1. define atom:
2. what does the greek word atomos mean?
3. what three subatomic particles make up atoms?
4. complete the following chart:

| subatomic particle | charge | location in atom |
|---|---|---|
| protons | | |
| neutrons | | |
| electrons | | |
5. define nucleus:
6. define electron:
7. label from the following diagram:
diagram of atom with labeled parts a, b, c
a. ______
b. ______
c. ______
8. atoms have ______ numbers of ______ and ______, and are electrically ______ because the ______ charges ______ out.

Question

1. define atom:
2. what does the greek word atomos mean?
3. what three subatomic particles make up atoms?
4. complete the following chart:

| subatomic particle | charge | location in atom |
   |---|---|---|
   | protons |  |  |
   | neutrons |  |  |
   | electrons |  |  |
5. define nucleus:
6. define electron:
7. label from the following diagram:
   diagram of atom with labeled parts a, b, c
   a. ______
   b. ______
   c. ______
8. atoms have ______ numbers of ______ and ______, and are electrically ______ because the ______ charges ______ out.

Accepted Answer

### Question 2
# Brief Explanations:
The Greek word "atomos" means "indivisible" (in the context of the ancient concept of the atom, as it was thought to be the smallest, uncuttable unit of matter).
# Answer:
indivisible

### Question 3
# Brief Explanations:
Atoms are composed of three main subatomic particles: protons, neutrons, and electrons. Protons are positively charged, neutrons are neutral, and electrons are negatively charged.
# Answer:
Protons, neutrons, and electrons

### Question 4
# Brief Explanations:
- **Protons**: Have a positive charge ($+1$) and are located in the nucleus of the atom.
- **Neutrons**: Have no charge (neutral) and are also located in the nucleus.
- **Electrons**: Have a negative charge ($-1$) and are located in the electron cloud (or energy levels) surrounding the nucleus.

We fill the table with this information.
# Answer:
| Subatomic Particle | Charge       | Location in Atom       |
|--------------------|--------------|------------------------|
| Protons            | Positive ($+1$) | Nucleus                |
| Neutrons           | Neutral (0)  | Nucleus                |
| Electrons          | Negative ($-1$) | Electron cloud (around nucleus) |

### Question 5
# Brief Explanations:
In the context of an atom, the nucleus is the dense, central part of the atom that contains protons and neutrons. (Note: The original answer refers to a cell nucleus, which is a different context. For an atom, the nucleus is the core with protons and neutrons.)
# Answer:
The dense, central region of an atom that contains protons and neutrons.

### Question 7
# Brief Explanations:
- **a**: The particles labeled "a" are the negatively charged particles orbiting the nucleus, so they are electrons.
- **b**: The particles in the nucleus with no charge (white circles, assuming the black ones are protons) are neutrons.
- **c**: The positively charged particles in the nucleus (black circles) are protons.

We match the labels to these particles.
# Answer:
a. Electron
b. Neutron
c. Proton

### Question 8
# Brief Explanations:
Atoms have equal numbers of protons (positive charge) and electrons (negative charge). Since the positive and negative charges balance (cancel) each other, atoms are electrically neutral.
So the blanks are filled as: equal, protons, electrons, neutral, opposite, cancel.
# Answer:
Atoms have \underline{equal} numbers of \underline{protons} and \underline{electrons}, and are electrically \underline{neutral} because the \underline{opposite} charges \underline{cancel} out.

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