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Gas Laws: Pressure, Volume & Temperature

Tenth graders explore the gas laws — starting with Boyle’s Law, which shows that squeezing a gas into a smaller volume raises its pressure — and learn how pressure, volume, and temperature are connected.

Grade 10Gases55 minutes1 class period5E ModelExplicit teaching4 StandardsNGSS
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Lesson at a Glance

Everything you need before the bell rings

Learning Objectives

Students will be able to…

  • ✓State Boyle’s Law.
  • ✓Explain the pressure-volume relationship.
  • ✓Predict how a gas responds.
  • ✓Connect to particle motion.
Essential Question

Push a plunger on a sealed syringe and it gets harder to press — the trapped gas pushes back. Why does squeezing a gas raise its pressure? The gas laws explain it.

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Lesson Phases
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Vocabulary Terms
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Standards Aligned
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Interactive Task
Explore · Interactive

Boyle’s Law

Project this and change the volume. Watch the pressure rise as you squeeze the gas — their product stays constant!

💨 Squeeze the gas — watch the pressure!Try it
Volume: 4 L

The Lesson · 5E Instructional Model (Engage · Explore · Explain · Elaborate · Evaluate)

55 minutes, five moves

Tap any phase to open the teacher moves and student actions.

1

Engage — Pushing Back

5 min

Press a sealed syringe and it pushes back — why?

👩‍🏫 Teacher Moves

  • Demo a sealed syringe.
  • Ask why it resists.
  • Pose the question.

🎒 Student Actions

  • Feel the push.
  • Wonder why.
  • Predict the idea.
2

Explore — Explore Boyle’s Law

12 min

Students investigate.

👩‍🏫 Teacher Moves

  • Send students to Boyle’s Law.
  • Change the volume.
  • Read the pressure.

🎒 Student Actions

  • Change volume.
  • Read pressure.
  • Note the product.
3

Explain — Pressure & Volume

13 min

Students explain.

👩‍🏫 Teacher Moves

  • Explain the inverse relationship.
  • Connect to particle collisions.
  • State P × V = constant.

🎒 Student Actions

  • Explain inverse.
  • Connect particles.
  • State the law.
4

Elaborate — Other Gas Laws

15 min

Students elaborate.

👩‍🏫 Teacher Moves

  • Introduce temperature’s effect.
  • Explain Charles’s Law.
  • Connect the variables.

🎒 Student Actions

  • Add temperature.
  • Explain Charles.
  • Connect them.
5

Evaluate — Evaluate

5 min

Students conclude.

👩‍🏫 Teacher Moves

  • Explain Boyle’s Law.
  • Predict a gas change.
  • Hand out the exit ticket.

🎒 Student Actions

  • Explain it.
  • Predict it.
  • Complete the exit ticket.
Standards Alignment

Built to the standards you report on

Aligned to the Next Generation Science Standards (High School Physical Science / Chemistry).

NGSS
HS-PS1-3

Plan investigations to gather evidence about bulk properties from particle forces.

NGSS
HS-PS3-2

Model how energy is related to motion of particles.

NGSS
HS-PS1-4

Explain energy changes in matter.

NGSS
SEP-3

Planning and carrying out investigations.

Differentiation

One lesson, every learner

Multilingual Learners

ELL / EMERGING READERS
  • Pressure-volume diagram.
  • Sentence frame: “Smaller volume → ___ pressure.”
  • Demo with a syringe.

Support & Access

IEP / 504
  • Use the syringe demo.
  • Focus on inverse relationship.
  • Read the tool together.

Stretch & Extend

GIFTED / EARLY FINISHERS
  • Solve Boyle’s Law problems.
  • Explore Charles’s Law.
  • Introduce the ideal gas law.
Materials

What to gather

  • 📽️Projector / board
  • 💉Sealed syringes
  • 💻Boyle’s Law
  • 🧮Calculators
  • ✏️Pencils
  • 🎫Exit-ticket slips
Vocabulary

Key terms — hover for a quick definition

gas lawa rule relating gas propertiespressureforce per area from particle collisionsvolumethe space a gas fillsBoyle’s LawP and V are inversely relatedCharles’s LawV and T are directly relatedinverse relationshipone goes up as the other goes downparticle collisiona gas particle hitting a walltemperaturea measure of particle motion
Evaluate

Exit Ticket

Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.

QUESTION 1
What is Boyle’s Law?
At constant temperature, the pressure and volume of a gas are inversely related (P × V is constant).
QUESTION 2
If you squeeze a gas into half the volume, what happens to its pressure?
It doubles.
QUESTION 3
Why does squeezing a gas raise its pressure?
The particles hit the walls more often in the smaller space.

Elaborate: Charles’s Law.

Have students explore how heating a gas at constant pressure increases its volume (Charles’s Law) — explaining why a balloon expands in the sun. A printable gas-laws sheet is in the Science library.

Study · Flashcards

Study the key terms

Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.

🃏 Gas LawsFlip
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Term
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Meaning
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Practice · Quiz

Check your understanding

A quick self-check with instant feedback, drawn from this lesson’s key terms.

📝 Gas LawsQuiz
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Question 1
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Practice · Worksheet

Printable worksheet

A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.

🖨️ Gas LawsPrint
Name: ________________________
Date: ____________

Part A · Write the word that matches each meaning

Word bank: Boyle’s Law, Charles’s Law, gas law, inverse relationship, particle collision, pressure, temperature, volume
  1. P and V are inversely related
  2. force per area from particle collisions
  3. a rule relating gas properties
  4. a measure of particle motion
  5. the space a gas fills
  6. V and T are directly related
  7. one goes up as the other goes down
  8. a gas particle hitting a wall

Part B · Show what you learned

  1. What is Boyle’s Law?
  2. If you squeeze a gas into half the volume, what happens to its pressure?
  3. Why does squeezing a gas raise its pressure?
Answer key — Part A: 1) Boyle’s Law · 2) pressure · 3) gas law · 4) temperature · 5) volume · 6) Charles’s Law · 7) inverse relationship · 8) particle collision
Part B: 1) At constant temperature, the pressure and volume of a gas are inversely related (P × V is constant). 2) It doubles. 3) The particles hit the walls more often in the smaller space.