PhysicsChapter 2: Thermal Expansion and Change of State
Pressure of A Gas
Heating a gas in a sealed can raises pressure because particles hit harder and more often.
Learning objectives
- Define and explain pressure of a gas.
- Apply pressure of a gas to a focused FBISE question.
- Check the answer for correct terms, evidence, working, and units.
Definition
Heating a gas in a sealed can raises pressure because particles hit harder and more often. Reducing volume at fixed temperature also raises pressure (more hits per second on a smaller wall).
Where / symbols
- Pressure Of A Gas
- Heating a gas in a sealed can raises pressure because particles hit harder and more often. Reducing volume at fixed temperature also raises pressure (more hits per second on a smaller wall).
Overview
Learn the idea, then use it:
Core Understanding
Heating a gas in a sealed can raises pressure because particles hit harder and more often. Reducing volume at fixed temperature also raises pressure (more hits per second on a smaller wall).
Examples heat raises pressure · smaller volume · collisions · PRESSURE OF A GAS: Heating a gas in a sealed can raises pressure because particles hit harder and more often. Reducing volume at fixed temp
Exam Application
State the correct term, connect it to the chapter rule or evidence, and use a clear example or calculation.
Examples Define first · Show the rule or evidence · Check units, labels, and conclusion
WHAT — PRESSURE OF A GAS
Heating a gas in a sealed can raises pressure because particles hit harder and more often. Reducing volume at fixed temperature also raises pressure (more hits per second on a smaller wall).
HOW — Use the idea
Identify what is given, select this topic's rule or evidence, apply it one step at a time, and check the result.
In simple words
Do not merge pressure of a gas with a neighbouring idea that uses a different definition, rule, or method.
Key points
- heat raises pressure
- smaller volume
- collisions
Exam preparation
Exam Focus
Quick revision
Revision Zone
Review the key facts, formulas and checks before you move on.Pressure of A Gas
Sticky Notes · Quick Revision
Core Idea
- Heating a gas in a sealed can raises pressure because particles hit harder and more often.
Key Points
- heat raises pressure
- smaller volume
- collisions
Simple Check
- Explain pressure of a gas in your own words and connect it to one chapter example.
How to Answer
- Define the idea, show the main rule or evidence, apply it, and check the final statement.
Common Mistake
- Do not merge pressure of a gas with a neighbouring idea that uses a different definition, rule, or method.
FBISE Exam Tip
- Use the exact term, show working where needed, and include units or labelled evidence.
60-second revision
- Heating a gas in a sealed can raises pressure because particles hit harder and more often.
- heat raises pressure
- smaller volume
- collisions
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