Texas TEKS5th GradeScience

5.6D— Identifying Tiny Particles in Matter

Matter and energy · b.6: Matter and energy. The student knows that matter has measurable physical properties that determine how matter is identified, classified, changed, and used. The student is expected to:

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What this standard means: TEKS §112.7.6.D asks fifth graders to illustrate how matter is made of tiny particles too small to see. This intervention opens by having students draw or describe what they think is inside a blown-up balloon, then checks that thinking against evidence: air pushing out a balloon's sides, popcorn smell traveling between rooms, and sugar's sweetness staying in water even after the sugar seems to vanish. Multiple-choice questions ask students to correct the claim that an empty-looking balloon has nothing inside it and to identify which example proves matter can be present without being visible. With repetition, students learn to infer that unseen matter is there because of what it does, not because they can see it.

What the standard says, word for word · §112.7.b.6.D

illustrate how matter is made up of particles that are too small to be seen such as air in a balloon
Read it at the source: Texas Education Agency (TEA)

What’s inside

What you get, and who it’s for

Everything below is measured from the actual lesson and the actual file. Nothing here is an estimate.

Time to run
About 25 minutes. 10 min lesson, then 15 min of practice.
In the download
8 printable pages: the full lesson, the worked examples, the visual models, and 12 practice questions with space to work. An educator answer key is included at the end, so the student pages come first and it is still ready to hand out. The lesson’s worked examples do show their solutions, because that is how they teach.
Question set
The download carries all 12 questions. The page shows 12 of them as a sample.
Question format
Every question is multiple choice. Students show their work on the page.
Assumed before this

Students who are shaky on these will struggle with 5.6D. Worth a quick check first.

  • §112.6.b.6.A(Grade 4) Students should already be able to classify and describe matter using observable physical properties, including temperature, mass, magnetism, relative density, and physical state, which gives them a foundation for reasoning about particles too small to see.
Dates
Published August 6, 2026. Last updated August 14, 2026.

The sample intervention

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5.6D

Tiny Pieces of Matter: Guided Notes

Illustrate how matter is made of tiny particles that are too small to see.

Before you read: in your notes space, draw or describe what YOU think is inside a blown-up balloon. Then read the passages and examples below to learn how matter is made of tiny particles that are too small to see. As you read, check whether your drawing matches the big idea, and use the notes spaces to record key ideas.

Matter is all around you. Some matter is easy to see, like a basketball or a balloon. Some matter is hard to see, because its pieces are so tiny. These tiny pieces are too small for your eyes to see, but they are still there.
Can you see it? It is still matter.

Both groups are matter. Being too small to see does not mean something is gone.

Think about a balloon. Before you fill it, it looks empty. It is not really empty. Air is inside it, and air is matter. When air goes into the balloon, it pushes the sides out. That shows something is there, even when you cannot see it. Look back at your drawing — does it show something inside the balloon?
Smells can move too. If popcorn is cooking in another room, you may smell it before you see it. Tiny pieces from the smell travel through the air. They can move from place to place, even though you cannot see them.
Sugar can seem to disappear in water, but the sweetness stays. The sugar is still there, just spread out so well that you cannot see it anymore. This is another clue that matter can be made of tiny pieces.
Three clues that matter is made of tiny pieces
What you noticeWhat it tells us
BalloonIt puffs up and pushes the sides outAir is in there and takes up space
Popcorn smellYou smell it from another roomTiny pieces travel through the air
Sugar in waterIt vanishes but the water tastes sweetIt is still there, just spread out

You cannot see the pieces in any of these clues. You can only see what they do.

Today’s big idea is this: matter is made of tiny particles that are too small to see. We can know they are there by what they do, such as filling a balloon, carrying a smell, or changing water taste.
Tiny particles of matter
solidBasketball (you can see it)
gasAir in a balloon (too small to see)
mixtureSugar in water (still there)

All three are matter. The particles are packed close, spread far apart, or mixed in - but they are always there.

Worked exampleA balloon looks empty, but air inside it takes up space.
Worked examplePopcorn smell can travel from one room to another room.
Worked exampleSugar seems to vanish in water, but the sweet taste shows it is still there.

Practice questions

  1. 1

    Which statement best matches the big idea of this lesson?

