UPCAT Chemistry — Gas Laws & ThermochemistryConcept Map
UPCAT candidates who build concept maps early in review tend to retain Gas Laws & Thermochemistry better through the long stretch to exam day. The Gas Laws & Thermochemistry concept map on this page shows the sub-topics University of the Philippines includes most often in UPCAT Chemistry, and how they branch off the central idea.
Exam context
The University of the Philippines College Admission Test is conducted by University of the Philippines and is scheduled for Mid-2026 (announced by UP Admissions). The Chemistry subtest is marked as "Core" in the official pattern, and Gas Laws & Thermochemistry appears in position 6th of 7 in the UPCAT Chemistry review rotation. Passing mark: UPG ≤ 2.2 typical. Recent UPCAT 2026 papers have drawn roughly 20 questions from this subject.
Gas Laws & Thermochemistry - Concept map
Central Concept
Gas Laws and Thermochemistry
Related Concepts
Concept
Gas Laws
Sub Concepts
- Boyle's Law - pressure-volume relationship
- Charles's Law - volume-temperature relationship
- Gay-Lussac's Law - pressure-temperature relationship
- Combined Gas Law - integration of all relationships
- Ideal Gas Law - comprehensive gas equation
- Avogadro's Law - volume-moles relationship
Relationship To Central
Primary component describing gas behavior under different conditions
Concept
Gas Properties
Sub Concepts
- Pressure - force per unit area
- Volume - space occupied by gas
- Temperature - measure of kinetic energy
- Amount of gas - measured in moles
- Standard conditions - STP reference point
Relationship To Central
Physical characteristics that define gas behavior
Concept
Mathematical Relationships
Sub Concepts
- Direct proportionality - variables increase together
- Inverse proportionality - one increases as other decreases
- Gas constant R - universal proportionality factor
- Kelvin temperature scale - absolute temperature
- Molar volume at STP - 22.4 L per mole
Relationship To Central
Quantitative expressions of gas behavior
Concept
Real-World Applications
Sub Concepts
- Tire pressure monitoring
- Weather balloon calculations
- Scuba diving safety
- Industrial gas storage
- Respiratory system function
Relationship To Central
Practical uses of gas law principles
Concept
Related Properties
Sub Concepts
- Viscosity - resistance to flow
- Vapor pressure - evaporation tendency
- Surface tension - intermolecular forces
- Osmosis - membrane transport
Relationship To Central
Additional physical properties affecting matter behavior
Concept Connections
To
Combined Gas Law
From
Boyle's Law
Strength
strong
Relationship
Boyle's Law is a component of the Combined Gas Law when temperature is held constant
To
Combined Gas Law
From
Charles's Law
Strength
strong
Relationship
Charles's Law is a component of the Combined Gas Law when pressure is held constant
To
Combined Gas Law
From
Gay-Lussac's Law
Strength
strong
Relationship
Gay-Lussac's Law is a component of the Combined Gas Law when volume is held constant
To
Ideal Gas Law
From
Combined Gas Law
Strength
strong
Relationship
Both describe gas behavior but Ideal Gas Law includes amount of gas (moles)
To
Kelvin Scale
From
Temperature
Strength
strong
Relationship
Temperature must be expressed in Kelvin for all gas law calculations
To
Avogadro's Law
From
Standard Conditions
Strength
strong
Relationship
STP defines the conditions where 1 mole of gas occupies 22.4 L
To
Volume
From
Pressure
Strength
strong
Relationship
Inversely proportional in Boyle's Law at constant temperature
To
Temperature
From
Volume
Strength
strong
Relationship
Directly proportional in Charles's Law at constant pressure
To
Temperature
From
Pressure
Strength
strong
Relationship
Directly proportional in Gay-Lussac's Law at constant volume
To
Real-World Applications
From
Gas Laws
Strength
moderate
Relationship
Gas laws explain and predict behavior in practical situations
To
Gas Constant R
From
Ideal Gas Law
Strength
strong
Relationship
R is the universal gas constant that relates all gas properties
To
Gas Laws
From
Osmosis
Strength
weak
Relationship
Both involve molecular movement and pressure relationships
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