Bill Nye Phases of Matter Worksheet PDF Video Guide Movie ... - Free Printable

Let’s go through each question one by one and figure out the correct answers based on basic science about matter and its phases.

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Question 1:
> Everything that you can ____________ is matter.
Options: Think of, Hold in your hand, Touch, Discuss

Matter is anything that has mass and takes up space — so it’s physical stuff you can interact with physically. “Think of” or “Discuss” are mental actions — not all things we think of are real (like unicorns). But if you can touch it, it’s likely matter. Even air is matter, though you can’t always hold it — but you *can* feel/touch wind sometimes. The best answer here is Touch, because matter is defined as something you can physically sense or measure.

✔ Correct Answer: Touch

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Question 2:
> Which of these is NOT a phase of matter?
Options: Atom, Solid, Liquid, Gas

Solid, liquid, and gas are the three main states (phases) of matter. An atom is a tiny particle that makes up matter — it’s not a phase itself. So atom is the odd one out.

✔ Correct Answer: Atom

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Question 3:
> Atoms in solids ______________ than in liquids.
Options: Move more slowly, Move more quickly, Are less massive, Are more massive

In solids, atoms vibrate in place — they don’t flow around like in liquids. That means they move more slowly. Mass doesn’t change between phases — same atoms, just arranged differently.

✔ Correct Answer: Move more slowly

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Question 4:
> When liquid molecules gain more energy, they change ________ and become a gas
Options: State, Motion, Color

When you add heat (energy), molecules move faster and spread out — this changes their state from liquid to gas. Their motion increases too, but the key word here is “change ___ and become a gas” — that’s describing a state change. Color usually doesn’t change during phase changes.

✔ Correct Answer: State

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Question 5:
> A freezer works by ...
Options: Changing solids into liquids, Changing liquids into gasses, Pumping energy from the room into the freezer, Pumping energy from the freezer into the room

Freezers cool things by removing heat (thermal energy) from inside and releasing it outside — so they pump energy from the freezer into the room. This is how refrigerators and freezers work — they’re heat pumps.

✔ Correct Answer: Pumping energy from the freezer into the room

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Question 6:
> A change in phase ALWAYS requires...
Options: A change in color, A change in position, A change in molecular structure, A change in energy

Phase changes (melting, freezing, boiling, etc.) happen when energy is added or removed — even though the molecules themselves don’t break apart or change chemically. No new substances form — just different arrangements. So yes, a change in energy is always required.

✔ Correct Answer: A change in energy

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Final Answer:
1) Touch
2) Atom
3) Move more slowly
4) State
5) Pumping energy from the freezer into the room
6) A change in energy