Atoms and Molecules worksheet with a word bank and fill-in-the-blank questions.

Let's solve this "Atoms and Molecules" quiz step by step using the word bank provided:

Word Bank:

- accelerate
- carbon
- electrons
- few
- molecules
- atomic
- different
- empty
- matter
- nuclear
- broken
- electricity
- everything
- middle
- protons

> Note: Not all terms are used. Some may be used more than once.

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Now, let’s go through each question one by one:

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1. If we break matter down enough, it is made of _few_ / _many_ things.

✔ Answer: few
→ Matter is made of a few basic building blocks (atoms). So, "few" fits best.

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2. Atoms cannot be ________ apart.

✔ Answer: broken
→ Atoms are the smallest units of matter that retain chemical properties. They can't be broken apart by ordinary means (chemically), though they can be split in nuclear reactions. But here, the context is likely general chemistry, so “broken” is correct.

> ✔ "broken"

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3. The nucleus is in the ________ of the atom.

✔ Answer: middle
→ The nucleus is located at the center or middle of the atom.

> ✔ "middle"

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4. The flow of neutrons / electrons from one atom to another is called electricity.

✔ Answer: electrons
→ Electricity is the flow of electrons, not neutrons (neutrons are neutral and don’t move easily).

> ✔ "electrons"

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5. Atoms are mostly ________ space.

✔ Answer: empty
→ Most of an atom is empty space — the electrons orbit far from the tiny nucleus.

> ✔ "empty"

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6. All ________ is made of atoms.

✔ Answer: matter
→ Everything physical (matter) is made of atoms.

> ✔ "matter"

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7. Atoms combine to form ________.

✔ Answer: molecules
→ When atoms bond together, they form molecules.

> ✔ "molecules"

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8. A scientist can separate water into hydrogen and oxygen gas by running ________ through it.

✔ Answer: electricity
→ This process is electrolysis, where electricity is passed through water to break it into hydrogen and oxygen.

> ✔ "electricity"

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9. Different atoms have ________ numbers of protons.

✔ Answer: different
→ Each element has a unique number of protons (atomic number). So, different atoms have different numbers of protons.

> ✔ "different"

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10. Elements are arranged in alphabetic / atomic number order on the periodic table.

✔ Answer: atomic
→ Elements are arranged in order of increasing atomic number (number of protons).

> ✔ "atomic"

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11. The atomic number represents the number of ________ in an atom.

✔ Answer: protons
→ Atomic number = number of protons.

> ✔ "protons"

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12. A(n) ________ physicist studies what’s inside of atoms.

✔ Answer: nuclear
→ A nuclear physicist studies the nucleus and subatomic particles.

> ✔ "nuclear"

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13. To smash an atom and separate the neutrons, you must aim an electron at the nucleus and ________ it really fast.

✔ Answer: accelerate
→ You need to accelerate the electron to high speeds to collide with the nucleus.

> ✔ "accelerate"

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14. It is said that everything / nothing in the universe is made of either matter or energy.

✔ Answer: everything
→ According to physics, everything in the universe is made of matter or energy.

> ✔ "everything"

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15. There are ________ atoms are in every living thing.

Wait — this sentence is awkwardly phrased:
> “There are ________ atoms are in every living thing.”

This seems like a typo. Probably meant:
> “There are ________ atoms in every living thing.”

But even then, it’s vague. However, looking at the word bank, the only term that makes sense in this context is carbon, because carbon is a key element in all living things.

So the intended answer is likely:

✔ carbon
→ Because carbon atoms are fundamental to life — organic chemistry is based on carbon.

> ✔ "carbon"

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Final Answers:

| # | Answer |
|---|---------------|
| 1 | few |
| 2 | broken |
| 3 | middle |
| 4 | electrons |
| 5 | empty |
| 6 | matter |
| 7 | molecules |
| 8 | electricity |
| 9 | different |
|10 | atomic |
|11 | protons |
|12 | nuclear |
|13 | accelerate |
|14 | everything |
|15 | carbon |

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Summary of Used Words:

- few
- broken
- middle
- electrons
- empty
- matter
- molecules
- electricity
- different
- atomic
- protons
- nuclear
- accelerate
- everything
- carbon

✔ Unused words: *accelerate* was used, *carbon* used, *atomic* used... Actually, all except "accelerate" and "carbon" were used? Wait — let’s check:

Wait — "accelerate" was used in #13, "carbon" in #15.
All terms in the word bank are used except:
- "few" → used in #1
- "broken" → #2
- "middle" → #3
- "electrons" → #4
- "empty" → #5
- "matter" → #6
- "molecules" → #7
- "electricity" → #8
- "different" → #9
- "atomic" → #10
- "protons" → #11
- "nuclear" → #12
- "accelerate" → #13
- "everything" → #14
- "carbon" → #15

✔ All 15 terms are used! (Note: "few" is used in #1 as a choice between "few/many", but it's still part of the word bank.)

But wait — the instruction says: *"Not all terms are used."* But in our case, all seem to be used. That might mean some are optional, but in this case, they all fit perfectly.

So final answers are complete.

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✔ Completed Quiz:

1. few
2. broken
3. middle
4. electrons
5. empty
6. matter
7. molecules
8. electricity
9. different
10. atomic
11. protons
12. nuclear
13. accelerate
14. everything
15. carbon

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Let me know if you'd like a printable version or explanation for any specific question!