    • Only large objects are matter.
    • Matter is made of tiny particles that are too small to see.
    • Matter disappears when we cannot see it.
    • Only water is matter.
  2. 2

    A student says, 'A balloon looks empty, so there is nothing inside.' What is wrong with that idea?

    • The balloon is filled with water.
    • The balloon only has color inside it.
    • The balloon is truly empty.
    • Air is inside the balloon, even though we cannot see it.
  3. 3

    Which example shows matter that is hard to see because it is made of tiny pieces?

    • A book on a shelf
    • A desk in the classroom
    • A basketball sitting on the floor
    • Popcorn smell coming from another room
  4. 4

    A teacher writes these notes: Balloon: air goes in and pushes the sides out. Which idea does this show?

    • Air is inside the balloon and takes up space.
    • The balloon is made only of smell.
    • The balloon has no matter inside it.
    • The balloon gets bigger by itself.
  5. 5

    Which choice best explains why you can smell perfume from another room?

    • The other room becomes brighter.
    • Tiny pieces from the smell travel through the air.
    • The perfume turns into music.
    • The perfume only works in silence.
  6. 6

    Which statement compares the balloon and the popcorn smell correctly?

    • The balloon shows air filling space, and the smell shows tiny pieces moving.
    • The balloon shows sound moving, and the smell shows light moving.
    • Both examples show things that are not matter.
    • Both examples show matter that is easy to see.
  7. 7

    A student says, 'Sugar disappears in water, so it is gone.' What is the best correction?

    • The sugar is gone forever.
    • The water removes all matter.
    • The sugar changes into air.
    • The sugar is still there, but spread out.
  8. 8

    Which example best matches the idea that matter can be hard to see?

    • Sugar stirred into water
    • A chair next to a desk
    • A baseball glove on a table
    • A crayon in a box
  9. 9

    A student says, 'If I cannot see it, it cannot be matter.' Why is that statement wrong?

    • Because matter always looks colorful.
    • Because all matter is made of glass.
    • Because matter can be invisible and still be there.
    • Because only light can be seen.
  10. 10

    A student inflates a basketball with air. Which clue shows that matter is inside the ball and taking up space?

    • The basketball gets lighter.
    • The basketball changes shape and becomes bigger.
    • The basketball turns a different color.
    • The basketball starts to smell like perfume.
  11. 11

    A teacher says, 'Think about what a balloon does when air goes in.' Which answer best explains why this helps us learn about matter?

    • It shows air is not matter.
    • It shows balloons are living things.
    • It shows only solid things are matter.
    • It shows matter can be too small to see, but still take up space.
  12. 12

    Which choice is the best summary of the three lesson clues: balloon, smell, and sugar in water?

    • Only big objects are matter.
    • Matter can be too small to see, but it is still there.
    • Smells and sugar are not connected to matter.
    • Matter always disappears when it changes form.

Part of the question set is shown. Generate the whole intervention, freshly themed and with an answer key, for your own class in the product.

Watch for this

Common mistakes

Seeing is believing mistake: Students often think matter must be visible to count as matter, so they say a balloon is empty, a smell is “nothing,” or sugar is gone when it disappears in water. This misses the lesson idea that matter can be made of tiny particles too small to see, and we know they are there by what they do, like filling space, carrying a smell, or still affecting taste.

Vocabulary

Key terms

matter
Matter is all around you, and it takes up space.
particles
Particles are tiny pieces of matter that are too small to see.
air
Air is matter that can be inside a balloon and push the sides out.
smell
A smell can move through the air even when you cannot see it.

In the classroom

How to use this intervention

Use the 10-minute lesson time for a brief whole-class warm-up and guided read-aloud of the passages, pausing to model the first few notes and help students connect each example to the big idea. Use the 15-minute practice time for independent work or a small-group check-in, so students can answer the questions and revisit the balloon, smell, and sugar clues with support as needed.

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Questions educators ask

Educator FAQ

What grade is this worksheet for?

It is for Grade 5.

Which TEKS standard does this lesson align to?

It aligns to TEKS §112.7.b.6.D, which covers illustrating how matter is made up of particles too small to be seen.

Is an answer key included?

Yes, the free worksheet PDF includes all questions with a complete answer key.