relationship and interaction
and also it create a clear and best communication system
input and outputs to demonstrate the outcomes
many topics that can we build using STELLA
EXAMPLE OF USING STELLA?EXPERIMENT: REVERSIBLE REACTION• REVERSIBLE REACTION Is a process reversible chemical change• In the simulation: it make we see clearly the effect that reversibility plays in the
overall dynamics of the reaction by using H2 + I2 2HI
Graph Results of reversible reaction
Simulation 1: combination rate constant at low and decomposition rate constant at high (except at high concentration of reactant and low product)
Simulation 3: the constant rate of combination and decomposition at low
Simulation 4: the constant rate of combination and decomposition at high
Simulation 2: the constant rate of combination at high and rate of decomposition at low
EXAMPLE OF USING STELLA:Type of graph results in reversible reaction
GRAPH 1:-The forward reaction has its maximum rate at the beginning of the reaction and the rate decreases as the reaction proceeds. The rate decreases as the reaction proceeds. when the two rates become equal, the system is at equilibrium.
GRAPH 2:-The reaction proceeds, the reactants (I2 CONCENTRATIONS) get consumed, and the products (HI CONCENTRATION) are created. At some point, the products degrade back to their reactant form at the same rate as they are being formed, reaching an equilibrium between formation and destruction.
GRAPH 3:-The equilibrium between a liquid and its vapor, the rate of vaporization is equal to the rate of condensation. In the equilibrium of a saturated solution with undissolved solute, the rate of dissolution is equal to the rate of precipitation. In the equilibrium of a weak acid with its ions, the rate of dissociation is equal to the rate of recombination.